Electronics Forum | Mon Apr 29 04:57:28 EDT 2002 | madreindeer
Hi, That is very common in WS pastes.It is white residue (Salt) Usually it�s not dangerous it only looking bad. I think best way would be contact your paste supplier and they should know what would take a stain off if not, change supplier. There i
Electronics Forum | Mon May 26 11:02:17 EDT 2008 | jandon
Hi Mr. Necdet Ozyonum, Recently we did have same kind of problems when we use lead free reflow profile for leaded solder paste (AIM WS-483). There where solder resist lacks, we found white residue after aqueous cleaning. Not in the solder joints but
Electronics Forum | Fri Feb 01 03:03:08 EST 2002 | madreindeer
Hi, That is very common in WS pastes.It is white residue (Salt) Usually it�s not dangerous it only looking bad. I think best way would be contact your paste supplier and they should know what would take a stain off if not, change supplier. There i
Electronics Forum | Mon Apr 22 20:55:00 EDT 2002 | ianchan
Hi, this is not really a technical solution, just a feedback. we too have a model series using the same WS paste type. it gives a dull solder joint with white residue that can be marginally removed after post-DI water rinse (ie. not 100% removed).
Electronics Forum | Wed Apr 24 21:27:10 EDT 2002 | davef
50�C. * Boards are too hot to be cleaned. Yes, saponified cleaners will remove heat decomposed WS flux. Well, I suggested changing paste to another poster, because he mentioned overheated solder connections and I guessed that his white residue was
Electronics Forum | Fri Oct 25 04:13:33 EDT 2002 | kcngoi
Hi, No clean mean is no need to clean. Of couse if you usin incompatibility solvent to clean, the white residue will appear. If cleaning is needed, source the suitable solvent and this always suggested by your solder paste supplier. regards
Electronics Forum | Tue Oct 29 08:41:48 EST 2002 | peterpaulmary
from my experience, no clean mean "difficult and cannot clean" Normally, you will observe white residue when cleaning it. You should study the flux in the no-clean solder cream before cleaning it. Or change no clean solder to clean type solder
Electronics Forum | Thu Feb 16 11:42:29 EST 2006 | russ
I use Alpha 857 W.S. for wave is that what you mean? If so, I love this stuff, it solders everything. one downside to it is convection (wave , rework) can dry it out and leave white hazes and even residues at the joints.
Electronics Forum | Mon Jan 18 21:05:15 EST 1999 | Dave F
| I get white residue on my PCBs after vapor degreasing. No comments on the vapor degreaser. Yes, I still use one of these. I use a vapor degreaser and a 1,1,1 replacement solvent due to the quick clean and quick dry times. Anyway, I only get whi
Electronics Forum | Thu Jan 14 22:59:08 EST 1999 | Chris G.
I get white residue on my PCBs after vapor degreasing. No comments on the vapor degreaser. Yes, I still use one of these. I use a vapor degreaser and a 1,1,1 replacement solvent due to the quick clean and quick dry times. Anyway, I only get white
