MAGNETIC POWDER CORES - MH&W International Corp. · MAGNETIC POWDER CORES TECHNICAL DATA Comparison of Core materials Perm. ( ) Bs (G) Core Loss DC Bias Relative Cost Temp. Stability

Innovative Technological AdvancementsMove forward with Chang Sung Corporation. We are one of the mainsuppliers of cutting edge products to all our customers at theforefront of the next generation in energy solutions.

www.changsung.comVer.13

MAGNETIC POWDER CORES

01 ::: Chang Sung Corporation

We deliver excellence in performance by always keeping our customers’ specific needs in mind.

Chang Sung Corporation has been producing magnetic powder cores with sophisticated technologicalexpertise in manufacturing metal powders since 1980. We have steadfastly made investments into our

research and development program as well as our manufacturing facilities to increase our range ofproducts and production capacity in line with the growing needs of our customers.

This has enabled Chang Sung Corporation to become a leading global player in producing softmagnetic powder cores. Today, we are well positioned to offer reliable product quality at competitive

prices to meet the diverse requirements of all our clients.

Moving forward with Chang Sung Corporationto the Next Generation in Energy Solutions.

CSC soft magneticpowder cores are

at the forefront ofadvanced industries

Magnetic Powder Cores ::: 02


What arePowder Cores?

Core MaterialsMPP Core : Ni-Fe-Mo alloyHigh Flux Core : Fe-Ni alloySendust Core : Fe-Si-Al alloyMega Flux Core : Fe-Si alloy

Core ShapesToroids : From 3.5mm to 165mm OD Special :Ellipse, Block, Cylinder

Washer, ER, U, EE, EER, EQ

PermeabilityMPP : 26, 60, 125, 147, 160, 173, 200μHigh Flux : 26, 60, 125, 147, 160μSendust : 26, 60, 75, 90, 125μMega Flux : 26, 50, 60, 75, 90μ

Core FinishesFinish : Epoxy, Parylene-C, Plastic CaseColor - MPP : Gray

- High Flux : Khaki- Sendust : Black- Mega Flux : Dark Brown

Break-Down Voltage : 500V min.

MAGNETIC POWDER CORES PRODUCT LINE - UP

Product Summary

Cross Sectional View

CeramicLayer

Magnetic Powder

Powder cores are distributed air gap cores made from ferrous alloypowders for low losses at high frequencies. Small air gaps distributedevenly throughout the cores increase the amount of Direct Current (DC)that can be passed through the winding before core saturation occurs. Molybdenum Permalloy Powder (MPP) cores are ideal for low loss inductorssuch as switching regulators and noise filters.High Flux, Sendust and Mega Flux cores are the preferred choices forPower Factor Correction (PFC), switching regulator inductors, in-line noisefilters, pulse and flyback transformers and many other applicationsrequiring low losses at high frequencies.

Chang Sung Corporation’sadvanced technology enablesus to fulfill the diverse needsof our clients for soft magneticpowder cores.


Chang Sung Corporation manufactures four types of soft magnetic powder cores including the Molybdenum Permalloy(MPP), High Flux, Sendust and Mega Flux , which are mainly used for inductors and transformers requiring low losses andinductance stability under high DC bias conditions. A fully standardized production management system under strictquality control of the raw materials (nickel, iron, molybdenum, aluminum and silicon) enables CSC to guarantee consistentquality and thus build greater confidence in our company’s product line.

MPP Ni-Fe-Mo alloy powder cores are made from alloy powders ofnickel, iron and molybdenum.MPP cores exhibit a highly sustainable stability in temperature and inductance under high DCmagnetization or high DC Bias conditions. They offer the highest permeability among ourmaterials and the lowest core loss compared to any other core material. MPP cores are alsoconsidered to be a premium material for direct current output inductors for SMPS includinghigh Q filters, loading coils and EMI/RFI filters. Finished toroid cores are coated with a grayepoxy to provide dielectric protection and added physical strength.

HIGH FLUXNi-Fe alloy powder cores are made from alloy powders of nickel and iron.The 15,000 Gauss saturation level of High Flux cores has a higher energy storage capabilityand more effective permeability when compared to the performance of gapped ferrite orpowdered iron cores of a similar size. The excellent DC bias characteristics and low core lossesof High Flux cores offer a reduction in size and the number of winding turns as well as superiormagnetic properties. CSC High Flux cores are excellent choices for applications such as PFCreactors, switching regulator inductors, in-line noise filters, pulse transformers and flybacktransformers. Finished High Flux cores are coated with a Khaki epoxy and come in a variety ofshapes and sizes.

SENDUSTFe-Si-Al alloy powder cores are made from alloy powders of iron,silicon and aluminum.Near-zero magnetostriction makes Sendust cores ideal for eliminating audible noise in filter

inductors. Core losses of Sendust cores are significantly lower than those of powdered ironcores. Especially Sendust E shapes provide a higher energy storage capability than gappedFerrite E cores. Gap losses and eddy current losses are minimized with Sendust E corescompared to gapped ferrite E shapes. Sendust cores are a smart choice for PFC circuits. Othermajor applications include switching regulator inductors, In-line noise filters, pulsetransformers and flyback transformers. Finished Sendust cores are coated in a black epoxy.

MEGA FLUXFe-Si alloy powder cores are made from an alloy of iron and silicon.CSC has developed new magnetic alloy powder cores for the first time in the world under the name ofMega Flux . The innovative design of these unique cores includes a smaller size, higher current andhigher energy storage capability. Mega Flux cores have higher flux density than any other magneticmaterial, 16,000Gauss compared to 15,000Gauss for High Flux cores and 10,000 Gauss for Sendustcores. The extremely good DC bias characteristics provide the best solution for high end applicationssuch as buck/boost inductors for high power supply systems, smoothing chokes for inverters andreactors for electric vehicles. Mega Flux cores pressed with no organic binder have significantly lowercore losses than powdered iron cores and Fe-Si strip cores. They also present excellent thermalproperties with no thermal aging effects. Finished Mega Flux cores are coated with a dark brown epoxy.

Outstanding products begin with a standardizedproduction line and a strict quality control process

MAGNETIC POWDER CORES PRODUCT DESCRIPTION


MAGNETIC POWDER CORES TECHNICAL DATA

Comparison of Core materialsPerm. ( ) Bs (G) Core Loss DC Bias Relative Cost Temp. Stability Curie Temp ( )

MPP 14-200 7,000 Lower Better High Best 450

High Flux 26-160 15,000 Low Best Medium Better 500

Sendust 26-125 10,000 Low Good Low Good 500

Mega Flux 26-90 16,000 Medium Best Low Better 700

Iron 10-100 10,000 High Poor Lowest Poor 770

Fe-si (Gapped) 18,000 High Best Lowest Good 740

Amorphous (Gapped) 15,000 Low Better Medium Good 400

Ferrite (Gapped) 4,500 Lowest Poor Lowest Poor 100~300

Permeability vs DC Bias

Core Loss (at 50kHz)


Materials

Powder

Strip



CM 270 125 EToroidal Core Designation

Core finishE:Epoxy, P :Parylene-C, C :Plastic CaseEpoxy coated

OD size:27.0mm

MPP core

Available size 3.5mm~165.0mm(OD)

Core materialCM:MPP, CH:High Flux, CS :Sendust, CK : Mega Flux

Available perm. 26, 50, 60, 75, 90, 125, 147, 160, 173, 200μPermeability :125μ

CSC’s Core Designation

(nH/N2)

PermeabilityPart No.

C 035 C 039 C 046

C 063 C 066 C 067

C 068 C 078 C 096

C 097 C 102 C 112

C 127 C 166 C 172

C 203 C 229 C 234

C 270 C 330 C 343

C 358 C 400 C 467

C 468 C 508 C 571

C 572 C 610 C 740

C 777 C 778 C 888 C 1016 C 1325 C 1625

26μ026

---

101121

141111

141411

121519

141922

322816

243559

373260

338389

303724476780

60μ060

131720

242650

332525

323226

273543

324351

756138

5681

135

8673

138

75192206

688557

112156184

75μ075

162125

303262

423132

404032

344353

415463

947647

70101169

10791

172

94240257

85107

71137195230

90μ090

192530

363974

503738

484838

405264

496576

1139157

84121202

128109206

112288309

102128

85164234276

125μ125

263542

5054

103

705253

666653

567289

6890

105

15712779

117168281

178152287

156400429

142178119228325384

147μ147

314149

5964122

816263

787863

6788105

81106124

18515093

138198330

210179306

185--

------

160μ160

334553

6469

132

896668

848468

7292

114

87115135

201163101

150215360

228195333

200--

------

173μ173

364857

6975

144

957374

929274

79104123

96124146

217176109

162233

-

---

---

------

200μ200

425667

8086

165

1128384

10510585

90115142

109144169

251--

---

---

---

------

example) AL value of CM270125 is 157(nH/N2)

Nominal Inductance Table (AL Value)



3.94 1.52 1.96

4.32 1.98 2.97

5.21 1.93 3.30

6.99 2.29 3.43

7.24 2.29 3.18

7.32 2.21 5.54

7.62 3.45 5.72

8.51 3.43 3.81

10.29 4.27 3.81

10.29 4.27 4.57

10.80 4.57 4.57

11.90 5.89 4.72

13.46 6.99 5.51

17.40 9.53 7.11

18.03 9.02 7.11

21.1 12.07 7.11

23.62 13.39 8.38

24.30 13.77 9.70

27.70 14.10 11.99

33.83 19.30 11.61

35.20 22.60 9.83

36.70 21.50 11.28

40.70 23.30 15.37

47.60 23.30 18.92

47.60 27.90 16.13

51.70 30.90 14.35

58.00 25.60 16.10

58.00 34.70 14.86

63.1 31.37 26.27

75.2 44.07 36.27

78.9 48.0 13.97

78.9 48.0 17.2

90.0 64.74 17.2

103.1 55.7 17.9

134.2 77.0 26.8

167.2 86.9 27.3

MagneticPath Length

(cm)

CrossSectionA(cm2) CMafter finish 40% winding

factor CH CS CK Before Finish After Finish

Weight(gm)Dimensions(mm)

OD(max) X ID(min) X HT(max)Part Number

CM : MPP Core, CH : High Flux Core, CS : Sendust Core, CK : Mega Flux CoreWindow area : area of inner diameter.In addition to the cores listed above, customized specifications are also available.

C 035

C 039

C 046

C 063

C 066

C 067

C 068

C 078

C 096

C 097

C 102

C 112

C 127

C 166

C 172

C 203

C 229

C 234

C 270

C 330

C 343

C 358

C 400

C 467

C 468

C 508

C 571

C 572

C 610

C 740

C 777

C 778

C 888

C 1016

C 1325

C 1625

0.817

0.942

1.060

1.361

1.363

1.363

1.650

1.787

2.18

2.18

2.38

2.69

3.12

4.11

4.14

5.09

5.67

5.88

6.35

8.15

8.95

8.98

9.84

10.74

11.63

12.73

12.50

14.30

14.37

18.38

20.00

20.00

24.01

24.27

32.42

38.65

0.0137

0.0211

0.0285

0.0470

0.0476

0.0920

0.0725

0.0615

0.0752

0.0945

0.1000

0.0906

0.114

0.192

0.232

0.226

0.331

0.388

0.654

0.672

0.454

0.678

1.072

1.990

1.340

1.250

2.29

1.444

3.675

5.040

1.770

2.270

18.30

3.522

6.71

9.46

WindowArea(cm2)

PackageUnit

(pcs/box)

0.018

0.0308

0.0290

0.0412

0.0412

0.0384

0.0934

0.0922

0.1429

0.1429

0.164

0.273

0.383

0.713

0.638

1.14

1.41

1.49

1.56

2.93

4.01

3.64

4.27

4.27

6.11

7.50

5.14

9.48

7.73

15.25

17.99

17.99

32.92

24.36

45.56

59.31

Surface Area(cm2)

0.47

0.74

0.90

1.7

1.7

2.4

2.7

2.4

3.1

3.5

3.7

4.3

5.6

9.3

9.9

12.1

15.7

17.9

24.7

31.5

29.3

34.5

48.4

69.2

61.6

64.2

84.8

77.2

125.1

194.2

117.3

130.2

134.5

206.1

366.3

538.7

0.61

0.93

1.13

2.03

2.06

2.76

3.31

3.04

4.14

4.47

4.85

6.05

8.00

13.66

13.91

18.95

24.13

26.78

34.42

49.01

52.34

56.09

73.77

96.50

97.79

108.52

120.40

133.19

173.99

283.09

224.42

236.84

262.03

358.37

648.48

689.82

0.09

0.19

0.26

0.56

0.60

1.12

1.03

0.94

1.41

1.76

2.09

2.11

3.13

6.9

8.2

10.0

15.9

19.6

35.6

47.0

35.3

52

91

182

130

132

248

181

444

764

301

377

333

774

1863

3267

0.09

0.18

0.25

0.53

0.57

1.07

0.98

0.90

1.34

1.68

2.00

2.02

2.99

6.6

8.0

10.0

15.1

19

34.0

44.8

33.7

50

87

174

124

126

237

173

423

729

287

359

319

739

1779

3120

40k

40k

40k

30k

20k

20k

16k

16k

8k

8k

8k

6k

4K

1,960

1,960

1,368

850

750

360

240

280

240

120

72

72

96

77

88

24

15

40

35

15

12

4

4

0.07

0.13

0.20

0.41

0.44

0.83

0.76

0.69

1.04

1.30

1.55

1.57

2.32

5.2

6.1

7.4

11.7

14.5

26.4

34.8

26.2

39

67

134

96

98

184

133

329

566

223

279

255

572

1376

2413

0.08

0.15

0.23

0.47

0.50

0.96

0.88

0.80

1.21

1.50

1.79

1.81

2.69

6.0

7.1

8.7

13.6

16.8

30.6

40.4

30.3

45

78

157

112

114

213

155

381

656

258

323

305

665

1620

2808

3.56 1.78 1.52

3.94 2.24 2.54

4.65 2.36 2.54

6.35 2.79 2.79

6.60 2.67 2.54

6.60 2.67 4.78

6.86 3.96 5.08

7.87 3.96 3.18

9.65 4.78 3.18

9.65 4.78 3.96

10.16 5.08 3.96

11.18 6.35 3.96

12.70 7.62 4.75

16.51 10.16 6.35

17.27 9.65 6.35

20.32 12.70 6.35

22.86 13.97 7.62

23.57 14.40 8.89

26.92 14.73 11.18

33.02 19.94 10.67

34.29 23.37 8.89

35.81 22.35 10.46

39.88 24.13 14.48

46.74 24.13 18.03

46.74 28.70 15.24

50.80 31.75 13.46

57.15 26.39 15.24

57.15 35.56 13.97

62.0 32.6 25.0

74.1 45.3 35.0

77.8 49.23 12.7

77.8 49.23 15.9

88.9 66.0 15.9

101.6 57.2 16.5

132.5 78.6 25.4

165.0 88.9 25.4

Core Dimension Table(milimeters)



The inductance of a wound core at a given number of turns is calculated using the following formula.

L

L = inductance(μH)

μ = core permeability

N = number of turns

A = effective cross section area(cm2)

= mean magnetic path length(cm)

LN = Inductance at N turns(μH)

AL = nominal Inductance(nH/N2)

N2A 10-20.4 μ

LN

=

= AL N2 10-3

Ampere’s Law

Faraday’s Law

Magnetic Design Formulas

Inductance of a Wound Core

Ampere’s Law and Faraday’s Law show the relations of permeability, flux density and magnetizing force of a wound core.

H = magnetizing force(oersteds)

N = number of turns

l = peak magnetizing current(amperes)

= mean magnetic path length(cm)

Bmax = maximum flux density(gausses)

Erms = voltage across coil(volts)

f = frequency(hertz)

Permeability - Flux Density - Magnetizing Force

Inductor specification

a) Formula to calculate L at 0Ampere

LN = AL N2 10-3

The Nominal inductance table on page 7 shows the AL value of CM270125 to be 157.

Therefore, L ( 0A) = 157 222 0.001 = 76 (μH)

b) Determine DC magnetizing force (H) by using Ampere’s law to achieve the roll off.

H = 0.4 Nl /

H = 0.4 3.14 22 10 / 6.35 = 43.5(Oe)

The magnetizing force(dc bias) is 43.5 oersteds, yielding 64% of initial permeability. See on page 11.

The inductance at 10Ampere will decrease the inductance by 64% compared with 0Ampere.

Therefore, L( 10A) = 76 0.64

= 48.6 (μH)

Inductance calculation by AL vs Nl Curve is also available on page 24.

solution

- Core : CM270125

- Number of Windings : 22Turns

- Current : DC 10Amperes

Inductance Calculation by Permeability vs DC Bias Curves

H Nl0.4

Bmax

=

= Erms 108

4.44fAN

μ B=H



For toroidal powder cores, the effective area(A) is the same as the cross sectional

area. By definition and Ampere’s Law, the effective magnetic path length is the ratio

of ampere-turns(NI) to the average magnetizing force. Using Ampere’s Law and

averaging the magnetizing force gives the formula for effective path length.

Mean Magnetic Path Length

(OD - ID)ODID( )

=ln

Q = quality factor

= 2 frequency (hertz)

L = inductance (henries)

Rdc = DC winding resistance (ohms)

Rac = resistance due to core loss (ohms)

Rd = resistance due to winding dielectric loss (ohms)

QL

=Rdc Rac Rd

Powder cores have low hysteresis loss, minimizing signal distortion, and low residual loss. The total core loss at low flux densities is the

sum of three frequency dependent losses of hysteresis loss, residual loss, and eddy current loss. The core loss is calculated from the

following Legg’s equation.

When a varying magnetic field passes through the core, eddy currents are induced in it. Joule heat loss by these currents is called eddy

current loss. Hysteresis loss is due to the irreversible behavior in the hysteresis curve and equal to the enclosed area of the loop.

The other core loss is called residual loss.

Where Rac = core loss resistance (ohms)

a = hysteresis loss coefficient

c = residual loss coefficient

e = eddy current loss coefficient

, L, Bmax, f = same as mentioned before Eddy current loss

Core Loss

Residual loss

Hysteresis loss

Total loss factor

Rac aBmaxf cf ef2

L=

OD = outside diameter of core (cm)

ID = inside diameter of core (cm)

A = core cross section (effective area)

= mean magnetic path length (cm)

The Q factor is defined as the ratio of reactance to the effective resistance for an inductor and thus indicates its quality. The Q of wound core can

be calculated using the following formula, when neglecting the effects of self-resonance caused by the distributed capacitance resulting from the

differential voltage between adjacent turns.

Q Factor


MPP

Hig

h F

lux


Permeability vs DC Bias Curves

μ2660125147160173200

a0.010.010.010.010.010.010.01

c2.0302.4122.5232.4712.4952.5132.524

b1.42E-071.27E-074.07E-077.58E-078.20E-071.03E-061.18E-06

%perm =1

a+b Hc

μ2660125147160

a0.010.010.010.010.01

c2.0872.3262.3862.6192.475

b3.41E-085.42E-082.09E-071.16E-072.50E-07

%perm =1

a+b Hc


Sendust

Meg

a Fl

ux


μ26607590125

a0.010.010.010.010.01

c1.6971.7821.7551.6761.626

b1.23E-062.75E-064.58E-069.54E-062.41E-05

%perm =1

a+b Hc

μ2650607590

a0.010.010.010.010.01

c1.8832.1771.9821.8411.828

b9.96E-087.35E-083.30E-071.11E-062.01E-06

%perm =1

a+b Hc

Permeability vs Frequency Curves

Hig

h F

lux

MPP

Sendust

Meg

a Fl

ux





MPP Core Loss

MPP 26μ, 60μ

PL =0.22 B1.99

f 1.68

(B :kilogauss, f :kHz)

MPP

26μ, 6

0μ

MPP

125μ

MPP 125μ


MPP Core Loss


100 1000 100001

10

100

1000

10000

Flux Density (Gauss)

Core

Loss

(m

W/c

m)

P=B2.026(0.865f+0.2634f1.712)P:mW/cc, B:kGauss, f:kHz

3

5kHz

10kHz

20kHz

50kHz

100kHz

200kHz

300kHz

MPP

147μ, 1

60μ, 1

73μ

100 1000 100001

10

100

1000

10000

Flux Density (Gauss)

Co

re L

oss

(m

W/c

m3)

P=B2.045(0.848f+0.3513f1.716)P:mW/cc, B:kGauss, f:kHz

5kHz

10kHz

20kHz

50kHz

100kHz

200kHz

300kHz

MPP

200μ

MPP 147μ, 160μ, 173μ

MPP 200μ


High Flux Core Loss


Hig

h F

lux

26μ

Hig

h F

lux

60μ

High Flux 26μ

High Flux 60μ



High Flux Core Loss

Hig

h F

lux

125μ

Hig

h F

lux

147μ, 1

60μ

High Flux 125μ

High Flux 147μ, 160μ



Sendust Core Loss

Sendust

26μ

Sendust

60μ

,75μ,9

0μ,1

25μ

Sendust 26μ

Sendust 60μ, 75μ, 90μ, 125μ



Mega Flux Core Loss

Meg

a Fl

ux

26μ

Meg

a Fl

ux

50μ, 6

0μ, 7

5μ, 9

0μ

Mega Flux 26μ

Mega Flux 50μ, 60μ, 75μ, 90μ



Hig

h F

lux

MPP

Sendust

Meg

a Fl

ux

Temperature Stability



10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

inchcmcm2( 10-3) Cir-MilArea Diameter

gm/cmWeight

200 400 600 800

11046

8798

7022

5610

4556

3624

2905

2323

1857

1490

1197

954.8

761.7

620.0

497.3

396.0

316.8

259.2

207.3

169.0

134.5

110.2

90.25

72.25

56.25

44.89

36.00

30.25

24.01

18.49

14.44

11.56

9.00

7.29

6.25

55.9

44.5

35.64

28.36

22.95

18.37

14.73

11.68

9.326

7.539

6.065

4.837

3.857

3.135

2.514

2.002

1.603

1.313

1.0515

0.8548

0.6785

0.5595

0.4559

0.3662

0.2863

0.2268

0.1813

0.1538

0.1207

0.0932

0.0723

0.0584

0.04558

0.03683

0.03165

10-6 cm at 20

32.70

41.37

52.09

65.64

82.80

104.3

131.8

165.8

209.5

263.9

332.3

418.9

531.4

666.0

842.1

1062.0

1345.0

1687.6

2142.7

2664.3

3402.2

4294.6

5314.9

6748.6

8572.8

10849

13608

16801

21266

27775

35400

43405

54429

70308

85072

Cir-Mil

10384

8226

6529

5184

4109

3260

2581

2052

1624

1289

1024

812.3

640.1

510.8

404.0

320.4

252.8

201.6

158.8

127.7

100.0

79.21

64.00

50.41

39.69

31.36

25.00

20.25

16.00

12.25

9.61

7.84

6.25

4.84

4.00

cm2

( 10-3)

AWGWireNo.

53.61

41.68

33.08

26.26

20.82

16.51

13.07

10.39

8.228

6.531

5.188

4.116

3.243

2.588

2.047

1.623

1.280

10.21

0.8046

0.6470

0.5067

0.4013

0.3242

0.2554

0.2011

0.1589

0.1266

0.1026

0.08107

0.06207

0.04869

0.03972

0.03166

0.02452

0.0202

0.267

0.238

0.213

0.190

0.171

0.153

0.137

0.122

0.109

0.0980

0.0879

0.0785

0.0701

0.0632

0.0566

0.0505

0.0452

0.0409

0.0366

0.0330

0.0294

0.0267

0.0241

0.0216

0.0191

0.0170

0.0152

0.0140

0.0124

0.0109

0.0096

0.00863

0.00762

0.00685

0.00635

0.1051

0.0938

0.0838

0.0749

0.0675

0.0602

0.0539

0.0482

0.0431

0.0386

0.0346

0.0309

0.0276

0.0249

0.0223

0.0199

0.0178

0.0161

0.0144

0.0130

0.0116

0.0105

0.0095

0.0085

0.0075

0.0067

0.0060

0.0055

0.0049

0.0043

0.0038

0.0034

0.0030

0.0027

0.0025

0.468

0.3750

0.2977

0.2367

0.1879

0.1492

0.1184

0.0943

0.07472

0.05940

0.04726

0.03757

0.02965

0.02372

0.01884

0.01498

0.01185

0.00945

0.00747

0.00602

0.00472

0.00372

0.00305

0.00214

0.00189

0.00150

0.00119

0.000977

0.000773

0.000593

0.000464

0.000379

0.000299

0.000233

0.000195

10.4

8.23

6.53

5.18

4.11

3.26

2.58

2.05

1.62

1.29

1.02

0.812

0.640

0.511

0.404

0.320

0.253

0.202

0.159

0.128

0.100

0.0792

0.0640

0.0504

0.0397

0.0314

0.0250

0.0203

0.0160

0.0123

0.00961

0.00785

0.00625

0.00484

0.00400

20.8

16.4

13.06

10.4

8.22

6.52

5.16

4.10

3.25

2.58

2.05

1.63

1.28

1.02

0.808

0.641

0.506

0.403

0.318

0.255

0.200

0.158

0.128

0.101

0.0794

0.0627

0.0500

0.0405

0.0320

0.0245

0.0192

0.0157

0.0125

0.00968

0.00800

31.2

24.6

19.6

15.5

12.3

9.78

7.74

6.15

4.88

3.87

3.08

2.44

1.92

1.53

1.21

0.962

0.759

0.604

0.477

0.382

0.300

0.237

0.192

0.152

0.119

0.0940

0.0750

0.0608

0.0480

0.0368

0.0288

0.0236

0.0188

0.0145

0.0120

41.6

32.8

26.1

20.8

16.4

13.0

10.3

8.20

6.50

5.16

4.10

3.25

2.56

2.04

1.62

1.28

1.01

0.806

0.636

0.510

0.400

0.316

0.256

0.202

0.159

0.125

0.100

0.0810

0.0640

0.0490

0.0384

0.0314

0.0250

0.0194

0.0160

Bare Area Resistivity Heavy Synthetics Current Capacity Amps(listed by columns of amps/cm2)

Wire Table



035039 046

063 066 067

068 078 096

097 102112

127166 172

203229 234

270 330 343

358 400 467

468 508571

572 777

Turns / Single Layer

Cir-Mils cm2 ft100 (unity)b 0

inch

0.02290.03440.0375

0.04420.04350.0575

0.05860.05240.0588

0.06320.06510.0720

0.08150.10570.1204

0.12040.14050.1473

0.17140.19430.1923

0.2040.2420.284

0.2730.2790.296

0.3060.340

cm

0.6981.0491.143

1.3481.3271.754

1.7861.5981.793

1.9281.9862.195

2.493.223.67

3.674.294.49

5.235.935.87

6.227.388.66

8.348.519.02

9.3310.40

ft

0.01950.02930.0324

0.03790.03710.0531

0.05120.04170.0448

0.04980.05040.0507

0.05740.07210.0763

0.07630.08860.0982

0.12330.12380.1059

0.12380.15780.204

0.17060.16230.212

0.17390.193

cm

0.5940.8940.988

1.1561.1321.620

1.5611.2721.366

1.5191.5371.545

1.7512.202.33

2.332.703.00

3.763.783.23

3.784.816.22

5.204.956.46

5.305.90

3,6006,0805,780

8,1008,1007,57018,50018,20028,200

28,20032,40053,800

75,600140,600126,000

225,600277,700293,800

308,000577,600788,500

719,100842,700842,700

1,206,0001,484,0001,014,049

1,871,0003,550,000

0.0180.03080.029

0.04120.04120.0384

0.09340.09220.1429

0.14290.1640.273

0.3830.7130.638

1.141.411.49

1.562.934.01

3.644.274.27

6.117.505.14

9.4817.99

CoreSize

0.195 0.1080.227 0.1870.262 0.195

0.347 0.2120.359 0.2020.361 0.292

0.378 0.3940.433 0.2650.526 0.293

0.526 0.3230.554 0.3330.618 0.353

0.717 0.4510.932 0.5990.980 0.641

1.148 0.6841.283 0.7781.319 0.843

1.468 0.9441.840 1.1031.974 1.142

2.01 1.1652.22 1.3852.51 1.525

2.61 1.5682.85 1.6002.98 1.34

3.20 1.7484.40 2.14

mm

4.95 2.745.77 4.756.65 4.94

8.81 5.389.12 5.139.17 7.42

9.60 10.0111.0 6.7313.4 7.44

13.4 8.2014.1 8.4615.7 9.0

18.2 11.523.7 15.224.9 16.3

29.2 17.432.6 19.833.5 21.4

37.3 24.046.7 28.050.1 29.0

51.1 29.656.4 35.263.8 38.7

66.3 39.872.4 40.675.7 34.0

81.3 44.4112.0 54.3

Window AreaaWire Length / Turn Wound Dimensionc

OD HT(Max)

CoreSize

WireNo.

WireDia

ID(mm)

046

1.93

063066

2.29

068078

3.45

096097

4.27

102

4.57

112

5.89

127

6.99

166

9.53

172

9.02

203

12.07

229

13.39

234

13.77

270

14.10

330

19.30

343

22.60

358

21.50

400467

23.30

468

27.90

508

30.90

571

25.60

572

34.70

610

31.37

777

48.00

101112

131415

161718

19 2022

242628

30323436

2.672.382.13

1.901.711.53

1.371.221.09

0.980.880.70

0.560.450.36

0.290.240.190.15

912

15192531

81114

19233038

11

141823

29364658

91114

182329

37465873

9

101215

202532

404962

91112

141621

263342

5264

10

111315

171925

314050

6377

10

111315

171921

242735

445569

9

101214

161820

232633

415265

13

151719

222528

323545

567189

15

171922

252831

354050

637999

15

172022

252932

364152

6581101

16

182023

262933

374253

6683104

23

262932

374146

525874

92115143

27

303438

434955

616987

108135168

25

293237

414652

586582

103129160

22

252831

354045

505771

90112140

263034

384348

546168

7786108

134168

303338

434854

606876

8595120

149186

263034

394349

556270

7888111

138174

374248

546068

768596

108120152

189237

353944

505663

718090

101113143

536067

768495

106119134

150168211

Single Layer Winding Capacity

a : Window Area (= /4 ID2: Core inside diameter), b : Winding Factor ( k= Usable window area/Total window area), c : 100% Winding Assumed

Winding Data


MAGNETIC POWDER CORES NOTES

Inductor specification

Solution

a) Calculate NI (Ampere Turns) NI = 22Turns X 10Ampere = 220

b) Read the AL value of CM270125 using the AL vs NI curve on page 43.

AL value of CM270125 yields 100.4 when NI is 220.

c) Calculate L at 10Ampere by using formula; LN = AL x N2X 10-3(μH)

Therefore,

L( 10A) = 100.4 222 0.001

= 48.6(μH)

Inductance calculation by Permeability vs DC Bias Curve is also available on Page 11.

- Core : CM270125

- Number of Winding : 22Turns

- Current : DC 10Amperes

Inductance Calculation by AL vs NI Curves;


TOROIDALMAGNETIC

POWDERCORES

Tolerance of AL value

OD 035~OD 046OD 063~OD 112OD 127~OD 1625

Core Size

15%12%8%

NA8%8%

12%8%8%

12%8%8%

Sendust MPP High Flux Mega Flux


OD035Core Dimensions

OD(max) ID(min) HT(max)

Before coating (mm) 3.56 1.78 1.52(inch) 0.140 0.070 0.060

After coating (mm) 3.76 1.58 1.72(parylene-C) (inch) 0.148 0.062 0.068

Magnetic Dimensions

0.0137cm2 0.817cm 0.018cm2 0.010746cm3

0.002in2 0.317in 3,600cmil 0.000656in3

Winding Information

Single layer winding with 1 inch leads

AWG Wire Single Layer AWG Wire Single Layer

No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc,

282930313233343536

0.03660.03300.02940.02670.02410.02160.01910.01700.0152

91011131416192124

0.02370.03140.04310.05810.07680.1050.1460.2000.272

3738394041424344

0.01400.01240.01990.00960.008630.007620.006850.00635

2730354044505660

0.3630.5030.7271.021.371.902.673.45

Available CoresPart No.

MPP High Flux Sendust Mega Flux

Perm.

(μ)

AL

(nH/N2)

-CM035060

--

CM035125CM035147CM035160

--

-CH035060

--

CH035125----

-CS035060CS035075CS035090CS035125

----

-CK035060CK035075CK035090

-----

-131619263133--

26607590125147160173200

ID 1.78mm HT 1.52mm

AL vs NI Curve (125μ)

OD 3.56mm / 0.140inch

TORO

IDAL M

AGNETIC POW

DER CO

RES

Cross Section Path Length Window Area Volume(A) ( ) (Wa) (V)


TORO

IDAL M

AGNETIC POW

DER CO

RES




After coating (mm) 4.14 2.04 2.74(Parylene-C) (inch) 0.163 0.080 0.108

Magnetic DimensionsCross Section Path Length Window Area Volume

(A) ( ) (Wa) (V)

Winding Information




0.04090.03660.03300.02940.02670.02410.02160.01910.0170

111214161820232629

272829303132333435

0.02480.03420.04580.06380.08690.1160.1610.2260.313

363738394041424344

0.01520.01400.01240.01090.00960.008630.007620.006850.00635

333641475359677480

0.4300.5790.8071.181.672.253.154.455.76



Perm.

(μ)

AL

(nH/N2)

-CM039060

--

CM039125CM039147CM039160

--

-CH039060

--

CH039125----

-CS039060CS039075CS039090CS039125

----

-CK039060CK039075CK039090

-----

-172125354145--

26607590125147160173200

ID 2.24mm HT 2.54mm

OD 3.94mm / 0.155inch

AL vs NI Curve (125μ)

0.0211cm2 0.942cm 0.0308cm2 0.019670cm3

0.003245in2 0.370inch 6,080cmil 0.001200in3


TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.0285cm2 1.060cm 0.029cm2 0.0302cm3

0.00442in2 0.418in 5,780cmil 0.001837in3

Winding Information




262728293031323334

0.04520.04090.03660.03300.02940.02670.02410.02160.0191

91012131517192225

0.02050.02800.03880.05240.07340.1010.1350.1880.266

353637383940414243

0.01700.01520.01400.01240.01090.00960.008630.007620.00685

283135394551576471

0.3710.5110.6910.9681.422.022.733.835.42



Perm.

(μ)

AL

(nH/N2)

-CM046060

--

CM046125CM046147CM046160

--

-CH046060

--

CH046125----

-CS046060CS046075CS046090CS046125

----

-CK046060CK046075CK046090

-----

-202530424953--

26607590125147160173200

ID 2.36mm HT 2.54mm

AL vs NI Curve (60μ, 125μ)

OD 4.65mm / 0.183inch


TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.0470cm2 1.361cm 0.0412cm2 0.064219cm3

0.00729in2 0.536in 8,100cmil 0.003919in3

Winding Information




242526272829303132

0.05660.05050.04520.04090.03660.03300.02940.02670.0241

81011131416192123

0.01320.01830.02530.03460.04820.06530.09180.1260.170

333435363738394041

0.02160.01910.01700.01520.01400.01240.01090.00960.00863

263034384247546168

0.2380.3370.4700.6500.8801.241.822.593.50



Perm.

(μ)

AL

(nH/N2)

-CM063060

--

CM063125CM063147CM063160CM063173CM063200

-CH063060

--

CH063125CH063147CH063160

--

-CS063060CS063075CS063090CS063125

----

-CK063060CK063075CK063090

-----

-2430365059646980

26607590125147160173200

ID 2.79mm HT 2.79mm

OD 6.35mm / 0.250inch



TORO

IDAL M

AGNETIC POW

DER CO

RES




After coating (mm) 7.24 2.29 3.18(Epoxy) (inch) 0.285 0.090 0.125


(A) ( ) (Wa) (V)

0.0476cm2 1.363cm 0.0412cm2 0.063971cm3

0.00738in2 0.537in 8,100cmil 0.003904in3

Winding Information




252627282930313233

0.05050.04520.04090.03660.03300.02940.02670.02410.0216

101113141619212326

0.01800.02490.03410.04740.06420.09020.1240.1670.233

343536373839404142

303438424754616877

0.01910.01700.01520.01400.01240.01090.00960.008630.00762

0.3300.4610.6370.8621.211.782.533.434.81



Perm.

(μ)

AL

(nH/N2)

CM066026CM066060

--

CM066125CM066147CM066160CM066173CM066200

CH066026CH066060

--

CH066125CH066147CH066160

--

-CS066060CS066075CS066090CS066125

----

-CK066060CK066075CK066090

-----

112632395464697586

26607590125147160173200

ID 2.67mm HT 2.54mm


OD 6.6mm / 0.260inch


TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.0920cm2 1.363cm 0.0384cm2 0.1254cm3

0.01426in2 0.537in 7,570cmil 0.007443in3

Winding Information




252627282930313233

0.05050.04520.04090.03660.03300.02940.02670.02410.0216

91112141618202225

0.02230.03120.04310.06050.08260.1170.1620.2200.309

343536373839404142

0.01910.01700.01520.01400.01240.01090.00960.008630.00762

293236404552596674

0.4400.6170.8571.171.642.423.464.706.62



Perm.

(μ)

AL

(nH/N2)

CM067026CM067060

--

CM067125CM067147CM067160CM067173CM067200

CH067026CH067060

--

CH067125CH067147CH067160

--

-CS067060CS067075CS067090CS067125

----

-CK067060CK067075CK067090

-----

21506274103122132144165

26607590125147160173200

ID 2.67mm HT 4.78mm

OD 6.6mm / 0.260inch



TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.0725cm2 1.65cm 0.0934cm2 0.126009cm3

0.01124in2 0.650in 18,500cmil 0.007693in3

Winding Information




212223242526272829

0.07850.07010.06320.05660.05050.04520.04090.03660.0330

91112141618212326

0.009020.01260.01740.02420.03380.04720.06510.09150.125

303132333435363738

0.02940.02670.02410.02160.01910.01700.01520.01400.0124

293336414652586573

0.1770.2440.3310.4660.6640.9321.291.762.48



Perm.

(μ)

AL

(nH/N2)

CM068026CM068060

--

CM068125CM068147CM068160CM068173CM068200

CH068026CH068060

--

CH068125CH068147CH068160

--

-CS068060CS068075CS068090CS068125

----

-CK068060CK068075CK068090

-----

1433425070818995112

26607590125147160173200

ID 3.96mm HT 5.08mm


OD 6.86mm / 0.270inch


TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.0615cm2 1.787cm 0.0922cm2 0.1099cm3

0.00953in2 0.704in 18,200cmil 0.0067in3

Winding Information




212223242526272829

0.07850.07010.06320.05660.05050.04520.04090.03660.0330

91112141618202326

0.00780.01080.01480.02060.02850.03970.05450.07620.104

303132333435363738

0.02940.02670.02410.02160.01910.01700.01520.01400.0124

293336414652586472

0.1460.2010.2720.3820.5430.7601.051.432.01



Perm.

(μ)

AL

(nH/N2)

CM078026CM078060

__

CM078125CM078147CM078160CM078173CM078200

CH078026CH078060

__

CH078125CH078147CH078160

__

_CS078060CS078075CS078090CS078125

____

_CK078060CK078075CK078090

_____

112531375262667383

26607590125147160173200

ID 3.96mm HT 3.18mm

OD 7.87mm / 0.310inch



TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.0752cm2 2.18cm 0.1429cm2 0.1639cm3

0.01166in2 0.859in 28,200cmil 0.0100in3

Winding Information




192021222324252627

0.09800.08790.07850.07010.06320.05660.05050.04520.0409

91112141618212326

0.00530.00730.01010.01410.01930.02680.03720.05190.0714

282930313233343536

0.03660.03300.02940.02670.02410.02160.01910.01700.0152

293337414651586573

0.1000.1360.1930.2660.3600.5050.7191.011.40



Perm.

(μ)

AL

(nH/N2)

CM096026CM096060

--

CM096125CM096147CM096160CM096173CM096200

CH096026CH096060

--

CH096125CH096147CH096160

--

-CS096060CS096075CS096090CS096125

----

-CK096060CK096075CK096090

-----

112532385363687484

26607590125147160173200

ID 4.78mm HT 3.18mm


OD 9.65mm / 0.380inch


TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.0945cm2 2.18cm 0.1429cm2 0.2060cm3

0.01465in2 0.859in 28,200cmil 0.01258in3

Winding Information




192021222324252627

0.09800.08790.07850.07010.06320.05660.05050.04520.0409

91112141618212326

0.005670.007830.01090.01520.02090.02910.04050.05670.0782

282930313233343536

0.03660.03300.02940.02670.02410.02160.01910.01700.0152

293337414651586573

0.1100.1500.2120.2930.3970.5580.7951.121.55



Perm.

(μ)

AL

(nH/N2)

CM097026CM097060

__

CM097125CM097147CM097160CM097173CM097200

CH097026CH097060

__

CH097125CH097147CH097160

__

_CS097060CS097075CS097090CS097125

____

_CK097060CK097075CK097090

_____

1432404866788492105

26607590125147160173200

ID 4.78mm HT 3.96mm

OD 9.65mm / 0.380inch



TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.1000cm2 2.38cm 0.164cm2 0.2380cm3

0.01550in2 0.906in 32,400cmil 0.0140in3

Winding Information




181920212223242526

0.1090.09800.08790.07850.07010.06320.05660.05050.0452

91012131517202225

0.004420.006130.008470.01180.01640.02260.03150.04390.0614

272829303132333435

0.04090.03660.03300.02940.02670.02410.02160.01910.0170

283235404449556270

0.08460.1190.1620.2300.3170.4300.6050.8621.21



Perm.

(μ)

AL

(nH/N2)

CM102026CM102060

--

CM102125CM102147CM102160CM102173CM102200

CH102026CH102060

--

CH102125CH102147CH102160

--

-CS102060CS102075CS102090CS102125

----

-CK102060CK102075CK102090

-----

1432404866788492105

26607590125147160173200

ID 5.08mm HT 3.96mm


OD 10.16mm / 0.400inch


TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.0906cm2 2.69cm 0.273cm2 0.2437cm3

0.01403in2 1.08in 53,800cmil 0.01515in3

Winding Information




161718192021222324

0.1370.1220.1090.09800.08790.07850.07010.06320.0566

91112141618212326

0.002990.004120.005720.007920.01090.01520.02120.02920.0406

252627282930313233

0.05050.04520.04090.03660.03300.02940.02670.02410.0216

293337424652586472

0.05660.07920.1090.1530.2090.2970.4100.5560.782



Perm.

(μ)

AL

(nH/N2)

CM112026CM112060

--

CM112125CM112147CM112160CM112173CM112200

CH112026CH112060

--

CH112125CH112147CH112160

--

CS112026CS112060CS112075CS112090CS112125

----

CK112026CK112060CK112075CK112090

-----

112632385363687485

26607590125147160173200

ID 6.35mm HT 3.96mm

OD 11.18mm / 0.440inch



TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.114cm2 3.12cm 0.383cm2 0.35568cm3

0.01767in2 1.229in 75,600cmil 0.002172in3

Winding Information




151617181920212223

0.1530.1370.1220.1090.09800.08790.07850.07010.0632

101113151719222528

0.002710.003760.005200.007220.01000.01390.01930.02700.0371

242526272829303132

0.05660.05050.04520.04090.03660.03300.02940.02670.0241

313540455056636977

0.05180.07230.1010.1400.1970.2690.3810.5270.716



Perm.

(μ)

AL

(nH/N2)

CM127026CM127060

--

CM127125CM127147CM127160CM127173CM127200

CH127026CH127060

--

CH127125CH127147CH127160

--

CS127026CS127060CS127075CS127090CS127125

----

CK127026CK127060CK127075CK127090

-----

122734405667727990

26607590125147160173200

ID 7.62mm HT 4.75mm


OD 12.70mm / 0.500inch


TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.1920cm2 4.11cm 0.713cm2 0.7891cm3

0.0298in2 1,619in 140,600cmil 0.0438in3

Winding Information




121314151617181920

0.2130.1900.1710.1530.1370.1220.1090.09800.0879

101113151719212427

0.001650.002300.003180.004430.006170.008560.01190.01660.0231

212223242526272829

0.07850.07010.06320.05660.05050.04520.04090.03660.0330

313539444955626977

0.03230.04530.06260.08760.1230.1720.2390.3360.460



Perm.

(μ)

AL

(nH/N2)

CM166026CM166060

--

CM166125CM166147CM166160CM166173CM166200

CH166026CH166060

--

CH166125CH166147CH166160

--

CS166026CS166060CS166075CS166090CS166125

----

CK166026CK166060CK166075CK166090

-----

15354352728892104115

26607590125147160173200

ID 10.16mm HT 6.35mm

OD 16.51mm / 0.650inch



TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.232cm2 4.14cm 0.683cm2 0.9605cm3

0.0360in2 1.63in 126,000cmil 0.05868in3

Winding Information




121314151617181920

0.2130.1900.1710.1530.1370.1220.1090.09800.0879

910121416 18202326

0.001610.002250.003110.004340.006060.008430.01180.01640.0228

212223242526272829

0.07850.07010.06320.05660.05050.04520.04090.03660.0330

293337414752586573

0.03190.04490.06210.08690.1220.1710.2370.3340.458



Perm.

(μ)

AL

(nH/N2)

CM172026CM172060

--

CM172125CM172147CM172160CM172173CM172200

CH172026CH172060

--

CH172125CH172147CH172160

--

CS172026CS172060CS172075CS172090CS172125

----

CK172026CK172060CK172075CK172090

-----

1943536489105114123142

26607590125147160173200

ID 9.65mm HT 6.35mm


OD 17.27mm / 0.680inch


TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.226cm2 5.09cm 1.14cm2 1.1510cm3

0.035in2 2.01in 225,600cmil 0.07035in3

Winding Information




121314151617181920

0.2130.1900.1710.1530.1370.1220.1090.09800.0879

131517192225283235

0.002210.003070.004240.005900.008220.01140.01590.02220.0308

212223242526272829

0.07850.07010.06320.05660.05050.04520.04090.03660.0330

404550566371798998

0.04300.06040.08340.1170.1640.2300.3180.4480.614



Perm.

(μ)

AL

(nH/N2)

CM203026CM203060

--

CM203125CM203147CM203160CM203173CM203200

CH203026CH203060

--

CH203125CH203147CH203160

--

CS203026CS203060CS203075CS203090CS203125

----

CK203026CK203060CK203075CK203090

-----

1432414968818796109

26607590125147160173200


OD 20.32mm / 0.800inch



TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.331cm2 5.67cm 1.41cm2 1.8771cm3

00.0513in2 2.23in 277,700cmil 0.11455in3

Winding Information




121314151617181920

0.2130.1900.1710.1530.1370.1220.1090.09800.0879

151719222528313540

0.002760.003840.005320.007420.01040.01440.02020.02810.0392

212223242526272829

0.07850.07010.06320.05660.05050.04520.04090.03660.0330

4550566371798899109

0.05480.07710.1070.1500.2100.2950.4090.5770.791



Perm.

(μ)

AL

(nH/N2)

CM229026CM229060

--

CM229125CM229147CM229160CM229173CM229200

CH229026CH229060

--

CH229125CH229147CH229160

--

CS229026CS229060CS229075CS229090CS229125

----

CK229026CK229060CK229075CK229090

-----

1943546590106115124144

26607590125147160173200



OD 22.86mm / 0.900inch


TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.388cm2 5.88cm 1.49cm2 2.2814cm3

0.061in2 2.32in 293,800cmil 0.1415in3

Winding Information




121314151617181920

0.2130.1900.1710.1530.1370.1220.1090.09800.0879

151720222529323641

0.003070.004290.005950.008320.01160.01620.02270.03180.0443

212223242526272829

0.07850.07010.06320.05660.05050.04520.04090.03660.0330

46525865738191101112

0.06200.08740.12100.1700.2380.3360.4650.6570.901


MPP High Flux Sendust Mega FluxPerm.

(μ)

AL

(nH/N2)

CM234026CM234060

--

CM234125CM234147CM234160CM234173CM234200

CH234026CH234060

--

CH234125CH234147CH234160

--

CS234026CS234060CS234075CS234090CS234125

----

CK234026CK234060CK234075CK234090

-----

22516376105124135146169

26607590125147160173200


OD 23.57mm / 0.928inch



TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.654cm2 6.35cm 1.56cm2 4.154cm3

0.1014in2 2.50in 308,000cmil 0.2536in3

Winding Information




121314151617181920

0.2130.1900.1710.1530.1370.1220.1090.09800.0879

161820232629333742

0.003670.005140.007150.01000.01410.01970.02760.03870.0541

212223242526272829

0.07850.07010.06320.05660.05050.04520.04090.03660.0330

47535966748393104115

0.07590.1070.1490.2090.2940.4140.5750.8121.11



Perm.

(μ)

AL

(nH/N2)

CM270026CM270060

--

CM270125CM270147CM270160CM270173CM270200

CH270026CH270060

--

CH270125CH270147CH270160

--

CS270026CS270060CS270075CS270090CS270125

----

CK270026CK270060CK270075CK270090

-----

327594113157185201217251

26607590125147160173200

ID 14.73mm HT 11.18mm


OD 26.92mm / 1.060inches


TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

00.672cm2 8.15cm 2.93cm2 5.4768cm3

0.1042in2 3.21in 577,600cmil 0.3345in3

Winding Information




121314151617181920

0.2130.1900.1710.1530.1370.1220.1090.09800.0879

232629323741465258

0.005170.007220.01000.01400.01970.02740.03840.05380.0750

212223242526272829

0.07850.07010.06320.05660.05050.04520.04090.03660.0330

66748292103115128143159

0.1050.1480.2060.2890.4060.5720.7941.121.54



Perm.

(μ)

AL

(nH/N2)

CM330026CM330060

--

CM330125CM330147CM330160CM330173

-

CH330026CH330060

--

CH330125CH330147CH330160

--

CS330026CS330060CS330075CS330090CS330125

----

CK330026CK330060CK330075CK330090

-----

28617691127150163176203

26607590125147160173200

ID 19.94mm HT 10.67mm




TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.454cm2 8.95cm 4.01cm2 4.0633cm3

0.0704in2 3.53in 788,500cmil 0.2485in3

Winding Information




121314151617181920

0.2130.1900.1710.1530.1370.1220.1090.09800.0879

273034384349556169

0.005330.007400.01020.01430.01990.02770.03880.05410.0754

212223242526272829

0.07850.07010.06320.05660.05050.04520.04090.03660.0330

778796108121135150168186

0.1050.1480.2060.2880.4040.5690.7891.111.53



Perm.

(μ)

AL

(nH/N2)

CM343026CM343060

--

CM343125CM343147CM343160CM343173

-

CH343026CH343060

--

CH343125CH343147CH343160

--

CS343026CS343060CS343075CS343090CS343125

----

CK343026CK343060CK343075CK343090

-----

163847577993101109126

26607590125147160173200





TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

0.678cm2 8.98cm 3.64cm2 6.0884cm3

0.1051in2 3.54in 719,100cmil 0.3721in3

Winding Information




121314151617181920

0.2130.1900.1710.1530.1370.1220.1090.09800.0879

252932374146525865

0.005790.008090.01120.01570.02200.03060.04290.06000.0837

212223242526272829

0.07850.07010.06320.05660.05050.04520.04090.03660.0330

748292103115129143160177

0.1170.1660.2290.3220.4520.6370.8851.251.71



Perm.

(μ)

AL

(nH/N2)

CM358026CM358060

--

CM358125CM358147CM358160CM358173

-

CH358026CH358060

--

CH358125CH358147CH358160

--

CS358026CS358060CS358075CS358090CS358125

----

CK358026CK358060CK358075CK358090

-----

24567084117138150162187

26607590125147160173200

ID 22.35mm HT 10.46mm




TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

1.072cm2 9.84cm 4.27cm2 10.5485cm3

0.1662in2 3.88in 842,700cmil 0.6449in3

Winding Information




101112131415161718

0.2130.1900.1710.1530.1370.1220.1090.09800.0879

222528313540455057

0.003890.005450.007620.01070.01480.02080.02920.04080.0574

192021222324252627

0.07850.07010.06320.05660.05050.04520.04090.03660.0330

64718090100112125140155

0.08040.1120.1580.2230.3090.4350.6110.8621.20



Perm.

(μ)

AL

(nH/N2)

CM400026CM400060

--

CM400125CM400147CM400160CM400173

-

CH400026CH400060

--

CH400125CH400147CH400160

--

CS400026CS400060CS400075CS400090CS400125

----

CK400026CK400060CK400075CK400090

-----

3581101121168198215233269

26607590125147160173200

ID 24.13mm HT 14.48mm




TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

1.990cm2 10.74cm 4.27cm2 21.373cm3

0.308in2 4.23in 842,700cmil 1.303in3

Winding Information




101112131415161718

0.2130.1900.1710.1530.1370.1220.1090.09800.0879

222528313540455057

0.04880.06880.09660.01360.01890.02670.03750.05260.0740

192021222324252627

0.07850.07010.06320.05660.05050.04520.04090.03660.0330

64718090100112125140155

0.1040.1460.2050.2900.4030.5670.7981.131.57



Perm.

(μ)

AL

(nH/N2)

CM467026CM467060

--

CM467125CM467147CM467160

--

CH467026CH467060

--

CH467125----

CS467026CS467060CS467075CS467090CS467125

----

CK467026CK467060CK467075CK467090

-----

59135169202281330360

--

26607590125147160173200

ID 24.13mm HT 18.03mm




TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

1.340cm2 11.63cm 6.11cm2 15.584cm3

0.208in2 4.58in 1,206,000cmil 0.9526in3

Winding Information




101112131415161718

0.2670.2380.2130.1900.1710.1530.1370.1220.109

263034384348546168

0.005050.007080.00990.01390.01930.02700.03800.05300.0745

192021222324252627

0.09800.08790.07850.07010.06320.05660.05050.04520.0409

778696108120134150168186

0.1040.1460.2050.2900.4020.5650.7951.121.56



Perm.

(μ)

AL

(nH/N2)

CM468026CM468060

--

CM468125CM468147CM468160

--

CH468026CH468060

--

CH468125----

CS468026CS468060CS468075CS468090CS468125

----

CK468026CK468060CK468075CK468090

-----

3786107128178210228

--

26607590125147160173200

ID 28.70mm HT 15.24mm




TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

1.251cm2 12.73cm 7.50cm2 15.929cm3

0.194in2 5.02in 1,484,000cmil 0.9739in3

Winding Information




101112131415161718

0.2670.2380.2130.1900.1710.1530.1370.1220.109

303338434854606876

0.005390.007540.01050.01470.02050.02870.04020.05620.0788

192021222324252627

0.09800.08790.07850.07010.06320.05660.05050.04520.0409

8595107120133149167186207

0.1100.1540.2160.3060.4240.5960.8381.181.64



Perm.

(μ)

AL

(nH/N2)

CM508026CM508060

--

CM508125CM508147CM508160

--

CH508026CH508060

--

CH508125----

CS508026CS508060CS508075CS508090CS508125

----

CK508026CK508060CK508075CK508090

-----

327391109152179195

--

26607590125147160173200

ID 31.75mm HT 13.46mm




TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

2.29cm2 12.5cm 5.14cm2 28.6cm3

0.355in2 4.93in 1,014,049cmil 1.75in3

Winding Information




101112131415161718

0.2670.2380.2130.1900.1710.1530.1370.1220.109

263034394349556270

0.005510.008010.01150.01650.02300.03300.04690.06640.0948

192021222324252627

0.09800.08790.07850.07010.06320.05660.05050.04520.0409

788899111124138156174193

0.1330.1890.2690.3810.5340.7521.071.512.10



Perm.

(μ)

AL

(nH/N2)

CM571026CM571060

--

CM571125CM571147CM571160

--

CH571026CH571060

--

CH571125----

CS571026CS571060CS571075CS571090CS571125

----

CK571026CK571060CK571075CK571090

-----

60138172206287306333

--

26607590125147160173200

ID 26.39mm HT 15.24mm




TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

1.444cm2 14.30cm 9.48cm2 20.65cm3

0.244in2 5.63in 1,871,000cmil 1.261in3

Winding Information




101112131415161718

0.2670.2380.2130.1900.1710.1530.1370.1220.109

374248546068768596

0.006440.009200.01330.01880.02630.03760.05310.07460.107

192021222324252627

0.09800.08790.07850.07010.06320.05660.05050.04520.0409

108120135152169189212237263

0.1520.2110.3000.4280.5960.8451.191.692.35



Perm.

(μ)

AL

(nH/N2)

CM572026CM572060

--

CM572125CM572147CM572160

--

CH572026CH572060

--

CH572125----

CS572026CS572060CS572075CS572090CS572125

----

CK572026CK572060CK572075CK572090

-----

337594112156185200

--

26607590125147160173200

ID 35.56mm HT 13.97mm




TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

3.675cm2 14.37cm 7.73cm2 52.81cm3

0.570in2 5.66in 1,525,610cmil 3.223in3

Winding Information




101112131415161718

0.2670.2380.2130.1900.1710.1530.1370.1220.109

192021222324252627

0.09800.08790.07850.07010.06320.05660.05050.04520.0409



Perm.

(μ)

AL

(nH/N2)

CM610026CM610060

--

CM610125----

CH610026CH610060

--

CH610125----

CS610026CS610060CS610075CS610090CS610125

----

CK610026CK610060CK610075CK610090

-----

83192240288400

----

26607590125147160173200

ID 32.6mm HT 25.0mm



N A N A


TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

5.040cm2 18.38cm 15.25cm2 92.64cm3

0.781in2 7.24in 3,009,310cmil 5.653in3

Winding Information




101112131415161718

0.2670.2380.2130.1900.1710.1530.1370.1220.109

192021222324252627

0.09800.08790.07850.07010.06320.05660.05050.04520.0409



Perm.

(μ)

AL

(nH/N2)

CM740026CM740060

--

CM740125----

CH740026CH740060

--

CH740125----

CS740026CS740060CS740075CS740090CS740125

----

CK740026CK740060CK740075CK740090

-----

89206257309429

----

26607590125147160173200

ID 45.3mm HT 35.0mm



N A N A


TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

1.770cm2 20.0cm 17.99cm2 34.770cm3

0.274in2 7.72in 3,550,000cmil 2.122in3

Winding Information




101112131415161718

0.2670.2380.2130.1900.1710.1530.1370.1220.109

536067768495106119134

0.01130.01620.02280.03250.04540.06460.09120.1290.183

192021222324252627

0.09800.08790.07850.07010.06320.05660.05050.04520.0409

150168188211235263295330365

0.2580.3640.5140.7321.021.301.842.613.62



Perm.

(μ)

AL

(nH/N2)

CM777026CM777060

--

CM777125----

CH777026CH777060

--

CH777125----

CS777026CS777060CS777075CS777090CS777125

----

CK777026CK777060CK777075CK777090

-----

306885102142

----

26607590125147160173200

ID 49.23mm HT 12.70mm




TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

2.270cm2 20.0cm 17.99cm2 43.531cm3

0.352in2 7.72in 3,550,000cmil 2.656in3

Winding Information




101112131415161718

0.2670.2380.2130.1900.1710.1530.1370.1220.109

192021222324252627

0.09800.08790.07850.07010.06320.05660.05050.04520.0409



Perm.

(μ)

AL

(nH/N2)

CM778026CM778060

--

CM778125----

CH778026CH778060

--

CH778125----

CS778026CS778060CS778075CS778090CS778125

----

CK778026CK778060CK778075CK778090

-----

3785107128178

----

26607590125147160173200




N A N A


TORO

IDAL M

AGNETIC POW

DER CO

RES


(A) ( ) (Wa) (V)

1.83cm2 24.10cm 32.92cm2 44,103cm3

0.284in2 9.46in 6,00,140cmil 2.691in3





Winding Information




101112131415161718

0.2670.2380.2130.1900.1710.1530.1370.1220.109

192021222324252627

0.09800.08790.07850.07010.06320.05660.05050.04520.0409



(μ)

AL

(nH/N2)

CM888026CM888060

--

CM888125----

CH888026CH888060

--

CH888125----

CS888026CS888060CS888075CS888090CS888125

----

CK888026CK888060CK888075CK888090

-----

24577185119

26607590125147160173200


N A N A


ID 66.0mm HT 15.9mm


TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

3.522cm2 24.27cm 24.36cm2 85.495cm3

0.546in2 9.56in 4,807,425cmil 5.217in3

Winding Information




0.2670.2380.2130.1900.1710.1530.1370.1220.109

192021222324252627

0.09800.08790.07850.07010.06320.05660.05050.04520.0409



(μ)

AL

(nH/N2)

CM1016026CM1016060 CM1016125

----

CH1016026CH1016060CH1016125

----

CS1016026CS1016060CS1016125

----

CK1016026CK1016060

-----

48112228

----

2660 125147160173200


N A N A

101112131415161718

ID 57.2mm HT 16.5mm



TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

6.71cm2 32.42cm 46.61cm2 217.58cm3

1.040in2 12.77in 9,199,089cmil 13.28in3

Winding Information




101112131415161718

0.2670.2380.2130.1900.1710.1530.1370.1220.109

192021222324252627

0.09800.08790.07850.07010.06320.05660.05050.04520.0409



Perm.

(μ)

AL

(nH/N2)

CM1325026CM1325060CM1325125

----

CH1325026CH1325060CH1325125

----

CS1325026CS1325060 CS1325125

----

CK1325026CK1325060

-----

68156325

2660125147160173200

ID 78.6mm HT 25.4mm



N A N A


TORO

IDAL M

AGNETIC POW

DER CO

RES






(A) ( ) (Wa) (V)

9.46cm2 38.65cm 59.31cm2 365.63cm3

1.466in2 15.22in 11,704,978cmil 22.31in3

Winding Information




0.2670.2380.2130.1900.1710.1530.1370.1220.109

192021222324252627

0.09800.08790.07850.07010.06320.05660.05050.04520.0409



Perm.

(μ)

AL

(nH/N2)

CM1625026CM1625060CM1625125

----

CH1625026CH1625060CH1625125

----

CS1625026CS1625060 CS1625125

----

CK1625026CK1625060

-----

80184 384

----

2660125147160173200

ID 88.9mm HT 25.4mm



N A N A

101112131415161718



Magnetic Powder Cores ::: 62Magnetic Powder Cores ::: 62

SPECIALMAGNETIC

POWDERCORES


ELLIPSE CORES

SPECIAL MAGNETIC PO

WD

ER CORES

• Shorter wire length than rectangular post

• Good DC Bias characteristics

• Larger energy storage capacity

• Low core loss at high frequency

• Choke filter for solar cell inverters

• Boost Inductor for solar cell inverters

Features

Applications

Product Identification

Post Ellipse Cores

Post

Plate

LK3515-20

LK3515-25

LK3520-20

LK3520-25

Part No.

35

35

35

35

15

15

20

20

7.5

7.5

7.5

7.5

20

25

20

25

Dimensions Cross SectionArea(cm2)

ALength(mm)

BWidth(mm)

RCRadius(mm)

DHeight(mm)

LS(Sendust Ellipse Core), LH(High Flux Ellipse Core) and customized designs are also available.

4.77

4.77

6.52

6.52

Plate Ellipse Cores

LK5035-13LK5035-18LK6035-13LK6035-18LK7035-13LK7035-18

Part No.

505060606070

353535353535

7.57.57.57.57.57.5


ALength(mm)

BWidth(mm)

RCRadius(mm)

DHeight(mm)

4.776.524.776.524.776.52

LK 35 15 - 20 C

Height : 20mm

Length : 35mm

Width : 15mm

Mega Flux Ellipse Core LK:Mega Flux , LS:Sendust

Available perm. A:26μ, B:40μ, C:60μ

Available size : 20mm~25mm

Permeability : 60μ

LK 60 35 - 13 C

Height : 13mm

Length : 60mm

Width : 35mm

Ellipse Core LK:Mega Flux



Permeability : 60μ

13.518.513.518.513.518.5



ELLIPSE CORES ASSEMBLY

SPECIAL MAGNETIC PO

WD

ER CORES

PLATEPart No. Part No. 1 LEG

STACK

DimensionsPOSTPath

Length(cm)

Cross Section

Area(cm2)

Window Area(cm2)

AL value (nH/N2) 12%

026μ 040μ 060μ

ALength(mm)

BWidth(mm)

CHeight(mm)

DInner

Height(mm)

LK5035-13

LK5035-18

LK3515-20LK3515-25LK3515-20

LK3520-20LK3520-25LK3520-20

223

223

16.4718.4716.04

18.0420.0422.04

4.774.774.77

6.526.526.52

81012

456

11310191

158141127

146130117

204182164

218195176

306273245

505050

505050

353535

353535

677787

778797

405060

405060

202020

101010

EInner

Length(mm)

LK6035-13

LK6035-18

LK7035-13

LK7035-18

LK3515-20LK3515-25LK3515-20

LK3520-20LK3520-25LK3520-20

LK3515-20LK3515-25LK3515-20

LK3520-25LK3520-20LK3520-25

223

223

223

223

18.4720.4722.47

18.0420.0422.04

20.4722.4724.47

20.0422.0424.04

4.774.774.77

6.526.526.52

4.774.774.77

6.526.526.52

121518

81012

162024

121518

1019183

141127115

918376

127115106

130117107

182164149

11710798

164149136

195176160

273245223

176160147

245223204

606060

606060

707070

707070

353535

353535

353535

353535

677787

778797

677787

778797

405060

405060

405060

405060

303030

202020

404040

303030


BLOCK CORES

SPECIAL MAGNETIC PO

WD

ER CORES

• Large energy storage capacity

• No magnetic flux leakage

• Good temperature stability


• High inductance choke coils

• Flyback transformers

• Multiple circuit choke coils

• Output chokes for SMPS

Features

Applications


BK 6 3 20 - 060

Height : 20mm

Length : 60mm Available size : 50mm~80mm

Width : 30mm

Mega Flux Block Core BH:High Flux, BS:Sendust

Available perm. 26,40,60μ

Available HT : 15mm~20mm

Permeability :60μ

BK5315BK5320BK6315

BK6320BK7315BK7320

BK8315BK8320

Part No.

50.550.560.5

60.570.570.5

80.580.5

Dimensions(mm)

A B C

30.330.330.3

30.330.330.3

30.330.3

152015

201520

1520

BS(Sendust Block Core), BH(High Flux Core) and customized designs are also available.

Cross Section

Area(cm2)

4.56

4.5

64.56

4.56


SPECIAL MAGNETIC PO

WD

ER CORES

BK5315BK5320BK6315BK6320BK7315BK7320BK8315BK8320

UnitPart No.

Assembled(L x W x H mm)

SectionalArea(cm2)

WindowArea(cm2)

Path Length(cm)


026μ 040μ 060μ

80 x 50 x 3090 x 50 x 3090 x 60 x 30100 x 60 x 30100 x 70 x 30110 x 70 x 30110 x 80 x 30120 x 80 x 30

18.7118.2822.7122.2826.7126.2830.7130.28

1524181228214032

33

4.56

4.56

4.56

951307910767915878

1211651001358511574100

181247149203127172110149

BLOCK CORES ASSEMBLY


CYLINDER+ROUND BLOCK CORES

SPECIAL MAGNETIC PO

WD

ER CORES



• Power inductor for large currents

• Buck/ Boost inductor for inverters

Features

Applications


CK30 30 - 060

OD : 30mm

HT : 30mm

Available size 24mm ~ 60mm

Mega Flux Cylinder Core CS : Sendust, CH : High Flux

RBK 54 20 - 15 C

Height : 15mm

Length : 54mm

Width : 20mm

Round Block Core RBK:Mega Flux

CS(Sendust Cylinder Core), CH(High Flux Cylinder Core) and customized designs are also available



Permeability :60μ

Available perm. A:26μ, B:40μ, C:60μPermeability :60μ

Post Cylinder Cores

CK2020CK2424CK2525CK2828CK3030CK3035CK6030

CylinderPart No.

RBK5420-15RBK6424-18RBK6725-19RBK7428-21RBK8030-23RBK8030-23

-

Plate

20242527303060


OD(mm)

2024252730

34.730

HT(mm)

3.144.524.916.007.077.0728.27

Plate Round Block Core

RBK5420-15RBK6424-18RBK6725-19RBK7428-21RBK8030-23

PlatePart No.

CK2020CK2424CK2525CK2828CK3030

Post

5464677480


ALength(mm)

2024252730

BWidth(mm)

10.012.012.513.715.0

RCRadius(mm)

15.718.819.621.723.5

DHeight(mm)

3.144.524.916.007.07

Post

Plate



SPECIAL MAGNETIC PO

WD

ER CORES

RBK5420-15

RBK6424-18

RBK6725-19

RBK7428-21

RBK8030-23

PlatePart No.

CK2020

CK2424

CK2525

CK2828

CK3030

Part No.

123123123123123

1 LEGSTACK

DimensionsCylinderPath

Length(cm)

Cross SectionArea(cm2)

Window Area(cm2)


026μ 040μ 060μ

545454646464676767747474808080

202020242424252525

27.527.527.5303030

51.471.491.461.685.6109.664.289.2114.271.499.4127.4

77107137

204060244872255075285684306090

141414161616171717191919202020

12.4116.4120.4114.7219.5224.3215.4120.4125.4117.1322.7328.3318.424.430.4

3.143.143.144.524.524.524.914.914.916.006.006.007.077.077.07

2.85.68.43.847.6811.524.258.5

12.755.3210.6415.96

61218

997560120907212494751361038315011391

12796771541169316012197176133106193146117

191144116232175140240181146264199160290218175

ALength(mm)

BWidth(mm)

CHeight(mm)

DInner

Height(mm)

EInner

Length(mm)

CYLINDER ASSEMBLY

DC Bais Characteristics



EE CORES

SPECIAL MAGNETIC PO

WD

ER CORES









Features

Applications

ES 43 21 A - 060

Height of E core

Length : 43mm Available size : 19.0mm~80.0mm

Available size : 8.0mm~38.1mmWidth : 21mm

Sendust E core EK:Mega Flux

Available perm. 26, 40, 60, 90μPermeability :60μ

ES 1908AES 2510AES 3015A

ES 3515AES 4117AES 4321A

ES 4321BES 4321CES 5528A

ES 5528BES 6533AES 7228AES 8038A

Part No.

19.325.130.1

34.540.942.8

42.842.854.9

54.965.172.480.0

Dimensions(mm) Path Length(cm)



A B C D(min) E(min) F L(nom) M(min) 026μ 040μ 060μ 090μ

8.19.615.0

14.116.521.1

21.121.127.6

27.632.527.938.1

4.86.57.1

9.312.510.8

15.420.020.6

24.627.019.019.8

5.56.29.7

9.610.415.0

15.015.018.5

18.522.217.828.1

13.918.819.5

25.328.330.4

30.430.437.5

37.544.252.659.3

4.86.17.0

9.312.511.7

11.711.716.8

16.819.719.119.8

2.33.05.1

4.46.05.9

5.95.98.4

8.410.09.59.9

4.76.36.4

7.97.99.5

9.59.510.3

10.312.116.919.8

4.014.856.56

6.947.759.84

9.849.8412.30

12.3014.7013.7018.50

0.2280.3850.601

0.8401.5201.280

1.8302.3703.500

4.1705.4003.6803.890

263933

568856

80104116

138162130103

355246

7511976

108140157

187230173145

487071

102163105

150194219

261300236190

6910092

146234151

217281

EK(Mega Flux EE Core) and customized designs are also available.



EER CORESSPECIAL M

AGNETIC POW

DER CO

RES




• Excellent DC bias characteristics

Features

• Power inductor for large currents



Applications

HER 4013 B-060

Height of EER core


Available size : 7mm~17mmWidth : 13mm

High Flux EER Core KER :Mega Flux , SER : Sendust

Available perm. 26, 40, 60μPermeability :60μ

HER 2507AHER 2507BHER 3010A

HER 3511AHER 3511BHER 4013A

HER 4013BHER 4215AHER 4215B

HER 4917AHER 4917B

Part No.

25.525.530.6

35.035.040.0

40.042.042.0

49.049.0




A B C D E F 026μ 040μ 060μ

9.311.015.8

15.820.717.4

22.422.425.4

18.824.7

7.57.59.8

11.311.313.3

13.315.515.5

17.217.2

7.57.59.8

11.311.313.3

13.315.515.5

17.217.2

19.819.822.0

25.625.629.0

29.029.429.4

36.536.5

6.27.911

9.814.710.4

15.415.418.4

12.218.1

5.105.788.66

8.3010.279.13

11.1310.6411.84

9.5711.93

0.4500.4500.754

1.0781.0781.491

1.4912.0262.026

2.3532.353

393438

574672

598475

9979

534753

786399

81115103

136109

736572

10887

135

111158142

185149

KER(Mega Flux EER Core), SER(Sendust EER Core)and customized designs are also available.


EQ CORES

SPECIAL MAGNETIC PO

WD

ER CORES

• Small dimensions for large currents





• Small dimension DC/DC converters

• Large current choke coils

• Smoothing choke coils

• CPU cores for lap-top computers

Features

Applications


KEQ 41 28A-040

Height of EQ core

Length : 40mm Available size : 21mm~ 65mm

Width : 28mm

Mega Flux EQ core HEQ : High Flux, SEQ : Sendust


KEQ 2014AKEQ 2014BKEQ 2619A

KEQ 2619BKEQ 3222AKEQ 3222B

KEQ 3626AKEQ 4128AKEQ 5032A

Part No.

20.520.526.5

26.532.032.0

36.041.550.0




A B C D E F 026μ 040μ 060μ

14.014.019.0

19.022.022.0

26.028.032.0

8.110.110.1

12.410.315.2

17.419.925.0

8.88.812.0

12.013.513.5

14.414.920.0

18.018.022.6

22.627.627.6

32.036.544.0

5.77.76.8

9.16.611.5

13.415.419.5

4.525.325.47

6.396.037.99

9.4711.5213.34

0.6080.6081.198

1.1981.5231.523

1.8081.9973.141

443772

618362

625777

6857110

9412796

9687118

10186165

141190144

144131178

HEQ(High Flux EQ Core), SEQ(Sendust EQ core) and customized designs are also available.


ER CORESSPECIAL M

AGNETIC POW

DER CO

RES

• Small dimensions for large currents





Features

• Small dimension DC/DC converters

• Large current choke coils

• Smoothing choke coils

• CPU cores for lap-top computers

Applications


RH12 44 SC

Shape Number

Length : 12mm Available size 8mm ~15mm

Height : 4.4mm

High Flux ER core RK : Mega Flux

RH0721SCRH0725SCRH1028SC

RH1034SCRH1237SCRH1244SC

RH1539SCRH1549SC

Part No.

7.67.610.1

10.112.712.7

15.215.2



AL value (nH/N2) 15%A B C D E F

2.12.52.8

3.43.74.4

3.94.9

2.882.883.85

3.854.854.85

5.765.76

6.56.58.65

8.6510.810.8

12.9612.96

1.151.551.75

2.352.453.15

2.353.35

2.822.823.76

3.764.74.7

5.645.64

1.391.551.73

1.972.192.47

2.452.85

0.1170.1170.206

0.2060.3290.329

0.4680.468

37.133.352.3

45.966.158.6

83.972.1

RK(Mega Flux RK core) and customized designs are also available.


U CORES

SPECIAL MAGNETIC PO

WD

ER CORES




• Low core loss at high frequencies





Features

Applications


UK 41 41 C-060

Height of U core


Available size : 36mm~ 65mmWidth : 41mm

Mega Flux U core UH : High Flux, US : Sendust


UK3536AUK3536BUK4141A

UK4141BUK4141CUK5251A

UK5251BUK6361AUK6361B

UK7965AUK7965B

Part No.

35.035.041.0

41.041.052.0

52.063.063.0

79.079.0

Dimensions(mm) Cross Section

Area(cm2)


A B C D E F 026μ 040μ 060μ

36.036.041.0

41.041.051.0

51.060.560.5

64.564.5

20.025.020.0

25.030.025.0

30.030.035.0

30.035.0

25.025.028.0

28.028.035.0

35.041.541.5

42.542.5

13.013.015.0

15.015.020.0

20.025.025.0

35.035.0

11.011.013.0

13.013.016.0

16.019.019.0

22.022.0

2.2002.7502.600

3.2503.9004.000

4.8005.7006.650

6.6007.700

PathLength(cm)

16.9016.9019.30

19.3019.3024.30

24.3029.1029.10

32.6032.60

435344

556654

656475

6677

658268

8510283

9998115

102119

98123102

127152124

149148172

153178

UH(High Flux U Core), US(Sendust U Core) and customized designs are also available.


WASHER CORESSPECIAL M

AGNETIC POW

DER CO

RES

• High permeability powder cores• Low core loss at high frequencies • High efficiency washer cores • Minimum magnetic flux leakage• Excellent DC bias characteristics• Good temperature stability• Large energy storage capacity

Features

• Choke coil for mobile phones• Inductor for handheld devices• Power Inductor for PDA, LCD

Applications


DM 3508PDM 3510P

DM 3908PDM 3910PDM 3912P

DM 4610PDM 4612PDM 4614P

DM 6310PDM 6312P

3.56 1.780.81.0

1417

0.8175.66.8

3.3, 4.7, 6.8,10

3.94 2.240.81.01.2

111417

0.9424.45.66.8

3.3, 4.7, 6.8, 10,15, 22

4.65 2.361.01.21.4

162022

1.0606.48

8.8

3.3, 4.7, 6.8, 10,15, 22

6.35 3.791.01.2

1822

1.361 8.84.7, 6.8,10,15, 22, 33, 47, 56

Part No.Core Dimensions(mm)

Before Finish

OD ID HTAL value (nH/N2) 12%

Path Length(cm)

TypicalInductance

L 0A, 20T( H)

RecommendedInductanceL( H) at 0A

Washer Core DM : Washer MPP Core

DM 46 12 P

Parylene - C coated

OD size : 4.6mm Available size : 3.5mm~ 6.3mm

Available HT 0.8mm~ 1.2mmHeight : 1.2mm

75 ::: Changsung Corporation


CS 16 25 026 E

Perm. : 26μ

OD size : 165mm Available size : 101.6mm~ 165.0mm

Available HT 13.6mm~ 40.6mmHeight : 25mm

Sendust Core CM : MPP, CH : High Flux, CK : Mega Flux

E : Epoxy, C : Plastic case, U : uncoated

Available perm. 26, 50, 60,125μ

Epoxy coated

CSC’ big toroidal cores produced by a 3000 ton press are ideal for high current applications, especially in UPS, renewable energy(solar/wind),

high power industrial power systems. The maximum diameter is 165mm(6.5”)OD and the electrical characteristics are the same as small toroidal cores.

CSC cores are the world’s biggest and strongest on the market today.

CS1013CS1016CS1027

CS1033CS1320CS1325

CS1333CS1340CS1625

Part No.Before Finish Dimensions(mm) After Finish Dimensions(mm) Weight

(g)

Path Length(cm)


AL value (nH/N2) 8%

OD(mm) Max ID(mm) Min HT(mm) Max OD(mm) Max ID(mm) Max HT(mm) Max 026μ 060μ 125μ

101.6101.6101.6

101.6132.5132.5

132.5132.5165.0

57.257.257.2

57.278.678.6

78.678.688.9

13.616.527.2

33.020.325.4

33.040.625.4

103.1103.1103.1

103.1134.2134.2

134.2134.2167.2

55.755.755.7

55.77777

7777

86.9

14.917.828.5

34.321.726.8

34.442

27.3

548.6665.61097.3

1331.31280.11601.7

2080.92560.22808.0

24.2724.2724.27

24.2732.4232.42

32.4232.4238.65

2.9723.5225.944

7.0445.3476.710

8.71710.6949.460

404780

945468

8810880

92112184

224124156

202248184

192228384

456259325

422518384

CM(MPP core), CH(High Flux core), CK(Mega Flux core) and customer specifications are also available.

BIG TOROIDAL CORES

SPECIAL MAGNETIC PO

WD

ER CORE


• Near zero magneto-striction coefficient constant


• Power factor correction(PFC) circuits

• Power inductors for large currents

• AC Reactors for inverters

Features

Applications




AL Value (nH/N2) The inductance (nanohenries) of a core for 1 turn winding. It is measuredat peak AC flux density of 10 gauss and frequency of 10kHz. 1nH/N2 =1mH/(1000turns)2

Ambient Temperature Temperature surrounding the devices or circuits. The ambient temperatureis measured at 0.5inch(1.27cm) away from the devices or circuits.

AttenuationThe ratio of output parameter (voltage, current, power, etc.) to inputparameter. Unit is [dB]. In the case of power, dB is10log (output power /input power). In the case of current and voltage, dB is 20log (outputcurrent /input current), 20log (output voltage / input voltage)respectively.

Coercive Force (Hc) Refer to Hysteresis Curve.

Common-Mode NoiseElectrical interference that is common to both lines in relation to theground.

Copper Loss [watts] The power loss (I2R) or heat generated by current (I) flowing in a windingwith resistance (R).

Core loss [watts] Core loss is composed of eddy current loss, hysteresis loss and residualloss. Refer to Magnetic Design Formulae.

Cross Sectional Area (A) The effective cross sectional area of a core available for magnetic flux.The cross sectional area listed for toroidal cores is based on bare coredimensions.

Curie Temperature, Tc [ ]The transition temperature above which a core loses its ferromagnetic properties. Usually defined as the temperature at which i

falls to 10% of its room temperature value.

DC Resistance [ ] Resistance of winding when AC current is not applied.

Differential Mode Noise Electrical interference that is not common to both lines but is present between both lines. This is also known as normal mode noise.

DisaccommodationThe proportional change of permeability after a disturbance of amagnetic material. It is measured at a constant temperature over a giventime interval.

Distributed CapacitanceIn an inductor, each winding behaves as a capacitor having thedistributed capacitance. Distributed capacitance is parallel with

inductance in the circuit and causes self-resonance at a certainfrequency. An inductor which has a smaller distributed capacitanceextends a much higher self resonant freguency. So the inductor shouldbe wound to have as small a distributed capacitance as possible.

Eddy CurrentWhen a varying electric or magnetic fieldpasses through the conducting material,current which opposes the change of fieldis induced in it. This current is called eddycurrent. Because a conducting materialhas electric resistance, the eddy currentresults in heat loss. This is referred to asthe eddy current loss.

Effective Permeability (μe) Refer to Permeability.

EMIThe acronym for Electromagnetic Interference is EMI. Generally, EMI refers to unnecessary electrical energies such as noise.

EMC Electromagnetic Compatibility

Hysteresis Curve (B-H Loop)

When the magnetic material is taken through a complete cycle ofmagnetization and demagnetization, the magnetic flux density in thatmaterial behaves irreversibly according to the change of the magnetizingforce.

The results are as shown in Figure 2. As H is increased in the neutralmagnetic material, flux density B increases along the dashed line (initialmagnetization curve) to the saturation point, Bs.

Figure 1. Eddy Current in Powder Cores

Figure 2. B-H Loop

Terminology

Metal Powder

Ceramic Layers

Eddy Current


When H is now decreased, the B-H loop transverses a path to Br(remanent flux density), where H is zero and the core is still magnetized.The magnetizing force H is now reversed to give a negative value. Themagnetizing force required to reduce the flux Br to zero is called thecoercive force(Hc). Along the initial magnetization curve, B increasesfrom the origin nonlinearly with H until the material saturates. Inpractice, the magnetization of a core in an excited inductor never followsthis curve because the core is never in a totally demagnetized statewhen the magnetizing force is first applied.

Flux Density, Magnetic Induction, B [Gauss ; Tesla]The corresponding parameter for the induced magnetic field in an areaperpendicular to the flux path. Flux density is determined by the fieldstrength and permeability of the medium in which it is measured.1T=104 Gauss

Incremental Permeability( μ) Refer to Permeability.

InductorA passive device that prevents a variance of the current. Magnetic flux isinduced in the inductor when current flows through the inductor, andthe voltage induced by magnetic flux prevents the change of current.Induced voltage

= L di/dt.

Initial Permeability(μi) Refer to Permeability.

Leakage Flux Leakage flux is the small fraction of the total magnetic flux in atransformer or common mode choke that does not contribute to themagnetic coupling of the windings of the device. The presence ofleakage flux in a transformer or common mode choke is modeled as a small "leakage" inductance in series with each winding. In a multi-winding choke or transformer, leakage inductance is the inductance measured at one winding with all otherwindings short circuited.

Litz WireA wire made by twisting and bundling some insulated wire.It can decrease the copper loss at high frequency by reducing the skin effect.

Magnetic Hysteresis Refer to Hysteresis Loop.

Magnetizing Force, H [Oe ; A/m]The magnetic field strength which produces magnetic flux. The mmf perunit length. H can be considered to be a measure of the strength oreffort that the magnetomotive force applies to magnetic circuit toestablish a magnetic field. H may be expressed as H=NI/ , where isthe mean length of the magnetic circuit in meters. 1 oersted=79.58A/m

Mean Magnetic Path Length( )The effective magnetic path length of a core structure (cm).Refer to Magnetic Design Formulae.

Normal Mode Noise Refer to Differential Mode Noise.

NoiseUnnecessary electrical energy that rises in a circuit.

Operating Temperature Range The temperature at which a device can be operated normally. Above thistemperature, the characteristics of the device can become inferior or thedevice may operate abnormally. In the case of the inductor, thistemperature refers to the temperature rise by the copper loss or coreloss. Refer to temperature rise.

Permeability(μ) In magnetics, permeability isthe ability of a material toconduct flux. The magnitudeof the permeability at a giveninduction is a measure of theease with which a core material can be magnetized tothat induction. It is defined asthe ratio of the flux density Bto the magnetizing force H.

Permeability : μ = B/H [Gauss/Oersted]

The slope of the initial magnetization curve at any given point gives thepermeability at that point. Permeability can be plotted against a typical B-H curve as shown in Figure 3 Permeability is not constant, therefore itsvalue can be stated only at a given value of B or H. There are manydifferent kinds of permeability.

Absolute Permeability(μo) Permeability in a vacuum

Initial Permeability(μi)Slope of the initial magnetization curve at theorigin, that is, the value ofpermeability at a peak AC fluxdensity of 10 gauss (1 millitesla).

μ= B/H (Figure 4)

Incremental Permeability( μ)The slope of the magnetization curve for finite values of peak-to-peakflux density with superimposed DC magnetization(Figure 5). Initialpermeability can be thought of as incremental permeability with 0 DCmagnetization at small inductions. The incremental permeability isexpressed as the slope of the B-H characteristic at around the given operating point.

Figure 3. Variation of along the Magnetization Curve

Figure 4. Initial Permeability

Terminology


Effective Permeability( )If a magnetic circuit is not homogeneous(i.e. contains an air gap), theeffective permeability is the permeability of a hypotheticalhomogeneous(ungapped) structure of the same shape, dimensions, and reluctance that would give the inductance equivalent to the gapped structure.

Relative Permeability( )Permeability of a material relative to that of free space.

Maximum permeability( )The slope of a straight linedrawn from the origin tangentto the curve at its knee. (Figure 6)

Rated Current Continuous DC current that can flow in the inductor.It is determined by the maximum temperature rise at the maximumstorage temperature range. As rated current is related to power loss ofthe inductor, DC resistance of the inductor should be lowered or theinductor size should be increased in order to increase the ratedcurrent.

Saturation Current The current at which the inductance decreases below a critical percentinductance (10% or 20% of the initial inductance) by applying DCcurrent to an inductor. In general the critical percent inductance is 10%for ferrite cores and 20% for metal powder cores. The decrease ofinductance is caused by the magnetic characteristics of cores.Cores can store a certain amount of flux density, but above that fluxdensity the permeability and inductance of the cores decrease.

Self Resonant Frequency, SRF The frequency at which the resonance appears between distributedcapacitance and inductance of an inductor. At this frequency, inductance and capacitance are canceled out and the inductor isalmost a resistor having high impedance. Distributed capacitance that

arises between wires and between wires and cores is parallel withinductance in circuits. Above the self resonant frequency, the capacitive reactance is dominant and the inductor works like thecapacitor.

Skin Effect As the frequency is higher, the current flow is limited to the surface ofthe wire because the magnetic field in the center of the wire increases.The depth from the wire surface at which the current density at thewire surface decreases by 1/e (37%) is called "skin depth", and this isdetermined by the conductivity of the wire. As the frequency is higher, skin depth decreases, the reactance of wire increases andcurrent flow is interfered. Litz wire may be used in order to decreasethe skin effect.

Storage Temperature Range Temperature range in which the characteristics of a device can bepreserved.

Remanence, Br [Gauss ; Tesla] Refer to Hysteresis Curve.

SaturationThe point at which the flux density B in a magnetic material does notincrease with further applications of greater magnetization force H. Atsaturation, the slope of a material's B-H characteristic curve becomesextremely small, with the instantaneous permeability approaching that of free space. (relative permeability = 1.0)

Saturation Flux Density, Bs [Gauss ; Tesla] The maximum intrinsic induction possible in a material. This is the flux level at which additional H-field produces no additional B-field.

Temperature Rise( T) The increase in surface temperature of a component in free-standing air due to the total power dissipation(both copper and core loss). Approximate temperature rise is as follows ;

Total Power Dissipation(Miliwatts)

Surface Area( )

0.833

=

Total Power Dissipation= Copper Losses + Core Losses

=

Figure 5. Incremental Permeability

Figure 6. Maximum Permeability

Terminology

Innovative TechnologicalAdvancements

Special Shaped Magnetic Powder Cores

www.changsung.com


Chang Sung Corporation has become a global leader through its outstanding R&D center, which isconstantly striving to develop new technologies and products. In particular, CSC magnetic powdercores have raised the company’s profile and competitiveness in the world market.

Research &Development

81 ::: Changsung Corporation

RESEARCH AND DEVELOPMENT

B-H AnalyserB-H Loop TracerDC Bias TracerPrecision LCR MeterAC Power SupplyElectrical LoadOscilloscopePuncture TesterVibrating Sample Magnetometer (VSM)PFC Test KitImpedance AnalyserScanning Electron Microscope (SEM)Optical MicroscopeLaser Particle Size AnalyserSpecific Surface Area Analyser (BET)Oxygen / Nitrogen AnalyserAtomic Absorption SpectrophotometerHeat Treating FurnacesOptical Emission SpectrometerElectrolysis AnalyserThermal Analysis Equipment (DSC, TG, DTA)Constant Temperature & Humidity ChamberUniversal Testing Machine (UTM)Hardness Testers, etc.

EQUIPMENT


The CSC product line is constantlyevolving and improving throughour highly advanced R&D centerequipped with the most modernresearch facilities.

VSM

BET

Anechoic Chamber

SEM

B-H LOOP

LCR

AC Power Supply

MA

GN

ETIC PO

WD

ER CO

RESISO/TS 16949

KS Q/ISO 14001OHSAS 18001

CO

-130120

Offices and Factories in Korea

Headquarters & Incheon Factory620-8 Namchon-dong, Namdong-gu, Incheon, KoreaTel: 82-32-450-8770 Fax: 82-32-450-8870

International Business Center4FL, Kukje Bldg, 127-1, Nonhyun-dong, Kangnam-gu, Seoul, KoreaTel: 82-2-512-3793 Fax: 82-2-512-3214

Pyeongtaek Factory148-40, Goryeom-ri, Cheongbuk-myeon, Pyeongtaek-si, Gyeonggi-do, KoreaTel: 82-31-683-2466 Fax: 82-31-683-2465

Cheongju Factory8-8 Poongjung-ri, Naesu-eup, Cheongwon-gun, Chungbuk, KoreaTel: 82-43-213-8801 Fax: 82-43-213-8807

Offices and Factories Overseas

ChinaWeihai FactoryChangxing Road, First Industrial Complex, Huanshan RD, Economic Technological Development Zone, Weihai City, Shandong Province, ChinaTel: 86-631-596-5931 Fax: 86-631-596-8160

Dongguan FactoryHuangkeng Industrial Area, Shilongkeng Village, LiaoBu Town, Dongguan City, Guangdong Province, ChinaTel: 86-769-8352-1800 Fax: 86-769-8352-1803

JapanTokyo OfficeBansui Ken Bldg, 5F, Toranomon 1-6-6, Minato-Ku Tokyo, Japan 105-0001Tel: 81-3-5512-5380 Fax: 81-3-5501-3234

Documents

MAGNETIC POWDER CORES - MH&W International Corp. · MAGNETIC POWDER CORES TECHNICAL DATA Comparison of Core materials Perm. ( ) Bs (G) Core Loss DC Bias Relative Cost Temp. Stability