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Do the tops of the long thin fins really increase the bonded fin heat sinks ability to remove heat?

April 26, 2017ability bonded FIN fins heat increase remove sink tops

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Do the tops of the long thin fins really increase the bonded fin heat sinks ability to remove heat?

1 Answer

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YES. In many cases, the overall fin efficiency for bonded fin heat sinks is between 60% and 75%. While fin efficiency of conventional extrusions may be high as 85%, bonded fin heat sink’s 200% to 300% increase in surface area more than compensates for lower fin efficiency.