Self-heating of conductor paths (adiabatic)

Working with short current pulses, it is good to know the temperature rise of the conductor path. For short durations, a conductor path can withstand a multiple of its nominal current. However, it is essential that the copper doesn’t heat up too much. Calculate the heating of the conductor paths below.

The calculation neglects the heat transfer to surrounding materials. The real temperature rise therefore is always lower than the calculated results. The calculations are simplified to match the specific characteristics of copper at 100 °C.


Length [mm]
Width [mm]
Thickness [µm]
Current [A]
Duration [ms]


Cross section
Voltage drop
Power loss
Temperature rise