Tutorials - Comparing Thermal Performances Heq

When considering the cooling of electronic components we can simplify the objectives as follows:

• Reduce overall electronics cost,
• Reduce the application's required component rating,
• Increase commutated power,
• Improved long term reliability.

To illustrate this, consider the following example. An electronic surface mount component is placed on the cooling device, as seen in the previous schematic.
If we define an equivalent heat exchange coefficient , Heq, as follows:

to summarize, the higher the Heq the more efficient the cooling device.
A higher Heq can bring success in reaching our objectives.
The table on the right shows a relative comparison of Ferraz Shawmut Thermal Management solutions applying Heq values.
Also see each specific data sheet which indicates relative Heq characteristics.

Note that:

Comparing Thermal performance : The solutions

Classification based on Heq