Re: RTV for heat sink?

From: CFoley1064 (cfoley1064_at_aol.com)
Date: 10/14/04 

Date: 14 Oct 2004 17:55:45 GMT

>Subject: RTV for heat sink?
>From: "EBG" maberger@comcast.net
>Date: 10/14/2004 12:47 PM Central Daylight Time
>Message-id: <4MednUhCg8gUMPPcRVn-iw@comcast.com>
>
>I've always used the heat sink compund and hardware but was wondering what
>the deal is on using RTV.
>
>I know there's an electronics grade RTV but has anyone used a high
>temperature automotive RTV that is readily available at the hardware....like
>the gasket seal stuff?
>
>Thanks

It's a little more complicated than that. The blue RTV gasket goop in the auto
shop is not particularly thermally conductive, and is NOT recommended for
electronics use. However, there are RTV Silicones that are made to be
thermally conductive adhesives, for example:

http://www.mgchemicals.com/products/1032.html

There are much better performing thermally conductive adhesives available from
Loctite

http://www.loctite.com/int_henkel/loctite/entry.cfm

Also, their application engineering people are great.

Good luck
Chris