Electronics Forum | Fri Apr 30 12:34:12 EDT 2004 | Bryan She
Hello all, these days I've met an OSP board testability issue. 1.OSP board 2.Solder paste:Kester R244 no clean paste 3.Print solder paste on test pad. Issue: There's brone(light yellow)flux residue on test pad,and the probe can't penetrate the residu
Electronics Forum | Thu Sep 07 03:47:07 EDT 2006 | vicknesh28
I have been getting non wets on fine pitch QFP packages on random leads during reflow process. I noticed that every time there is some flux residue left between the non-wet lead and the solder pad. No residue was not observed on the rest of the good
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 | Thu Mar 20 10:19:43 EDT 2008 | davef
Why are you planning to clean low residue flux? There are cleanable low residue fluxes, but why would you wan to clean it?
Electronics Forum | Wed Nov 08 20:22:13 EST 2000 | Dave F
You need to remove the oxide before you can properly solder your [or any] component. Call your flux supplier ask them for a more active flux than you are using and for their recommendations on removing the flux residues.
Electronics Forum | Mon Feb 25 14:32:37 EST 2002 | Kelvin
We always talk about the halide free fluxes and solder pastes. Is there anyone tell me what is the industrial acceptable level of halide content or contamination in flux residue? All comment are welcome !!! Kelvin
Electronics Forum | Tue Aug 13 20:58:45 EDT 2002 | davef
Kevin: What was the thinking behind your using a flux that required cleaning �on a post wash assemble for a power switch�? How do you keep the remaining corrosive flux residues from causing trouble [ie, corrosion, CAF, etc]?
Electronics Forum | Thu Mar 16 04:35:49 EST 2006 | vicknesh28
Paste is eutectic and it's copper based parts. Just another observation, i notice that the "flux" between the bottom foot and solidified paste is still in gluey state. Observation on good reflowed leads showed brittle type of flux residue. Can anyone
Electronics Forum | Fri Sep 07 09:13:21 EDT 2007 | smtirl
Folks, we've recently upgraded to Heller MKIII reflow ovens with Gen 9 cooling units. We're running N2 atmosphere at 1000ppm O2 and Kester256 solder paste. We're seeing a big problem with flux residues building up in the cooling section of the
Electronics Forum | Wed Jun 13 17:17:57 EDT 2001 | medernach
I use BioAct SC-10 and it seems to work pretty well. The best bet is to contact your solder paste manufacturer and ask them for a recommended cleaning solvent for the flux residues... Regards, Justin
