Electronics Forum | Thu Apr 13 08:18:46 EDT 2006 | davef
Do a FITR analysis of this white material to help direct you in eliminating the choices. What do your paste and board suppliers say?
Electronics Forum | Mon Mar 05 20:53:32 EST 2001 | davef
When you say all over the board, please give more detail. Where are they located? [All over wave soldered portion, laminate only, solder mask only, solder only, specific components only, etc] When you say white residue, what color are they really?
Electronics Forum | Wed Jan 26 16:51:18 EST 2000 | Casimir Budzinski
I am using kester 958 no clean in an Electrovert Econopak 2 and having trouble with white residue, the solder pot has a foam fluxer and I have tried diferent setings on the air knife angle & pressure, the top board temp is aprox 200F.Any help would b
Electronics Forum | Wed Oct 17 19:12:32 EDT 2001 | scott
Dave's right! Wash the boards RIGHT AFTER reflow, don't let that residue harden. Then you turn around and cure that stuff during the second reflow by not performing the first wash???? wow.... By the way, are you having any problems with white resi
Electronics Forum | Wed Mar 24 16:28:06 EST 2004 | davef
No-clean flux residues can be either cleanable or not cleanable. The not cleanable type leave a milky white residue on the solder connection after suitable soaking in water. Your flux supplier will have suggestions on the appropriate flux.
Electronics Forum | Thu Apr 13 12:52:49 EDT 2006 | amol_kane
lint from what?...also roughly how often do you clean the oven? (not the heated chamber) but other areas to keep them clean? The operator say he has had to do it twice in 2 weeks to keep it clean due to the residue
Electronics Forum | Sun Aug 23 22:13:45 EDT 2009 | joannetjy
Hi All, Recently, I need to deal with a customer complaint that specify the PCBA white residue (flux residue from ecofree 303) may be the reason why the board intermittent. Anyone have such experience with this flux? Anyone can tell me is this flux
Electronics Forum | Tue Oct 23 10:41:36 EDT 2012 | blnorman
Ideally first you need to analyze the residue to see what it is. We had a customer with white residues after wave and elemental analysis revealed tin.
Electronics Forum | Wed Nov 09 12:50:25 EST 2011 | dyoungquist
I've never run D.I. water through an ultrasonic humidifier before. I think the reverse osmosis (RO) process removes more stuff (minerals and etc.) than the D.I. process does. My experience from using one in a home setting still tells me that is the
Electronics Forum | Wed Jan 20 21:25:32 EST 1999 | Tony A
| 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
