MWS Wire Industries, 31200 Cedar Valley Drive, Westlake Village, CA 91362 • Phone: 818-991-8553 • Fax: 818-706-0911 • www.mwswire.com

MicrosquareTM

Magnet Wire

Miniature square and rectangular magnet wire for specialty coil and motor windings.

When product miniaturization calls for tighter dimensional specifications, MWS Microsquare film-coated magnet wire allows design engineers to create compact coils and small motors that deliver more power in less space.

Microsquare means miniature square and rectangular, copper and aluminum magnet wire. Custom-produced by MWS in sizes smaller than 14 AWG or 3500 sq. mil. cross-sectional area, Microsquare is available in a wide range of solderable and high-temperature insulations and a variety of colors, with or without bondable overcoats. See pages 2 and 3 for information on film insulations and pages 8 and 9 for information on bondable overcoats. Microsquare magnet wire was developed to provide improved winding uniformity and maximum use of space.

Part Number Ordering System — Make your own part number by following the guidelines outlined below

Product Letter

For all Microsquare magnet wire

Square AWG Size

From chart. Use 88 for special square size. Use 99 for rectangular sizes.

Conductor Material

1 = Copper2 = Aluminum9 = special

Insulation Build

1 = single2 = heavy3 = triple4 = quadruple9 = special

Insulation Type*

1 = Polyurethane - 155 / 1802 = Poly-Nylon - 155 / 1803 = Polyester - 1804 = Polyester - 2005 = Polyurethane Bondable6 = Solderable Polyester - 1807 = Formvar8 = ML 9 = special

Color Code

1 = natural2 = green3 = red4 = blue9 = special

Thermal Class

For Poly and Poly-Nylon insulations specify 155 or 180 thermal class

M 22 1 1 2 1 (155)

EXAMPLE = 22 AWG - Square Copper - Single Poly-Nylon 155°C - NaturalNOTE: For part numbers starting with 88 or 99, please show wire dimensions after basic part number.

*See pages 2 and 3 for a complete listing of insulations. MicrosquareTM is a trademark of MWS Wire Industries

#28 Square Copper Insulated, with polyester base coat and epoxy bondable topcoat.

Cross Section at 100X

Print Revision May 2016

14

MicrosquareTM Magnet Wire

15

15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

31752495198315691234982781619489383307245194153124977762493830

.0571

.0508

.0453

.0403

.0359

.0320

.0285

.0253

.0226

.0201

.0179

.0159

.0142

.0126

.0113

.0100

.0089

.0080

.0071

.0063

.0056

2.6013.2814.1355.2256.5708.302

10.4613.1716.6021.0626.0032.8641.4352.5165.8383.62

104.0132.7167.5207.4263.3

2.7613.4834.3905.5466.9758.685

10.9413.7817.3722.0326.8133.8842.7354.1567.8986.24

107.2136.9172.8213.8271.5

2.8013.5344.4535.6277.0768.845

11.1514.0317.6922.4427.6234.9144.0255.7969.9488.85

110.5141.0178.0220.3279.8

.010"

.010"

.009"

.008"

.008"

.007"

.006"

.005"

.005"

.005"

.004"

.003"

.003"

.0025"

.002"

.002"

.0015"

.0015"

.001"

.001"

.001"

± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±

SIZE(AWG)

SIZE(AWG)

MIN. NOM. MAX.NOM.

CORNER RADIUS SQ. MIL AREARESISTANCE

(OHMS PER 1000 FT. AT 20°C)BARE DIMENSION

(INCHES) BARE WIRE TOLERANCE*

15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

3175249519831569123498278161948938330724519415312497

.0571

.0508

.0453

.0403

.0359

.0320

.0285

.0283

.0226

.0201

.0179

.0159

.0142

.0126

.0113

.0100

4.1345.2106.5668.294

10.4313.1816.6420.8626.3733.4141.9852.9966.8284.74

106.2134.8

4.26245.3726.7228.554

10.7613.6017.1621.5227.1934.4543.3054.6568.9087.38

109.6139.0

4.3935.5356.9778.813

11.0814.0117.6822.1728.0235.5044.6156.3070.9990.03

112.9143.2

.010"

.010"

.009"

.008"

.008"

.007"

.006"

.005"

.005"

.005"

.004"

.003"

.003"

.0025"

.002"

.002"

SIZE(AWG)

SIZE(AWG)

MIN. NOM. MAX.NOM.

CORNER RADIUS SQ. MIL AREARESISTANCE

(OHMS PER 1000 FT. AT 20°C)BARE DIMENSION

(INCHES) BARE WIRE TOLERANCE*

Aluminum

Minimum and maximum overall dimensions will be the same as those for the equivalent round size.

EXAMPLE: 22 square heavy build: MINIMUM O.D. = .0271” MAXIMUM O.D. = .0281"

*Conformance to dimensional tolerance is based on the average of at least three measurements per axis using a minimum 12” sample length.Individual measurements outside the tolerance limits will not be cause for rejection.

Copper

.0005"

.0005"

.0005"

.0005"

.0005"

.0004"

.0004"

.0004"

.0004"

.0003"

.0003"

.0003"

.0003"

.0003"

.0003"

.0003"

.0002"

.0002"

.0002"

.0002"

.0002"

.0005"

.0005"

.0005"

.0005"

.0005"

.0004"

.0004"

.0004"

.0004"

.0003"

.0003"

.0003"

.0003"

.0003"

.0003"

.0003"

± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±

MWS Wire Industries, 31200 Cedar Valley Drive, Westlake Village, CA 91362 • Phone: 818-991-8553 • Fax: 818-706-0911 • www.mwswire.com Print Revision May 2016