This calculator enables the user to calculate the maximum power that a resistor can dissipate with a given heatsink size and ambient temperature.
This calculator assumes 1°C/W for the themal resistance resistor body to heatsink case.
* Typical values of the thermal resistance element to case for heatsink mount transistor package resistors are: MP915 - 8.3°C/W, MP925 - 5°C/W, MP930 - 4.2°C/W, MP930 - 4.2°C/W, MP9100 - 1.5°C/W, PBH - 4°C/W, PBV - 3°C/W, AH2 - 3°C/W.