Heat transfer sompound and mica , silpads etc

dhole · 29th April 2005, 03:07 PM

So Im getting there. Aleph 5s on the way......
so I will be hooking up my 240's to the heatsink soon. CanI just use thermal transfer paste (i have some that i have used for pc cpu's before, guess that is the same stuff) or do I have to insulate them too with something else. I amin the UK so advise on what to use for irfp240 pakage would be nice. I have checked sil-pad but they are quite expensive. Oh and The same question goes for the diodes on the psu......should I or just use h.trnsfr cpund.
regards
dave

Blues · 29th April 2005, 04:45 PM

Use sili-pads or mica insulators. Without them the Drains of the power fets will short and puff, it's semicon heaven. Unless you are confident with whatever coating is on your HS. Heat transfer compound is just that and won't insulate.

29th April 2005, 03:07 PM	#1
dhole diyAudio Member Join Date: Jul 2004 Location: Brighton	Heat transfer sompound and mica , silpads etc So Im getting there. Aleph 5s on the way...... so I will be hooking up my 240's to the heatsink soon. CanI just use thermal transfer paste (i have some that i have used for pc cpu's before, guess that is the same stuff) or do I have to insulate them too with something else. I amin the UK so advise on what to use for irfp240 pakage would be nice. I have checked sil-pad but they are quite expensive. Oh and The same question goes for the diodes on the psu......should I or just use h.trnsfr cpund. regards dave

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29th April 2005, 04:45 PM	#2
Blues Lightning In A Bottle diyAudio Member Join Date: Sep 2003 Location: The Milky Way	Use sili-pads or mica insulators. Without them the Drains of the power fets will short and puff, it's semicon heaven. Unless you are confident with whatever coating is on your HS. Heat transfer compound is just that and won't insulate.