Calculating Thermal Impedance To Determine Your Required Heatsink Rating

* Note: Include the rating of your thermal grease or themal pad when selecting a heatsink

Step One:

Required Output Power
Watts

Next

Step One:

Efficiency @ Required Output Power
%

Next

Step One Complete:

Your Dissipation Equals
Watts

Next

Step Two:

Maximum Baseplate Temperature

ºC

Next

Step Two:

Maximum Ambient Air Temperature Available For Cooling The Heatsink
ºC

Next

Calculation Complete:

Your Required Thermal Impedance* Is:
ºC/Watt

Reset