Electronics Forum | Thu Sep 17 11:09:32 EDT 1998 | Dave F
| I need an evaluation process to prove to a customer that our no-clean process does not leave excessive residue? Any ideas? Wayne: More of the same as Chry and Justin. KEY ISSUE The first thing that you need to know is: What does your customer me
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 | Mon Feb 03 11:17:55 EST 2003 | Randy Villeneuve
White residues are a common problem when cleaning no-clean fluxe residues. The white residue forms when the flux residue is partialy removed, etc. Alcohol should not be your only solution for cleaning. In general, solvents may attack some plastic par
Electronics Forum | Fri Jan 31 03:39:26 EST 2003 | NP
EC7M is clean up solvent that can help to prevent white residue problem. It made from Orange shield. Good luck
Electronics Forum | Mon Jan 27 12:02:00 EST 2003 | Mike Konrad
Dave is correct. No-clean flux + water = white residue (unless the proper chemical is mixed with the water). Additionally, no-clean flux + IPA = white residue. Many saponifiers work well as do other cleaning agents. White residue may also be a re
Electronics Forum | Tue Oct 31 21:49:38 EST 2006 | davef
First, we assume the white residue is only on the connector and not on other components. That would imply that either: * White stuff was on the connector when it came in-house from your supplier. [Confirm this theory by baking some connectors from
Electronics Forum | Mon Dec 06 15:24:46 EST 1999 | C.K.
I suggest that your customer is living in a land of washable >fluxes and has not kept currect with the vagaries of no-cleans >and your mission is to educate them of: >1 Costs of washing a no-clean and then trying to remove the >white residue >2 Ac
Electronics Forum | Sat Jul 20 09:02:04 EDT 2002 | davef
Probably 2) what is this white residue material (chemically )? => Natural or synthetic rosin 3) Can Saponifier wash, helps? If not what is the best solution to remedy this white residue. => Probably a saponifier will work. Some NC flux residues
Electronics Forum | Sun Jan 26 09:32:55 EST 2003 | davef
But soon after cleaning and drying with IPA, we find a white residue formation. A: IPA will not nothing to clean your board. The white residue is exactly what you should expect. Search the fine SMTnet Archives for background. >How do we avoid th
