Electronics Forum | Wed Jul 23 10:44:40 EDT 2003 | ADAM
Guys I was wondering if anybody out there had any suggestions for cleaning populated pcbs that have been contaminated with salty sea water . There is alot of evidence of white residues and salt deposits on the pcb's. I've tried putting them through
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 | Mon Feb 13 10:33:57 EST 2006 | fredericksr
Hello, I am automating a process on our floor from wire solder hand application to dispensed paste and reflow. The process involves "lidding" a shielding lid around our assemblies for microwave quieting. The result is non-hermetic. For cosmet
Electronics Forum | Mon Dec 06 04:40:39 EST 1999 | cklau
Halo; In your last message you did not mentioned why your customer need to use IPA to clean PCB's as their requirement and what subtances they want to get rid of (is it flux stain PCB's or component?).If so recommend your value customer of flux 910
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 | Sun Feb 26 21:48:28 EST 2006 | Mike Konrad
Hi GS, Just a clarification� No-clean does NOT equal no ions. It equals less ions (at best). Automatic R.O.S.E (Resistivity Of Solvent Extract) testers are commonly used to detect ionic contamination from no-clean applications. Your comment rega
Electronics Forum | Tue Aug 10 05:32:42 EDT 2004 | praveen_madaan@jabil.com
Hi, Has any body experienced the problem of poor cotacts on HDMI connectors. The connectors pins are gold plated and we see some kind of white residue on the gold pins.How to check if this is a flux residue?We are using No Clean flux in wave solderin
Electronics Forum | Tue Oct 13 22:22:14 EDT 1998 | mike
| All Y'll | | How do you clean components that must be added to an assembled board after water wash? | | BACKGROUND | | Our basic process goes like this: | | 1 Print paste with OA flux, place, reflow, wash | 2 Repeat 1 | 3 Insert PTH, OA flux
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 | Tue Feb 23 13:49:20 EST 2010 | davef
There should be no problem. Recognize that the residue of some low residue fluxes turn a milky-white color when you wash them. This could freak your quality people.
