EMI Cores ESD-SR Snap-on Cores for Round Cables for Low & … · 2019. 10. 12. · ESD-SR Snap-on Cores for Round Cables for Low & High Frequency (with case) Benefits • MnZn ≤

1© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard E5005_ESD-SR • 9/17/2018Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com

One world. One KEMET

EMI Cores

ESD-SR Snap-on Cores for Round Cables for Low & High Frequency (with case)

Benefits

• MnZn≤10MHz(AMbandrange)andNiZn≤300MHz (FMbandrange)optionsavailable

• Split construction• Easytoinstallthroughitssnap-onmecanism• Quicksolutionforpost-cableassemblynoiseissue• Operatingtemperaturerangefrom−25°Cto+85°C• UL94V–0flameretardantratedcase

Overview

The KEMET ESD-SR Series snap-on toroidal cores are designedforuseonroundcables.ThewiderangeofManganeseZinc(MnZn)andNickelZinc(NiZn)optionsallowsfortargetingofspecificfrequencyranges.

EMI cores are part of a family of passive components which addresstheissuesofnoiseorelectromagneticinterference(EMI)incircuitsorsystems.

Applications

• Consumer electronics• Airconditioners• Power conditioners• Refrigerators• Washingmachines• Industrialequipment• Medicalequipment• Adapters• Audio-visualequipment• Business multifunction printers


EMI Core – ESD-SR Snap-on Cores for Round Cables for Low & High Frequency (with case)

Part Number System

ESD- SR- S 38 G

Series Form Type Shape typeCoreSize

OuterDimensionCode(mm)Case Color

ESD- Snap-on Blank = Sleeve S=Ring

SeeTable1 Blank = Black G = Gray Note: M=Black(Mn-Zn)

Turns and Impedance CharacteristicsWhenthedesiredperformanceofanEMIcorecannotbeobtainedwithasinglepassthroughthecore,theimpedancecharacteristicscanbechangedwithmultipleturns.

Aturniscountedbythenumberoflead-wirewindingswhichpassthroughtheinnerholeofthecore.Windingsontheoutsideofthecore do not count.

SeeFigure1forexamplesofone,two,andthreeturns.

Addingturnswillresultinhigherimpedancewhilealsoloweringtheeffectivefrequencyrange.

SeeFigure2foranexample.

Core Material and Effective Frequency RangeThere are two ferrite material options for KEMET EMICores:NickelZinc(Ni-Zn)andManganeseZinc(Mn-Zn).Eachcorematerialhasadifferentresistanceandeffectivefrequencyrange.TheMnZn core material has a lower resistance comparedtotheNi-Zn;therefore,adequateinsulationisrequiredbeforeuse.

TheNi-ZncorematerialistypicallyeffectiveforfrequenciesintheMHzbandrangesuchastheFM-band,whiletheMn-ZncorematerialistypicallyeffectiveforthekHzbandrangesuchastheAM-band.SeeFigure3.

It is recommended to measure the actual frequencyrangeeffectivenessinthetargetapplication.

3T2T1T

Figure 1 – How to count turns

Impe

danc

e In

crea

seResonance point changes to lower band

3T

2T

1T

Impe

danc

e (Ω

)

Frequency (MHz)

10,000

1 10 100 1,000

1,000

100

10

1

Figure 2 – Relationship between impedance and turn count. (Representative example: ESD-R-16C)

Impe

danc

e (Ω

)

Frequency (MHz)

AM band range FM band range

Mn-Zn series core

Ni-Zn series core

1,000

100

10

10.01 0.1 1 10 100 1,000

Figure 3 – Effective band range of Mn-Zn and Ni-Zn ferrite core material. (Representative example, measured with same-dimension ring core)



Magnetic Permeability of Ferrite Material

Inordertoachievemostefficientnoisereduction,itisimportanttoselectthematerialaccordingtothetargetfrequencyband.Dependingonitsmagneticpermeability,aparticularferritematerialwillbeeffectiveinacertainfrequencyband.AschematicrepresentationoftherelationshipbetweenthemagneticpermeabilityofeachmaterialandthecorrespondingeffectivebandrangeisshowninFigure1.Materialswithhighermagneticpermeabilityareeffectiveinthelowerfrequencyrange,whilethosewithlowermagneticpermeabilityareeffectiveinthehigherfrequencyrange.Thus,Mn-Znproductsaremainlyusedforreducingconductionnoise,whileNi-Znproductsarecommonlyusedforradiationnoisecountermeasures.

Theeffectivefrequencyrangevariesdependingoncoreshape,sizeandnumberofwindings.Thisfrequencydependenceofthemagneticpermeabilityasshowninthefigureservesforreferencepurposesonlyanditshouldbetestedontheactualdevice to determine its effectiveness.

S18H,S15H,10H,7H,5H,1400Land700LareKEMET’sproprietaryferritematerialnames.Othermaterialscanalsobeavailableonrequest.

Figure 4 - Relationship between the magnetic permeability of each material and its effective frequency range

10 kHz0

10,000

20,000

100 kHz 1 MHz 10 MHz 100 MHz 1 GHz

Effective Frequency Range

Mag

netic

Per

mea

bilit

y

Ni-Zn Series

1400L700L

S18H

S15H

10H

7H

5H

Mn-Zn Series

Lower magnetic permeability:Higher noise suppression effectin the higher frequency range

Higher magnetic permeability:Higher noise suppression effectin the lower frequency range



Environmental Compliance

AllKEMETEMIcoresareRoHScompliant.

Dimensions – Millimeters

B

A

ØD

C

ESD-SR Type

CØD

A

ESD-SR-S-M Type

B

A

ØD

C

ESD-SR-S Type

See Table 1 for dimensions



Installation Example ESD-SR & ESD-SR-S

TypesESD-SR-S-M

Type

Performance Characteristics

Item Performance CharacteristicsOperatingtemperature −40°Cto+85°CFrequencyrange LowfrequencyandhighfrequencyOuter diameter 14.4 – 64.0 mmInner diameter 5.0 – 35.0 mmThickness 15.5 – 39.0 mmType CaseCaseflameresistantrating UL94 V–0Material MnZn5HandNiZn700L

Table 1 – Ratings & Part Number Reference

Part Number

Dimensions (mm) WeightCase Color

Frequency Range1 Material

A B Maximum C ØD (g) ≤ 10 MHz

(AM band range)≤ 300 MHz

(FM band range) MnZN NiZn

ESD-SR-100 16.5Maximum 16.5 21.0Maximum ≤6.0 7.2 Black X – 700LESD-SR-100G 16.5Maximum 16.5 21.0Maximum ≤6.0 7.2 Gray X – 700LESD-SR-110 14.4Maximum 14.2 28.0Maximum ≤5.0 6.9 Black X – 700L

ESD-SR-110G 14.4Maximum 14.2 28.0Maximum ≤5.0 6.9 Gray X – 700LESD-SR-S10 15.5Maximum 14.0 18.5Maximum ≤6.0 4.1 Black X – 700LESD-SR-120 16.0Maximum 16.4 33.0Maximum ≤6.0 13.3 Black X – 700L

ESD-SR-120G 16.0Maximum 16.4 33.0Maximum ≤6.0 13.3 Gray X – 700LESD-SR-150 19.6Maximum 20.3 37.4Maximum ≤7.0 23.4 Black X – 700L



ESD-SR-250G 31.5Maximum 31.6 38.0Maximum ≤13.0 59.5 Gray X – 700LESD-SR-S16 23.0Maximum 20.0 20.5Maximum ≤8.0 12.9 Black X – 700LESD-SR-S25 33.0Maximum 29.0 15.5Maximum ≤14.5 21.3 Black X – 700L

ESD-SR-S10M 15.5Maximum 14.0 18.5Maximum ≤6.0 4.1 Beige X 5H –ESD-SR-S38M 44.0 ±1.0 - 16.5 ±1.0 18.0 58.0 Black X 5H –ESD-SR-S47M 53.0 ±1.0 - 19.0 ±1.0 26.0 89.0 Black X 5H –ESD-SR-S57M 64.0 ±1.0 - 24.0 ±1.0 35.0 159.0 Black X 5H –

1 Frequency range is for reference only. Please test with actual device before use.



Impedance vs. Frequency



Impedance vs. Frequency cont.



Impedance vs. Frequency cont.



Packaging

Part Number Packaging Type Pieces per BoxESD-SR-100

Tray

900ESD-SR-100GESD-SR-110

ESD-SR-110GESD-SR-S10 800ESD-SR-120



ESD-SR-160GESD-SR-250

60ESD-SR-250GESD-SR-S16 280ESD-SR-S25 200

ESD-SR-S10M 800ESD-SR-S38M

72ESD-SR-S47MESD-SR-S57M 36

Handling Precautions

EMICoresshouldbestoredinnormalworkingenvironments.WhiletheEMICoresthemselvesarequiterobustinotherenvironments,avoidexposuretohightemperatures,highhumidity,corrosiveatmospheresandlongtermstorageforcase,snap-on and split types.

KEMETrecommendsthatmaximumstoragetemperaturenotexceed40°Candmaximumstoragehumiditynotexceed75%relativehumidity.Atmospheresshouldbefreeofchlorine,sulfurandalkalibearingcompounds.Avoidalsostoragenearstrongmagneticfieldsasthismightmagnetizetheproduct.

Temperaturefluctuationsshouldbeminimizedtoavoidcondensationorcracksontheparts.Mechanicalshockscanbringto cracks as well.

Export Control

For customers in JapanForproductsthatarecontrolleditemssubjecttothe“ForeignExchangeandForeignTradeLaw”ofJapan,theexportlicensespecifiedbythelawisrequiredforexport.

For customers outside JapanEMICoreproductsshouldnotbeusedorsoldforuseinthedevelopment,production,stockpilingorutilizationofanyconventionalweaponsormass-destructiveweapons(nuclearweapons,chemicalorbiologicalweapons,ormissiles),oranyother weapons.



KEMET Electronics Corporation Sales Offi ces

Foracompletelistofourglobalsalesoffices,pleasevisitwww.kemet.com/sales.

DisclaimerAllproductspecifications,statements,informationanddata(collectively,the“Information”)inthisdatasheetaresubjecttochange.ThecustomerisresponsibleforcheckingandverifyingtheextenttowhichtheInformationcontainedinthispublicationisapplicabletoanorderatthetimetheorderisplaced.AllInformationgivenhereinisbelievedtobeaccurateandreliable,butitispresentedwithoutguarantee,warranty,orresponsibilityofanykind,expressedorimplied.

StatementsofsuitabilityforcertainapplicationsarebasedonKEMETElectronicsCorporation’s(“KEMET”)knowledgeoftypicaloperatingconditionsforsuchapplications,butarenotintendedtoconstitute–andKEMETspecificallydisclaims–anywarrantyconcerningsuitabilityforaspecificcustomerapplicationoruse.TheInformationisintendedforuseonlybycustomerswhohavetherequisiteexperienceandcapabilitytodeterminethecorrectproductsfortheirapplication.AnytechnicaladviceinferredfromthisInformationorotherwiseprovidedbyKEMETwithreferencetotheuseofKEMET’sproductsisgivengratis,andKEMETassumesnoobligationorliabilityfortheadvicegivenorresultsobtained.

AlthoughKEMETdesignsandmanufacturesitsproductstothemoststringentqualityandsafetystandards,giventhecurrentstateoftheart,isolatedcomponentfailuresmaystilloccur.Accordingly,customerapplicationswhichrequireahighdegreeofreliabilityorsafetyshouldemploysuitabledesignsorothersafeguards(suchasinstallationofprotectivecircuitryorredundancies)inordertoensurethatthefailureofanelectricalcomponentdoesnotresultinariskofpersonalinjuryorpropertydamage.

Althoughallproduct–relatedwarnings,cautionsandnotesmustbeobserved,thecustomershouldnotassumethatallsafetymeasuresareindictedorthatothermeasuresmaynotberequired.

KEMET is a registered trademark of KEMET Electronics Corporation.

Documents

EMI Cores ESD-SR Snap-on Cores for Round Cables for Low & … · 2019. 10. 12. · ESD-SR Snap-on Cores for Round Cables for Low & High Frequency (with case) Benefits • MnZn ≤