definitely, thermally conductive epoxy.  try some of the distributors
and you may also be able to find the tape, though it isn't usually as
good.  by the way, as with all thermal interface material, thinner is
better.  use the thinnest possible layer.  also, with the tape there are
some that stick to ceramic packages but not to plastic.  i purchased
some surplus heatsinks with the tape on them and wondered why they fell
off until i looked it up.  you may be able to coax a sample out of
thermalloy or aavid if you aren't going to be using it much though it's
best to buy some eventually.

don't use super glue!  apart from the fact that it is not an ideal
thermal conductor, if it gets heated, i.e. by a soldering iron it
releases cyanide fumes!  i found this out the hard way separating
plastic parts with a dremel tool which heated the super glue, 2 tiny,
tiny whiffs and i still felt the effects the next day!  a big blob on a
lead that gets soldered could be your last, or at least not at all fun.
as far as i know, there isn't even a specific antidote for cyanide, it's
a bad poison.  i think it's hydrogen cyanide that gets released, it's
very acrid, but i don't know for sure.  frankly, i'm surprised there
isn't a warning about it yet, cutting things apart with a dremel tool
isn't very unusual, i guess it hasn't done any serious damage yet to
anyone with access to a lawyer.  honest, it's bad.  if it's another
toxin, or if only some super glues have this behavior (there are a
couple of slightly different types) i'd love to know.  i still use super
glue of course, but not on anything likely to ever see a soldering iron.

William Chops Westfield wrote:
>
> On Monday, Jun 14, 2004, at 14:23 US/Pacific, Dragisa Krsmanovic wrote:
> >
> > What do you use to glue a heatsink to a chip ?
> >
> There are a bunch of special purpose glues for this, several of which
> are probably sold at your local computer store.  Most seem to be
> epoxies loaded with alumina or silver.  http://www.arcticsilver.com
> seems to be "industry standard" for PC overclockers and similar.
---------

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