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From: Robert Baer
X-Mailer: Mozilla 4.75 [en] (Win98; U)
Subject: Re: SMT boards: assembly and potting Q
Date: Wed, 25 Dec 2002 03:27:53 GMT
NNTP-Posting-Date: Tue, 24 Dec 2002 19:27:53 PST
Organization: EarthLink Inc. -- http://www.EarthLink.net
> Or you can buy the water soluble stuff as well.
> What about just using a normal oven?
> "Mike Shonle" wrote in message
> > RE 2, I saw something about using a toaster-oven for reflow soldering (it
> > was on the web site of some board fab house (I don't recall the name now)
> > that also made solder templates (for around US$150, maybe a bit steep).
> > HTH
> > -Mike
> > "Robert Baer" wrote in message
> > news:3E07D4B7.BA697DF5@earthlink.net...
> > > 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
> > > soldering?
> > > 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?
WOW! Guess i will have to either get a toaster oven and that paste
solder or pay a board house...
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