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
NoneLowHighVery high
Fig. noneFig. lowFig. goodFig. very good
Total copper thicknessRecommended 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

We'd be happy to create a custom solution concept for your high-current application.

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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.