transistor glue?

johndbl123 · 24th March 2005, 06:40 AM

Anybody know what the white stuff between the transistor and heatsink from power amplifier? Where can i get those stuff.

Giaime · 24th March 2005, 06:53 AM

Yes it isn't glue, it is thermal compound. It is a silicone grease studied to improve thermal conductivity between the device and the heatsink. Practically it makes better thermal contact between the device and the heatsink. Always use it, but in very small quantities, well distributed under the transistor. You can get it at electronics stores, PC repair shops, and even supermarkets. Look for "Silicone Grease" or "Silicone heat transfer compound". Be aware that it isn't cheap: I payed 6euros for just 30g of it.

jaycee · 24th March 2005, 01:48 PM

it's also known as "Dow Corning" after the company that commonly makes it. You may be able to get it from a computer shop that sells CPU heatsinks.

B Cullingford · 24th March 2005, 03:58 PM

It is silicon grease with extra stuff in it to improve heat conduction. Messy stuff, seems to migrate by itself! Buy it at any good electronic supplier.

markp · 24th March 2005, 05:11 PM

'Heat sink compound' and it can be had at Radio Shack in a pen style applicator that is easy to use.

anatech · 25th March 2005, 01:54 AM

Just make sure it's fresh. Buying at a proper parts jobber is better that Radio Shack if you can. Replace the mica insultors while you are at it.

-Chris

Original Burnedfingers · 25th March 2005, 02:32 AM

Everything Chris said. Plus, make sure your hands and the insulators are clean and free of any metal or grit.

BrianDonegan · 25th March 2005, 11:17 AM

...and wash well afterwards. It gets everywhere and is not very good for you.

SkinnyBoy · 25th March 2005, 12:05 PM

Quote:

Originally posted by jaycee
it's also known as "Dow Corning" after the company that commonly makes it.

never heard of it refered to as that.... hmm....

you can also get silver stuff, which has better heat transfer properties. but I guess its upto you.

DigitalJunkie · 25th March 2005, 12:13 PM

"Artic Silver" (IIRC) is the name of the silver kind my friend uses on the CPU's in his PC's..
It's supposed to be "the best" heatsink-goop(technical term

) around.

24th March 2005, 06:40 AM	#1
johndbl123 diyAudio Member Join Date: Feb 2005 Location: Gilroy	transistor glue? Anybody know what the white stuff between the transistor and heatsink from power amplifier? Where can i get those stuff.

24th March 2005, 05:11 PM	#5
markp diyAudio Member Join Date: Oct 2003 Location: L.A., CA	'Heat sink compound' and it can be had at Radio Shack in a pen style applicator that is easy to use. __________________ If it sounds good... it is good!

25th March 2005, 11:17 AM	#8
BrianDonegan diyAudio Member Join Date: Dec 2004 Location: Rock Ridge	...and wash well afterwards. It gets everywhere and is not very good for you. __________________ Twisted Pear Audio

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24th March 2005, 06:53 AM	#2
Giaime diyAudio Member Join Date: Oct 2004	Yes it isn't glue, it is thermal compound. It is a silicone grease studied to improve thermal conductivity between the device and the heatsink. Practically it makes better thermal contact between the device and the heatsink. Always use it, but in very small quantities, well distributed under the transistor. You can get it at electronics stores, PC repair shops, and even supermarkets. Look for "Silicone Grease" or "Silicone heat transfer compound". Be aware that it isn't cheap: I payed 6euros for just 30g of it.

24th March 2005, 01:48 PM	#3
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	it's also known as "Dow Corning" after the company that commonly makes it. You may be able to get it from a computer shop that sells CPU heatsinks.

24th March 2005, 03:58 PM	#4
B Cullingford diyAudio Member Join Date: Mar 2005 Location: California	It is silicon grease with extra stuff in it to improve heat conduction. Messy stuff, seems to migrate by itself! Buy it at any good electronic supplier.

25th March 2005, 01:54 AM	#6
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Just make sure it's fresh. Buying at a proper parts jobber is better that Radio Shack if you can. Replace the mica insultors while you are at it. -Chris

25th March 2005, 02:32 AM	#7
Original Burnedfingers diyAudio Member Join Date: Nov 2002	Everything Chris said. Plus, make sure your hands and the insulators are clean and free of any metal or grit.

25th March 2005, 12:13 PM	#10
DigitalJunkie diyAudio Member Join Date: Apr 2003 Location: Portland,Oregon Blog Entries: 4	"Artic Silver" (IIRC) is the name of the silver kind my friend uses on the CPU's in his PC's.. It's supposed to be "the best" heatsink-goop(technical term ) around.

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