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Subject: Re: Washing PCB's after soldering...with what?
Date: Thu, 21 Nov 2002 17:08:01 GMT
NNTP-Posting-Date: Thu, 21 Nov 2002 12:08:01 EST
Organization: Road Runner
PCS Electronics wrote:
> We're hand-soldering (small series) our PCBs and are
> wondering what would be the best chemical for washing
> the boards afterwards.
> We've tried Acetone and Ethanol, the first is way too strong as
> it melts the caps and other plastic, the second (Ethanol - alcohol)
> leaves the PCB looking very dry and ugly with white powder
> where the soldering paste used to be.
> Does anyone here have experience with this kind of stuff?
> Best regards,
> Marko - PCS Electronics
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> tel +386 31 318 236
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Well, I usually don't have to bother, as the boards come out rather
clean. I hope you are not using solder paste. The rosin core solder
works better on it's own, and makes far less mess. When I do clean them,
I use "liquid head & disc cleaner" from Rite-Off. Works nice, and does
not have any residue of its own. Not the fastest cleaner for this, but
it does work ok for me. There may be a rosin removal product from this
company, but I just have not looked. The stuff is on their generation
2000 line of products, which meets EPA guidelines, bla, bla, bla...no
ozone depletion, etc, etc...
Other than that, I saw a news piece that showed how Boeing (yes, the
airplane people) found that lemon juice (or was it orange?) turned out
to work better than the industrial product they had been buying for
years, and was a fraction of the cost. It cleaned up easy with water
afterwards. I'm not to excited about the idea of water, though I suppose
if done correctly...