[TriEmbed] soldering oxidized pins - QFN part

Alex Davis alexd at matrixwide.com
Wed Jan 27 09:57:25 CST 2016


I have a QFN part which shows signs of oxidation on the pins, and I'm
wondering if there's anything I can or should do to clean it up.
Unfortunately, it's an old-stock part, so I can't just get a new one.

I have some photos here of the part:
https://hackaday.io/project/9150-68040-upgrade-for-powerbook-520c/log/30827-68040-has-arrived

I am hoping there's enough un-oxidized metal on each leg that the solder
and flux will wet the legs properly. I'll be point soldering a few pins
on each side before drag soldering the rest, so I should be able to
evaluate if it's going to work before committing to soldering the whole
thing.

Alex


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