Thermal pads for transistor mounts
In article ,
Eeyore wrote:
geoff wrote:
Eeyore wrote:
Gareth Magennis wrote:
Am I right in my belief that putting heatsink compound on silicon
pads gives less thermal conductivity than pads alone?
Do you mean silicone pads ?
There's simply no purpose in using heatsink compound with them. In as
much as it adds something to the thermal path it must increase the
thermal resistance at least by a tiny bit.
Bring back mica and berlyium oxide.
I prefer live heatsinks myself. That helps keep the device die that much
cooler.
And adds greatly to the capacitance of whichever electrode is connected
to the case. Usually a bad thing, design-wise.
Isaac
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