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.
Where consistent capacitance and impedance characteristics are required, Strand 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.
| Code Number | Insulation Type | Thermal Class | NEMA MW1000 Designation |
|---|---|---|---|
| 1 | Polyurethane* | 155° C | 79C |
| 1 | Polyurethane* | 180° C | 82C |
| 2 | Poly-Nylon* | 155° C | 80C |
| 2 | Poly-Nylon* | 180° C | 83C |
| 4 | Modified Polyester | 180° C | 30C |
| 5 | Armored Polyester | 200° C | 35C |
| 6 | Solderable Polyester* | 180° C | 77C |
| 7 | Formvar | 105° C | 15C |
| 8 | Polyimide (ML) | 240° C | 16C |
Bonding Films
| Bond Code NO. | Bonding Coat (Operating Temperature) | Solvent* |
|---|---|---|
| 1 | Polyvinyl Butyral (105°C) | Alcohol |
| 2 | Nylon (105°C) | None |
| 3 | Epoxy (130°C) | MEK or Acetone |
| 4 | Polyester (130°C) | None |
| 5 | Polyamide (165°C) | None |
| 6 | Polyimide (ML) (240°C) | None |
Bonding Thickness Standards
| AWG Size | Thickness | Tolerance |
|---|---|---|
| 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) | |||||||
|---|---|---|---|---|---|---|---|
| B | 2 | 38 | 1 | 1 | 1 | 1 | (155) |
| Product Letter | Number of Conductors | Awg Size | Insulation Build | Insulation Type | Color Code | Bonding Film | Thermal Class |
| For all Multifar magnet wire | Use ( ) for more than 9 conductors | 1 = single 2 = heavy 3 = triple 4 = quadruple |
See above chart for correct code number | 0 = 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 number | For Poly and Poly-Nylon insulations specify 155 or 180 thermal class | |
| Example = 2 Conductors – 28 AWG Single Polyurethane 155 – Red/green – Butyral Bond | |||||||