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Originally Posted by bobo5195
.......... It would be nice to know what a good approximation for PQ and C/w vs Q for that to save me using a long forumla and assuming that test rigs are "good".
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It would be nice, but this is the problem
There is not " a good approximation for C/w vs Q", if you are referring to measured "C/W".
Good data for "Swittech Storm"(G4) but as dicussed
here interpretation is impossible without more details.
Good data for LRWW but requires leap of faith re C/W(TIM)(different TIM and wb surface finish) and possibly "sensor offset allowance" (Die conductivity(360-400w/mk and sensor position(
seperately reported as 1.9939mm))
Possibly the only "good and interpretable" data is the SwiftechMCW6000 on a 144sq mm heat-source (Incoherent's presentation
here and subsequent posts).