Great work, thanks for sharing!?
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I bet if you did just the flat of the transistor somehow, it'd be very close to the drain lead, but my guess is the case would still flow more heat than the drain lead.
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Either way, this shows us that BOTH the case and the leads are significant. The gate lead is just under half that of the case as far as temp rise. In fact, combining all 3 leads... it appears you still have more heat coming from them (combined), I believe.?
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-Nate
N8BTR
