Electronics Forum | Thu Oct 05 12:10:36 EDT 2017 | duchoang
Thank you for your replies. We use No-Clean Paste and some customers do not want any residue left around solder joint even so, so little. They want the residue washed completely. If we use water-soluble flux, we still need to wash, anyway. Their conc
Electronics Forum | Mon Jun 21 22:27:57 EDT 1999 | John K.
We're a CM doing low volume/high mix and are considering buying from one of the two big names, TR** or Sp*******/El*********. We need saponified wash for some of our no-clean over wave; the great majority is OA from our SMT lines. Any thoughts?
Electronics Forum | Mon Jul 18 00:00:35 EDT 2005 | adlsmt
I have nothing to add technically but we have been washing no-clean for years. Use very clean filtered DI water to avoid the white residue issue and some good detergent or sopanifier and you will get great results.
Electronics Forum | Fri Apr 03 08:22:36 EST 1998 | Scott Cook
| At this moment in time we are using water soluble solder paste on our PCBs these are cleaned using water only, agitated with ultrasonics. After drying a white/grey residue is left around solder joints. Reflow profile is fine and a reliable wash pro
Electronics Forum | Sat Jul 16 03:59:31 EDT 2005 | pyramus
Thanks Everybody!!!
Electronics Forum | Sun Apr 05 18:59:15 EDT 1998 | Graham Naisbitt
Jaqueline There are so many variables in the electronic assembly manufacturing process involving more than 12 different chemistries, that it is impossible to easily identify and determine the nature and reason of such residues. GEC Hirst Research in
Electronics Forum | Thu Jul 14 01:43:09 EDT 2005 | pyramus
Solder paste used was Kester FL250M (no-clean).... components affected were only chip components 0603, no BGA & no IC components.
Electronics Forum | Thu Jul 14 13:45:32 EDT 2005 | slthomas
We've only seen it done by accident, and the result was a lot of white flux residue. You do need to make sure you get it all off, and to do so most likely means using a saponifier like sara suggested.
Electronics Forum | Thu Jul 14 00:54:53 EDT 2005 | Pyramus
Hi production encountered a problem today. There have been a mix-up of solder paste. We are currently running clean process in one side of board. Unfortunately when PD run the other side process they were able to used a wrong no-clean solder paste.
Electronics Forum | Wed Jun 24 21:34:02 EDT 2015 | kennyg
I am struggling with a water wash process for a very small (1"x1") PCB. It has components that are very esily damaged by contact. I'm stuck with wash. I know, I know, but no-clean isn't an option. We put the board in s compartmentalized wash basked
