Magnet Wire

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Magnet wire delivers efficient conductivity and reliable insulation for coils, transformers, and motors in electrical systems. Bridgeport Magnetics’ “Flat Magnet Wire” was introduced in 2001 and has gained wide acceptance among manufacturers of power supplies and specialty motors in many countries. The product covers wire sizes downwards to 32AWG (0.24mm diameter) to 11AWG (2.39mm diameter) in the round shape with thickness-to-width standard ratios of 1:2, 1:2.5, 1:3, 1:3.5, and 1:4. For detailed information on the process, read more. All sizes will be available on spools measuring 6″OD x 3.5″ (10 lb).

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Why Is Our Flat Magnet Wire Widely Renowned?

Our flat magnet wire is preferred for its space-saving profile, excellent heat dissipation, and high-current capacity. As an experienced transformers manufacturer, we precision-form and insulate each strand to maintain structural integrity under mechanical and thermal stress. It integrates seamlessly with high-efficiency transformer components used in both industrial and commercial systems. Paired with our specialty wire options, it allows for customized builds that meet strict design constraints. Flat designs are especially effective in toroidal transformer wiring, where bend radius, packing density, and insulation consistency directly affect performance. Every product is tested for durability, conductivity, and winding uniformity. For higher ratios than 1:4 (thinner compared to the width) check our Laminax products!

t Wire Ratios- [in] (All dimensions over insulation)
1:2 1:2.5 1:3 1:3.5 1:4
AWG  Dia [in] T [in] +/-5% W [in] +/-5% T [in] +/-5% W [in] +/-5% T [in] +/-5% W [in] +/-5% T [in] +/-5% W [in] +/-5% T [in] +/-5% W [in] +/-5%
11 0.094 0.059 0.118 NA NA NA NA NA NA NA NA
11.5 0.089 0.056 0.112 NA NA NA NA NA NA NA NA
12 0.084 0.053 0.105 NA NA NA NA NA NA NA NA
12.5 0.08 0.05 0.1 NA NA NA NA NA NA NA NA
13 0.075 0.047 0.094 0.042 0.106 NA NA NA NA NA NA
13.5 0.071 0.045 0.089 0.04 0.1 NA NA NA NA NA NA
14 0.068 0.042 0.085 0.038 0.095 0.035 0.104 NA NA NA NA
14.5 0.064 0.04 0.08 0.036 0.089 0.033 0.098 NA NA NA NA
15 0.06 0.038 0.076 0.034 0.084 0.031 0.093 NA NA NA NA
15.5 0.057 0.036 0.072 0.032 0.08 0.029 0.088 NA NA NA NA
16 0.054 0.034 0.067 0.03 0.075 0.028 0.083 0.025 0.089 0.024 0.095
16.5 0.051 0.032 0.064 0.029 0.071 0.026 0.078 0.024 0.085 0.023 0.09
17 0.048 0.03 0.06 0.027 0.068 0.025 0.074 0.023 0.08 0.021 0.085
17.5 0.046 0.029 0.057 0.026 0.064 0.023 0.07 0.022 0.076 0.02 0.081
18 0.043 0.027 0.054 0.024 0.06 0.022 0.066 0.02 0.071 0.019 0.076
18.5 0.041 0.026 0.051 0.023 0.057 0.021 0.062 0.019 0.067 0.018 0.072
19 0.039 0.024 0.048 0.022 0.054 0.02 0.059 0.018 0.064 0.017 0.068
19.5 0.037 0.023 0.046 0.021 0.051 0.019 0.056 0.017 0.061 0.016 0.065
20 0.035 0.022 0.043 0.019 0.048 0.018 0.053 0.016 0.057 0.015 0.061
20.5 0.033 0.02 0.041 0.018 0.046 0.017 0.05 0.015 0.054 0.014 0.058
21 0.031 0.019 0.039 0.017 0.043 0.016 0.048 0.015 0.051 0.014 0.055
21.5 0.029 0.018 0.037 0.016 0.041 0.015 0.045 0.014 0.049 0.013 0.052
22 0.028 0.017 0.035 0.015 0.039 0.014 0.042 0.013 0.046 0.012 0.049
22.5 0.027 0.017 0.033 0.015 0.037 0.014 0.041 0.013 0.044 0.012 0.047
23 0.025 0.016 0.031 0.014 0.035 0.013 0.038 0.012 0.041 0.011 0.044
23.5 0.024 0.015 0.029 0.013 0.033 0.012 0.036 0.011 0.039 0.01 0.042
24 0.022 0.014 0.028 0.012 0.031 0.011 0.034 0.011 0.037 0.01 0.04
24.5 0.021 0.013 0.026 0.012 0.03 0.011 0.032 0.01 0.035 0.009 0.037
25 0.02 0.012 0.025 0.011 0.028 0.01 0.031 0.009 0.033 0.009 0.035
25.5 0.019 0.012 0.024 0.011 0.026 0.01 0.029 0.009 0.031 0.008 0.033
26 0.018 0.011 0.022 0.01 0.025 0.009 0.027 0.008 0.03 0.008 0.032
26.5 0.017 0.011 0.021 0.01 0.024 0.009 0.026 0.008 0.028 0.008 0.03
27 0.016 0.01 0.02 0.009 0.023 0.008 0.025 0.008 0.027 0.007 0.029
27.5 0.015 0.01 0.019 0.009 0.021 0.008 0.023 0.007 0.025 0.007 0.027
28 0.014 0.009 0.018 0.008 0.02 0.007 0.022 0.007 0.024 0.006 0.026
28.5 0.014 0.009 0.017 0.008 0.019 0.007 0.021 0.006 0.023 0.006 0.024
29 0.013 0.008 0.016 0.007 0.018 0.007 0.02 0.006 0.022 0.006 0.023
29.5 0.012 0.008 0.015 0.007 0.017 0.006 0.019 0.006 0.02 0.005 0.022
30 0.012 0.007 0.015 0.007 0.016 0.006 0.018 0.005 0.019 0.005 0.021
30.5 0.011 0.007 0.014 0.006 0.016 0.006 0.017 0.005 0.018 0.005 0.02
31 0.01 0.007 0.013 0.006 0.015 0.005 0.016 0.005 0.017 0.005 0.019
31.5 0.01 0.006 0.013 0.006 0.014 0.005 0.015 0.005 0.017 0.004 0.018
32 0.009 0.006 0.012 0.005 0.013 0.005 0.015 0.004 0.016 0.004 0.017

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Whether you’re designing compact coils or building large-scale transformers, our magnet wire offers the conductivity and durability your system demands. We supply magnet wire in a range of shapes, coatings, and gauges to match your exact electrical and mechanical needs. Our technicians provide guidance to help you meet winding specs, insulation standards, and performance targets. Contact us to request a quote and secure reliable wire built for efficiency, stability, and long-term use in advanced electrical applications. Call +203-954-0050 or email to sales@bridgeportmagnetics.com for custom ratios.