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Renesas Singapore - Knowledgebase

What size heat sink is necessary?

Latest Updated:12/01/2009


What size heat sink is necessary?


The amount of heat dissipation that can be achieved with a flat plate of aluminum is indicated below for reference purposes.

Assuming the same conditions as in the above case, a surface of approximately 50 square centimeters is needed when using an aluminum plate with a thickness of 1.5 mm.
Actually, heat dissipation characteristics greatly differ depending on factors such as the material of the heat sink and air convection.

When attaching the heat sink, it is necessary to optimize heat propagation between the device and the heat sink by using silicon grease, etc.

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