Aleph's Heatsink

ruangrit · 1st February 2004, 12:50 AM

Just a question on heatsink...

I have mounted IRFP240 to an aluminium flat plate then bolt the flat plate to the heatsink, during the test I found that the heat flow or thermal efficiency was not that good at all.

After a while the flat plate aluminuium ran very very hot (could not touch at all) but the heatsink was slowly heated up...I only felt warm when touch (I could touch for very long i.e. in minutes).

Is there any technique improve thermal efficiency or to make heat flows faster to the heatsink?

Will silicone in between help? What type of silicone?

Many Thanks,

Hybrid fourdoor · 1st February 2004, 01:19 AM

That stuff they make for processors would probably help. I think like Silver Arctic or something like is the popular one.

Also make sure the two surfaces really are touching each other good. Inconsistencies in the two surfaces will cause a loss of conduction bewteen the two.

Alain Dupont · 1st February 2004, 01:22 AM

uangrit

?? Will silicone in between help? What type of silicone?

You can us Silicone Heat Transfer Compound

found it at Active 15cad $ for 5 Oz

Good luck.

Alain.

trigon · 1st February 2004, 01:54 AM

And plus you will have to level the heatsink to the point where no gap is left in-between your mounting block and heatsink. This is what I have had to do.

Trigon.

ruangrit · 1st February 2004, 03:29 PM

Thanks a lot...for all your suggestions.

1st February 2004, 12:50 AM	#1
ruangrit diyAudio Member Join Date: Jan 2003 Location: Bangkok	Aleph's Heatsink Just a question on heatsink... I have mounted IRFP240 to an aluminium flat plate then bolt the flat plate to the heatsink, during the test I found that the heat flow or thermal efficiency was not that good at all. After a while the flat plate aluminuium ran very very hot (could not touch at all) but the heatsink was slowly heated up...I only felt warm when touch (I could touch for very long i.e. in minutes). Is there any technique improve thermal efficiency or to make heat flows faster to the heatsink? Will silicone in between help? What type of silicone? Many Thanks,

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1st February 2004, 01:19 AM	#2
Hybrid fourdoor diyAudio Member Join Date: May 2003 Location: Ft. Worth, TX	That stuff they make for processors would probably help. I think like Silver Arctic or something like is the popular one. Also make sure the two surfaces really are touching each other good. Inconsistencies in the two surfaces will cause a loss of conduction bewteen the two.

1st February 2004, 01:22 AM	#3
Alain Dupont diyAudio Member Join Date: Sep 2003 Location: Paris - France	uangrit ?? Will silicone in between help? What type of silicone? You can us Silicone Heat Transfer Compound found it at Active 15cad $ for 5 Oz Good luck. Alain.

1st February 2004, 03:29 PM	#5
ruangrit diyAudio Member Join Date: Jan 2003 Location: Bangkok	Thanks a lot...for all your suggestions.

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