sec Posted December 13, 2004 Report Share Posted December 13, 2004 In some commercial devices, I've seen power semiconductors that are insulated from their heat sinks by a grey, rubber-like insulator.Does anyone know what this material is, how its thermal transfer properties compare to the classic mica washer/silicone grease combination, and where it can be obtained from? Quote Link to comment Share on other sites More sharing options...
Guest Yevgenip Posted December 14, 2004 Report Share Posted December 14, 2004 I've seen something similar on old CPU Heat sinks. It is like a sticky patch that transfers heat good. Now, they use thermal gel. Quote Link to comment Share on other sites More sharing options...
ante Posted December 15, 2004 Report Share Posted December 15, 2004 Hi Sec,This is a silicone fabric sheet. Specially designed heat conducting glass fibre reinforced silicone rubber primarily used as electrically insulating inserts for power transistors and other semiconductor components, to replace previously used materials Quote Link to comment Share on other sites More sharing options...
sec Posted December 15, 2004 Author Report Share Posted December 15, 2004 Thanks, that pointed me in the right direction. Some googling revealed that pre-cut insulators made out of this material go by the trade name 'Thermo-Pad', and sell for about US$1-1.50 for 5-packs of the most common shapes. Quote Link to comment Share on other sites More sharing options...
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