HIGH CURRENT CALCULATOR

This tool offers a quick and easy way to calculate the required track width for high-current conductor tracks on an FR4 PCB. Please enter the following values:

°C
°C
A

The result gives a recommendation for the design track width of a single high current conductor for various PCB technologies.*

Heatspreading capacity inside the PCB 160 mm x 100 mm x 1.6 mm
None Low High Very high
Fig. none Fig. low Fig. good Fig. very good
Total copper thickness Recommended track width
500 µm
HSMtec®
mm
mm
mm
mm
400 µm
Thick copper
mm
mm
mm
mm
210 µm
Thick copper
mm
mm
mm
mm
105 µm
Multilayer
mm
mm
mm
mm
70 µm
Multilayer
mm
mm
mm
mm

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The calculation returns a guide value on the basis of a 160 x 100 mm test layout. Thickness 1.6 mm. Base material of PCB FR411 = 0.25 W/mK. No convection 11 = 0.025 W/mK. Room temperature 20⁰C.