What's the cheapest source for non-electrically-conductive thermal pads? I found some on Ebay, but they seem to be more expensive than the ones I found on Digikey, but I might not be searching by the best terms.
Edit: the ones from Digikey I was looking at are PN BER179-ND
Edit: the ones from Digikey I was looking at are PN BER179-ND
Try get some from berquist themselfs, I just send 1 email to the distributor and ended op getting 12 nice silicon based thermal pads for to-247 for free 🙂
Any silicone thermal pad sucks. I've just measured some in TO-220 housing. Regardless which I've used (Bergquist, Fischer and some other) they have a thermal resistance of 2K/W and more.
When I changed to the good old micas and using thermal grease I could simply obtain half of the thermal resistance. In other words: When using micas you can use a smaller heatsink.
When I changed to the good old micas and using thermal grease I could simply obtain half of the thermal resistance. In other words: When using micas you can use a smaller heatsink.
Bocka,
you're absolutely right. The pads I got were k10's and there kapton (and not silicon): thermal resistanse 0,2C/W
you're absolutely right. The pads I got were k10's and there kapton (and not silicon): thermal resistanse 0,2C/W
Hi,
someone recently posted a link to WWW.kaptontape.com
They supply adhesive backed 1mil and 2mil by 0.75inch wide Kapton tape. Only $10 & $14 for 36yds. That's about 1 cent per To264.
someone recently posted a link to WWW.kaptontape.com
They supply adhesive backed 1mil and 2mil by 0.75inch wide Kapton tape. Only $10 & $14 for 36yds. That's about 1 cent per To264.
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