Electronics Forum | Fri May 18 04:40:51 EDT 2007 | gregoryyork
Wash them in Saponifier frequently at around 40C rinse and dry thoroughly. I would imagine it could be going white if you have a resin system in the flux that is not water soluble. Ensure you are using suitable pallet material up to 300C for Lead Fre
Electronics Forum | Thu Jul 05 16:06:56 EDT 2007 | petep
What process / equipment have you found to best mark Revision levels / date codes and such onto small areas on PC Boards? I need a repeatable, economic solution that will endure processing temps and saponifier in the cleaners. Have used RoHS co
Electronics Forum | Wed Aug 26 22:14:07 EDT 2009 | davef
The blue tint could be the result of etching of the tin in your solder connection during cleaning when using a slightly basic cleaning solution. Just about anyone can duplicate this by running a board 7 or 8 times through a cleaner with a saponified
Electronics Forum | Thu Jun 28 16:02:05 EDT 2012 | allwave
We had a similar problem with foam in our inline cleaner (TD). The problem were the solder paste flux residues. Boards went straight from SMT to Wave process and then washed. Anyway we changed the solder paste and problem solved. Are you using saponi
Electronics Forum | Wed Feb 14 16:00:50 EST 2018 | cbart
We have used it,, mixed results, cleans well, but can as you would imagine destroy plastic, i've had operators soak product and that caused problems, it also destroys any marking labels. we also use different Saponifiers to remove residues in the pas
Electronics Forum | Fri Oct 18 00:44:56 EDT 2019 | Aqueous Technologies
I know you mentioned you use a Tech Spray product. We have had success with their "Wondermask" water soluble product. When using a chemical additive (saponifier) in an aqueous cleaning system we have not experienced residues. I hope that helps. https
Electronics Forum | Tue Mar 03 07:47:48 EST 2020 | dontfeedphils
Thanks for the info. In a past life I ran everything WS and washed in a batch wash using saponifier. I'm surprised I never saw anything then as we would regularly wash boards assembled on only one side. Unless it's specifically washing in DI only.
Electronics Forum | Tue Oct 20 20:23:48 EDT 2020 | stephendo
I think temperature is the most under appreciated parameter. I'm not saying that it is the most important parameter, Just that a lot people do not give it the consideration it needs. I don't think it mattered as much in the old days of saponifiers an
Electronics Forum | Fri Apr 14 11:00:38 EDT 2000 | Dave F
Mario: Your ask a very broad question and give no background information. Generally, the amount and type of residues present on a printed circuit board at the very beginning of a SMT line depends on the exposure of the board up to that point. For
Electronics Forum | Mon Aug 26 12:44:42 EDT 2002 | dragonslayr
Scott- I've used both methods, titration and refractometer. Both are simple to perform. Titration is a simple, high school science class type process. Follow the chemical mixes accurately and then compare the resulting color change of liquid to a cha
