Could anybody help us on how to clean the PCBs with Conformal coating. We are using IPA in Ultrasonic Dip for cleaning the PCBs for after repair quality. Can we use Acetone in Ultrasonic Dip, Thanks in Advance, reg
Thanks Jpanhalt, Thanks, What is lacquer thinner, what is the Chemical Name & Commercial Name?I have used acetone, MEK, and lacquer thinner in ultrasonic cleaners with no problems. There is, of course, the fire danger. There is also a chance of accelerating a chemical reaction that you would not normally see without such mixing. I would not suggest using some halogenated compounds (e.g., methylene chloride or chloroform) in an ultrasonic cleaner to increase the solvent power. Perchloro-cleaning agents may be OK, if you can get them, but have a greater health risk associated with them.
As for whether any of those solvents will remove the conformal coating you have, that depends on the coating. Many are acrylic lacquer-based, and those solvents should work. Some may be epoxy or other chemistry and would not be very easily removed.
John
Thanks Kermit2, NotedMEK or acetone will work. Be sure you have a good ventilation system above for fumes.