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Originally Posted by HammerSandwich
I expected a larger difference in C/W with those die size changes. Isn't heat transfer proportional to delta-T * area?
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The Resistance("C/W") will be inversely proportional to the area, for Heat-Flow through a parallel sided plate when the dimensions(area) of heat source and heat sink are the same.
This is not the problem though.
Here the dimensions of the source vary and the sink remains constant.
I use
Waterloo to solve the problem.
The Solution("C/W") includes the Convective Resistance and the Conductive Resistance(including TIM)