Electronics Forum | Mon Jul 01 15:40:12 EDT 2013 | davef
Walter: The things I'd look at first are: * Temperature of the water wash. I expect the solution to be in the 140-150*F range [Check with your flux supplier for recommended temperatures] * Temperature of the boards when entering the cleaning process.
Electronics Forum | Mon Jul 01 16:34:46 EDT 2013 | wpierowski
So that is common when the temp on the wash is high? The temp was adjusted for a flux that required a higher temp. How much of an issue is this tin oxide?
Electronics Forum | Thu Nov 21 12:06:16 EST 2013 | rgduval
The last time I got corroded parts out of my wash was when my DI tanks were spent, and I was pretty much using straight tap water. Refreshing the DI tanks eliminated my issue. Hope this helps. cheers, ..rob
Electronics Forum | Mon Oct 27 05:50:24 EDT 2014 | robl
Hi Rob, We use a Brady THT-1-457-10 for serialisation, goes through double sided reflow and aqueous or ultrasonic wash depending on customer requirements. Rob.
Electronics Forum | Tue Jan 27 09:18:22 EST 2015 | swag
Agree to disagree on Nano Protec. Have you used it and studied the results? We do 3D inspection and clean our stencils in the UT wash on a regular basis. Volume is better and we have to clean on a much lesser frequency when using Nano Protec.
Electronics Forum | Mon Dec 01 14:51:55 EST 2014 | jpal
We had the same problem too. Water would remain under the caps even after a bake out. We saw this numerous times when the caps were removed after the wash and bake. The only fix was to hand solder the large electrolytics.
Electronics Forum | Wed Apr 29 02:57:05 EDT 2015 | jandon
Immersion tin is very sensitive for handling, scratches, storage condition and time, thermal influence and washing. You will get problems in second reflow if you have double sided PCB with immersion tin surface finish.
Electronics Forum | Mon Sep 07 17:29:02 EDT 2015 | emanuel
Hi Dave, Already looked there, nothing for any cleaner, weird. What I am looking for are the 2 spray bars in the washing compartment.
Electronics Forum | Sat Sep 12 09:49:38 EDT 2015 | davef
If the boards were still "wet" after DI wash, your [I assume] low res flux could be reacting with the moisture on the board and causing the white spots. The preheater in the wave could have more dryification than the preheater on the selective solde
Electronics Forum | Mon Oct 05 16:05:40 EDT 2015 | cyber_wolf
Washing no-clean solder residue out from under BGA's might present a challenge.
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