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Heavy Formvar Round Magnet Wire

Formvar is a synthetic enamel composed of polyvinyl acetal and phenolic resins.Formvar’s hot oil resistance sets it apart from all other magnet wire insulations. The flexibility, adhesion and abrasion scrape resistance of Formvar film is excellent. Its electrical properties are very good and it is resistant to common solvents. While Formvar has been replaced in many applications, Formvar continues to be the recommended film insulation most commonly used in oil-filled transformers.Typical ApplicationsOil-filled transformersMotorsRandom wound coilsSolenoidsGuitar Pickups

For Use in Guitar Pickups
Formvar serves as an excellent choice of winding wire for pickup manufacturing companies and is chosen for it’s resistance to common solvents (including sweat and other liquids that can find its way into a guitar’s pickup). Heavy Formvar is used where top end brightness and note definition are desired, due to fewer windings than with thinner wire with more windings.

Product # AWG Size Nom. Bare Wire Diameter Min. Increase in Diameter Due to Film Coating Max. Overall Diameter of Film-Coated Wire
MWRD50HF50 0.00099 in
0.0251 mm
0.0002 in
0.005 mm
0.0014 in
0.0356 mm
MWRD48HF48 0.00124 in
0.0315 mm
0.0002 in
0.005 mm
0.00170 in
0.0432 mm
MWRD47HF47 0.00140 in
0.0356 mm
0.0003 in
0.008 mm
0.0019 in
0.0483 mm
MWRD46HF46 0.00157 in
0.0399 mm
0.0003 in
0.008 mm
0.0021 in
0.0533 mm
MWRD45HF45 0.00176 in
0.0447 mm
0.0004 in
0.001 mm
0.0024 in
0.0610 mm
MWRD44HF44 0.002 in
0.051 mm
0.0004 in
0.010 mm
0.0027 in
0.069 mm
MWRD39HF39 0.0035 in
0.089 mm
0.0006 in
0.015 mm
0.0045 in
0.114 mm
MWRD33HF33 0.0071 in
0.180 mm
0.0011 in
0.028 mm
0.0088 in
0.224 mm
MWRD34HF34 0.0063 in
0.160 mm
0.0010 in
0.025 mm
0.0078 in
0.198 mm
MWRD35HF35 0.0056 in
0.142 mm
0.0009 in
0.023 mm
0.0070 in
0.178 mm
MWRD36HF36 0.0050 in
0.127 mm
0.0008 in
0.020 mm
0.0063 in
0.160 mm
MWRD37HF37 0.0045 in
0.114 mm
0.0008 in
0.020 mm
0.0057 in
0.145 mm
MWRD38HF38 0.004 in
0.102 mm
0.0007 in
0.018 mm
0.0051 in
0.130 mm
MWRD40HF40 0.0031 in
0.079 mm
0.0006 in
0.015 mm
0.0040 in
0.102 mm
MWRD42HF42 0.0025 in
0.064 mm
0.0004 in
0.010 mm
0.0032 in
0.081 mm
MWRD43HF43 0.0022 in
0.056 mm
0.0004 in
0.010 mm
0.0029 in
0.074 mm
MWRD28HF28 0.0126 in
0.320 mm
0.0016 in
0.041 mm
0.0147 in
0.373 mm
MWRD32HF32 0.0080 in
0.203 mm
0.0012 in
0.030 mm
0.0098 in
0.249 mm
MWRD31HF31 0.0089 in
0.226 mm
0.0013 in
0.033 mm
0.0108 in
0.274 mm
MWRD30HF30 0.0100 in
0.254 mm
0.0014 in
0.036 mm
0.0119 in
0.302 mm
MWRD29HF29 0.0113 in
0.287 mm
0.0015 in
0.038 mm
0.0133 in
0.338 mm
MWRD27HF27 0.0142 in
0.361 mm
0.0016 in
0.041 mm
0.0164 in
0.417 mm
MWRD26HF26 0.0159 in
0.404 mm
0.0017 in
0.043 mm
0.0182 in
0.462 mm
MWRD25HF25 0.0179 in
0.455 mm
0.0018 in
0.046 mm
0.0203 in
0.516 mm
MWRD24HF24 0.0201 in
0.511 mm
0.0019 in
0.048 mm
0.0227 in
0.577 mm
MWRD23HF23 0.0226 in
0.574 mm
0.0020 in
0.051 mm
0.0253 in
0.643 mm
MWRD22HF22 0.0253 in
0.643 mm
0.0021 in
0.053 mm
0.0281 in
0.714 mm
MWRD21HF21 0.0285 in
0.724 mm
0.0022 in
0.056 mm
0.0314 in
0.798 mm
MWRD20HF20 0.0320 in
0.813 mm
0.0023 in
0.058 mm
0.0351 in
0.892 mm
MWRD19HF19 0.0359 in
0.912 mm
0.0025 in
0.064 mm
0.0391 in
0.993 mm
MWRD18HF18 0.0403 in
1.024 mm
0.0026 in
0.066 mm
0.0437 in
1.110 mm
MWRD11HF11 0.0907 in
2.304 mm
0.0030 in
0.076 mm
0.0948 in
2.408 mm
MWRD12HF12 0.0808 in
2.052 mm
0.0029 in
0.074 mm
0.0847 in
2.151 mm
MWRD13HF13 0.0720 in
1.829 mm
0.0028 in
0.071 mm
0.0757 in
1.923 mm
MWRD14HF14 0.0641 in
1.628 mm
0.0032 in
0.081 mm
0.0682 in
1.732 mm
MWRD15HF15 0.0571 in
1.450 mm
0.0030 in
0.076 mm
0.0609 in
1.547 mm
MWRD16HF16 0.0508 in
1.290 mm
0.0029 in
0.074 mm
0.0545 in
1.384 mm
MWRD17HF17 0.0453 in
1.151 mm
0.0028 in
0.071 mm
0.0488 in
1.240 mm
MWRD4HF4 0.2043 in
5.189 mm
0.0037 in
0.094 mm
0.2098 in
5.329 mm
MWRD9HF9 0.1144 in
2.906 mm
0.0032 in
0.081 mm
0.1189 in
3.020 mm
MWRD6HF6 0.1620 in
4.115 mm
0.0035 in
0.089 mm
0.1671 in
4.244 mm