PCB thermal calculator

The PCB thermal calculator helps you estimate the junction temperatures of components which use exposed-pad packages. This tool?generates a quick estimate of the expected junction temperature based on the copper spreading area on the PCB.

0.3 °C/W
Thermal resistance from the junction of the device to the exposed pad on the bottom of the device.
 W  °C
Ambient = air temperature away from system/device (not heated by the system)
Board = temperature of the board 1mm away from the device

Temperature vs. PCB copper coverage area

Enhanced Thermal = single thermal spreading plane of 1 oz Cu
Minimum Thermal = single thermal spreading plane of 1/2 oz Cu

Click on the legend to toggle series in the chart.


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