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Originally Posted by Incoherent
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As far as "The tc offset in the bp ~ 0.001 - 0.05..." goes, I have measured a value for copper of, from memory, 0.0245 ish C/W/mm*100mm^2. It should be 0.0255C/W/mm for a parallel heat channel with xsectiom 100mm. With spreading effects, lower?
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Yes, according to my thinking.
There is a change in dimensions of the Flux Channel at the TIM/wb interface.
The c/w between the TIM/wb interface and the tc(wb) would be that of the larger Flux Channel of the wb with infinite heat-spreading(zero heat-spreading resistance), ie ~ 0.001c/w for 2mm of a 80x50mm(dimensions of Surge wb) Flux Channel.
For the case of zero-spreading c/w~ 0.05 for 2mm of a 10x10mm(Die dimensions) Flux Channel.
Edit: I do like
your C/W(TIM) = 0.063c/w for 11x10mm CPUs
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