Thermal Analysis of Electronic Components

Get a FREE Liquid Cooled or Air Cooled Thermal Analysis now.

The electrical analogy is straightforward:

Thermal Analysis of Electronic Components

The sum of the three series resistors must not exceed:

Thermal Analysis of Electronic Components
Thermal Analysis of Electronic Components

Suppose the semiconductor package and joint interface resistors are as follows:

Thermal Analysis of Electronic Components

This implies the heatsink used must have a maximum thermal resistance of:

Thermal Analysis of Electronic Components

The designer must select a heatsink which has a thermal resistance of less than Thermal Analysis of Electronic Components Otherwise, the juncture temperature will exceed 120 degrees C.

Liquid Cold Plate

An analysis of liquid cold plates uses the same basic principles as air cooling, however in this case the waste energy is transferred to a liquid stream which flows through a cold plate heat exchanger. Since the liquid temperature will rise as the flow stream picks up the heat, one can calculate the rise using the energy equation. That is:

Thermal Analysis of Electronic Components

Go to Page 3 of 3 > > >

Download a PDF of this Thermal Analysis section.

Get a FREE Liquid Cooled or Air Cooled Thermal Analysis now.