Multifilar® Magnet Wire

Parallel bonded magnet wire for more consistent capacitance and impedance characteristics.

Where constant alignment of multiple strands is an advantage, Multifilar® magnet wire is the right choice. Its parallel-bonded, color-coded construction offers benefits for many applications.

Engineers should specify Multifilar® when concerned with space, weight, and reliability. Where consistent capacitance and impedance characteristics are required, Multifilar® magnet wire outperforms windings using two separate magnet wires.

Production users benefit from increased layer winding speeds, tighter windings that deliver more power in less space, reduced labor and handling. Color coding assists in conductor identification and reduces termination errors.

MWS Wire Industries custom manufactures Multifilar® magnet wire to assure flat, parallel construction in sizes AWG 16 and finer, and up to 20 conductors wide in some sizes.


Four conductor 28 AWG heavy polynylon-155
Multifilar® magnet wire in red, green, clear and blue.

Download the Data Sheet
Code NumberInsulation TypeThermal ClassDielectric ConstantNEMA MW1000 DesignationAvailable Colors
1Polyurethane 1551553.70MW 79-CRed, Green, Natural, Blue, Yellow Black, Violet, Orange, White, Brown
1Polyurethane 1801803.70MW 82-CRed, Green, Natural, Blue, Yellow Black, Violet, Orange, White, Brown
2Poly-Nylon 1551553.81MW 80-CRed, Green, Natural, Blue, Yellow Black, Violet, Orange, White, Brown
2Poly-Nylon 1801803.81MW 83-CRed, Green, Natural, Blue, Yellow Black, Violet, Orange, White, Brown
4Polyester 2002003.82MW 74-CRed, Green, Natural, Black
5Armored Polyester2003.86MW 35-CRed, Green, Natural, Black
6Solderable Polyester*1803.76MW 77-CRed, Green, Natural, Black
7Formvar1057.40MW 15-CRed, Green, Natural, Black
8Polyimide (ML)2403.90MW 16-CRed, Green, Natural, Black

Bonding Films

Bond Code NO.Bonding Coat (Operating Temperature)Solvent*
1Polyvinyl Butyral (105°C)Alcohol
2Nylon (105°C)None
3Epoxy (130°C)MEK or Acetone
4Polyester (130°C)None
5Polyamide (165°C)None
6Polyimide (ML) (240°C)None

Bonding Thickness Standards

AWG SizeThicknessTolerance
16 - 20.0007"+/- .0002"
21 - 28.0005"+/- .0002"
29 - 32.0004"+/- .0001"
33 - 36.0003"+/- .0001"
37 - 41.0002"+/- .0001"
42 - Finer.0001"+.0001"/-.0"

Part Ordering Numbering System

B 2 38 1 1 1 1 (155)
Product LetterNumber of ConductorsAwg SizeInsulation BuildInsulation TypeColor CodeBonding FilmThermal Class
For all Multifar® magnet wireUse ( ) for more than 9 conductors1 = Single
2 = Heavy
3 = Triple
4 = Quadruple
See above chart for correct code number0 = None Required
1 = Red/Green
2 = Green/Clear
3 = Red/Green/Clear
4 = Red/Green/Clear/Blue
9 = Special - call for color code
See above chart for correct code numberFor Poly and Poly-Nylon insulations specify 155 or 180 thermal class
EXAMPLE = 2 Conductors - 38 AWG Single Polyurethane 155° - Red/Green - Butyral Bond

Multifilar® Data Sheet

Download the Data Sheet