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Originally Posted by Les
Fine
Then I lose it when looking at the big picture ,shown very roughly.
Will have to think my own play through.
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Staying with just the die for now...
Obviously you can't correct this error with a temperature offset, that is dependent on heat flux.
If you add corrections to the hole positions in the calculations (for watts q=k.a.dt/l, for die surface temp t2- (t1-t2)/(l1-l2)*l1), you can trick the equations into giving you the correct numbers. This is what I mean by "effective length"
Edit: added comments to chart