Electronics Forum | Mon Apr 09 11:34:59 EDT 2018 | emeto
definitely don't mix clean and No clean. Run No Clean as you decided, but have your flux and paste manufacturers advice, how this flux can be cleaned(if you decide or required to clean). I know for a fact that some of these NC flux residues are almos
Electronics Forum | Mon Aug 19 09:42:56 EDT 2002 | blnorman
I agree with analysis. You'll never accurately find the source until you determine exactly what the "goo" is. We have this problem, but like previous posters, the goo is flux residue. We do use the ovens for both reflow and adhesive cure. The adh
Electronics Forum | Mon Nov 22 10:57:25 EST 2004 | davef
On the dendritic growth over the top of the capacitor: We agree that your capacitor supplier probably did not do a very good job of cleaning process residues from their device. On the metallic fragments under the capacitor: This sounds like solder
Electronics Forum | Mon Feb 27 19:48:32 EST 2006 | stepheniii
I'm not sure that would be valid. My understanding was that solids were trapped by other non-active flux residue. Which is why you can leave them on and why you see white residue after washing. I think the ROSE test would release particles that woul
Electronics Forum | Mon Mar 05 13:22:20 EST 2007 | blnorman
We use (and have for some time) used No-clean on our radio boards with no problems. We also conformally coat with a platinum catalyzed, addition cure silicone coating with occassional problems. These silicones are prone to cure inhibition or retard
Electronics Forum | Thu May 24 22:56:42 EDT 2007 | davef
We'd guess that your white residue on the solder is from minerals in the supply water. We expect the levels of these minerals that you see: * Vary depending on the season. Check with your public water authority for anaylsis. [Recognize that this ma
Electronics Forum | Sun Feb 26 17:40:35 EST 2006 | GS
Hi, just my comment, theoretically No Clean means no Ion Contaminants from Flux, but it some some case ion contamination (Cl-Br-F) could come out from raw PCBs, from Components, from fingerprints, etc. To incorporate a ROSE step in the pro
Electronics Forum | Thu Mar 23 20:31:45 EST 2000 | davef
Hey Cartman: Recently, I was over at a plant that does ICT on RMA fluxed boards and asked them about flux residue on test probes. The test machine operators: * Think flux residues are a pain in the gluteus maximus. * Change probes (from a collectio
Electronics Forum | Fri Oct 25 04:06:56 EDT 2002 | kcngoi
Hi Adam, Excessive heat from soldering iron will left the burn mark of RMA flux. The residue is hard to remove. Suggest to use the Flux pen for better control.
Electronics Forum | Tue Aug 10 03:13:30 EDT 1999 | Dreamsniper
| hello to everybody, | we have a really satisfactory no clean process, both smt/reflow and wave soldering, but we get troubles with defects rework; | does anybody know how to eliminate flux residues or how not to produce them during rework operatio
