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NNTP-Posting-Date: Tue, 24 Dec 2002 01:32:46 -0600
From: "Mike Shonle"
Subject: Re: SMT boards: assembly and potting Q
Date: Tue, 24 Dec 2002 02:33:40 -0500
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And for re-work, there's Chip-Quik for removing components
"Robert Baer" wrote in message
> I am hand assembling surface mount parts on a PCB.
> It is not easy to get chip resistors to align nicely, and SOT-23 parts
> are the worst.
> 1) What is the best way to keep alignment of these parts for hand
> 2) If hand soldering is not recommended, what is the least expensive way
> to assemble these parts at home (ie what do i get and where)?
> When completed, i would like to pot them, but need to keep ions and
> moisture, as these units are for voltages up to 2KV.
> I also am worried about mechanical stresses due to temperature cycling
> from (say) -55C to 150C.
> I think a conformal coating first may be best.
> 3) What is the best potting compound and method to use?
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