Electronics Forum | Wed Jul 21 17:49:52 EDT 2004 | jsk
problem: Too many solvents and boards are not clean Flux remains on the board after vapor degreaser and "Powdery" white residue after vapor degreasing Flux type is kester 186 Process: hand solder High Temp alloy, spot clean after hand solder e
Electronics Forum | Wed Aug 10 08:53:45 EDT 2005 | jh0n!
Wasn't aware of that. We're using a no-clean with RF pcbs, and that's something to bear in mind for the future - thanks.
Electronics Forum | Thu Jan 20 08:19:47 EST 2005 | davef
esoderberg: So, why do you want to clean your no-clean flux residues?
Electronics Forum | Thu Jan 18 15:28:10 EST 2007 | CK the Flip
If you are, in fact, running a No-Clean solder paste: Different no-clean solder pastes will leave different types of (benign) residues. If your paste has been qualified from a Bellcore/SIR/Electromigration standpoint, any residues remaining will NO
Electronics Forum | Wed Apr 28 12:08:02 EDT 2010 | tjg
Our latest designs are flip chip on flex based and we have issues with delamination/blistering. We know it is related to our vapor solvent (n-Propyl Bromide based) attacking an inner layer adhesive. Has anyone else ever heard of something like this?
Electronics Forum | Wed Apr 28 14:52:03 EDT 2010 | davef
When we hear the words 'flexible circuit' and 'delamination' in the same sentence, we think: * Excessive reflow temperature. * Entrapped moisture. Boardhouse: I hope this is a step towards redemption.
Electronics Forum | Tue Oct 29 21:27:21 EDT 2019 | aqueous
It depends on the flux type. If it's water soluble, it should be cleaned soon after reflow because OA flux remains active after reflow. If it's rosin or no-clean (low-residue), then the only concern is the longer wait time, the more difficult it will
Electronics Forum | Tue Jan 10 14:04:38 EST 2006 | Mike Konrad
Flashback time� Vapor degreasers, although still used in limited applications, no longer represent the conventional wisdom (due to multiple environmental issues). Aqueous-based technologies are the most common method of defluxing. Unlike most va
Electronics Forum | Mon Dec 18 14:36:09 EST 2006 | samir
Yikes!! In-line cleaning, to clean cosmetic and benign residues (from a NO-CLEAN) flux... You sure you can't switch fluxes? Another variable with residues is the solder mask. Depending on mask type (glossy, matte, semi-gloss, or semi-matte), will
Electronics Forum | Sun Sep 27 23:10:19 EDT 2009 | hallwayit
Hi, Walter, Why don't you try no-clean flux? We ever met the same condition, later, we changed to no-clean flux solved the problem.
