We use a thermally conductive RTV (silicone rubber sealant) which works
well.  It's part number CHO-THERM 1641 manufactured by Chomerics, of Woburn,
MA.  The adhesive is a paste, though, and may be too thick for your
application.
Jim Marsico
Senior Engineer
Production Engineering
AIL/Electronics Systems Group
An EDO Company
[log in to unmask] <mailto:[log in to unmask]>

        -----Original Message-----
        From:   Alain Savard [SMTP:[log in to unmask]]
        Sent:   Wednesday, March 21, 2001 10:13 AM
        To:     [log in to unmask]
        Subject:        [TN] Thermally conductive adhesive

        Hello Oh Wise Ones, (and hello to the others TechNetters too)

        We need to put some thermally conductive adhesive under a component.
There
        is a hole through the boards to allow some material to flow through,
but the
        adhesive must NOT be electrically conductive. We've tried the Output
384 by
        Loctite, but it hardens too fast and doesn't flow enough.

        For technical reasons, we cannot apply the adhesive before the
boards is
        assembled.

        Any ideas would be welcome.

        Thanks,

        Alain Savard, B.Sc.
        Chemical Process Analyst
        CAE Montreal
        e-mail: [log in to unmask]


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