Mitch,
PC board assembly factories don't use rosin flux these days, because it
can't be cleaned without dangerous chemicals. My city is still
remediating the ground water after the solvent trichloroethylene (TCE)
got into it from the local missile factory and poisoned a bunch of
people in the eighties.
I've been using water-soluble flux for 30 years. I use Kester 2331
organic liquid flux with Kester 331 organic core solder. It's rather
active, so you have to wash it off within a day or the board gets
corroded. I wash the boards under hot running water while scrubbing with
a toothbrush, then remove the water with compressed air.
Another benefit of this flux is that it has super wetting action, which
makes it easy to solder 0.5mm pitch TQFP packages with a standard
soldering iron. I can even solder 0.4mm pitch parts.
There is also 'no-clean' flux, which leaves less residue than standard
rosin core solder. That's what is used in many factories where low cost
is king, such as consumer audio electronics. It's not show quality,
though. The Kester organic flux makes clean, shiny solder joints.
On 3/8/16 5:55 AM, Mitch wrote:
I can't seem to get my boards as clean as they could be. I spray with a pc
board cleaner, then wipe and let it dry, and deal with the residue. I never
thought about washing with water. I'll give it a try. Thanks.
--
David Forbes, Tucson AZ
--
You received this message because you are subscribed to the Google Groups
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send an email to [email protected].
To view this discussion on the web, visit
https://groups.google.com/d/msgid/neonixie-l/56DEF85A.3030406%40dakotacom.net.
For more options, visit https://groups.google.com/d/optout.
