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Old 11-08-2010, 07:34 PM #1
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Default Driver Heatsink Adhesive

So I have read around and heard you guys use the arctic Thermal paste, but that is conductive, so Why doesn't the electricity from the contacts on the board jump to the adhesive, pill and short circuit? Thanks


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Old 11-08-2010, 07:43 PM #2
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Default Re: Driver Heatsink Adhesive

Artic Silver paste isn't conductive. This paste is mostly used for CPU and heatsink on the computer and it is tested for non-conductivity.

http://www.arcticsilver.com/as5.htm
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Old 11-08-2010, 07:56 PM #3
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Default Re: Driver Heatsink Adhesive

It's not conductive but it is a bit capacitive but that shouldn't bother us.
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Old 11-08-2010, 08:17 PM #4
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Default Re: Driver Heatsink Adhesive

Sorry, I seen this stuff and it confused me,

Also, Dont you people use this adhesive instead of the compound? Thanks

Last edited by Toaster; 11-08-2010 at 08:19 PM.
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Old 11-08-2010, 08:26 PM #5
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Default Re: Driver Heatsink Adhesive

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Sorry, I seen this stuff and it confused me,

Also, Dont you people use this adhesive instead of the compound? Thanks
That is what I use. I actually picked some up locally at Microcenter.

They only list the ceramic on the website but the have the silver version at the one here and the best part is they are local and it has tons of stuff that I buy for this hobby. Beats the crap out of Radio shack. There are stores all over the country.

Micro Center - Computers, Electronics, Computer Parts, Networking, Gaming, Software, and more!
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Old 11-08-2010, 09:08 PM #6
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Default Re: Driver Heatsink Adhesive

i use that as well as a silicon based one. its kinda nice to be able to install a driver then fill it with thermal compound great heatsinking and wont ever come lose.
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Old 11-08-2010, 09:27 PM #7
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Default Re: Driver Heatsink Adhesive

I just ordered this some of this over the weekend.

Arctic Silver, Inc. - Arctic Alumina Thermal Adhesive
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Old 11-08-2010, 09:59 PM #8
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Default Re: Driver Heatsink Adhesive

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Originally Posted by cd520 View Post
I just ordered this some of this over the weekend.

Arctic Silver, Inc. - Arctic Alumina Thermal Adhesive
I believe that is the ceramic version. I almost bought some to see if it was good enough for sinking drivers but for $5 more I went with tested and true 99.8% pure micronized silver base.

Arctic Silver, Inc. - Arctic Silver Thermal Adhesive
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Old 11-08-2010, 10:09 PM #9
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Default Re: Driver Heatsink Adhesive

What are you guys going to do if you need to change the driver ? Those adhesive are going to bond forever.
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Old 11-08-2010, 10:13 PM #10
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Default Re: Driver Heatsink Adhesive

What type do people usually use? is there any difference between
these two products? VVV

Arctic Silver ASTA-7G Premium Silver Thermal Adhesive

Arctic Silver Alumina AATA-5G Thermal Adhesive

or is it just different packaging or something?

Both these products are on newegg, I just don't want to get a lower quality version or something on accident, Ive never noticed theres two types on that page till now



EDIT:
Quote:
What are you guys going to do if you need to change the driver ? Those adhesive are going to bond forever.
http://www.newegg.com//Product.aspx?Item=N82E16835100010


Last edited by Lasers and Masers; 11-08-2010 at 10:17 PM.
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Old 11-08-2010, 10:18 PM #11
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Default Re: Driver Heatsink Adhesive

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What are you guys going to do if you need to change the driver ? Those adhesive are going to bond forever.
I find a razorblade works great or you could rip it out with a pair of pliers.
Now the driver will have adhesive on it but the only reason you would take it out is if it is toast and then who cares how gentile you are in removing it.
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Old 11-08-2010, 10:26 PM #12
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Default Re: Driver Heatsink Adhesive

yup or you can pay some money to get some chemicals to dissolve the epoxy but most time i will stick it in the lathe and boar out the driver.
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Old 11-09-2010, 08:20 AM #13
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Default Re: Driver Heatsink Adhesive

DealExtreme: $7.23 FUJIK Silicone Thermal Glue (50ml Grease-Like)

This is not too bad too ..... and cheap, and efficent enough.

And can be removed (with some efforts), opposite to arctic silver alumina, that is permanent .....

BTW, glues themselves does NOT grant you electrical insulation between two metal parts, if the parts are touching also just in a single point, regardless if the glue is not conductive ..... as example, fitting a module in a heatsink ..... for this, you can use a single layer of Kapton tape, on the module, and then thermal glue for fill the rest of the space between module and heatsink .....
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Old 11-09-2010, 09:15 AM #14
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Default Re: Driver Heatsink Adhesive

I knew there was a reason I "had to have" the Kapton tape...
Thanks for letting me know what that reason was!
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Old 11-10-2010, 12:13 AM #15
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Default Re: Driver Heatsink Adhesive

When bonding the driver to the heatsink, how do you keep the contacts from touching the heatsink and keeping a buffer in between the two?
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Old 11-10-2010, 12:25 AM #16
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Default Re: Driver Heatsink Adhesive

You do not. Thermal compounds are often non-conductive on their own, but they do not guarantee and electrically isolated bond between two conductive surfaces at all. Between metal surfaces, it is quite likely that an electrical connection is formed despite the thermal compound.

If you require electrical isolation, use a material that is intended to perform that function - such as mica or silicone pads designed to mount semiconductors isolated from the heatsink they are on (and use plastic bolts/nuts too!)
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