Electronics Forum | Mon Jun 14 11:44:10 EDT 1999 | Vince Gedgaudas
Has anyone had issues where bottomside double reflowed smt has fallen off in the wave when using voc-free flux? I have verified the hotter profile was not the issue by using an alcohol based flux with no problems.This voc-free flux is also not causin
Electronics Forum | Sat Oct 29 20:29:30 EDT 2016 | adamjs
Posting here because all the threads asking for feedback on it are locked. We have been extremely happy with the 4300 tacky flux for BGA attachment. Not only is it both washable and no-clean (i.e. wash-optional), it was also the only tacky flux tha
Electronics Forum | Tue Jun 15 12:03:27 EDT 1999 | Dave F
| Has anyone had issues where bottomside double reflowed smt has fallen off in the wave when using voc-free flux? I have verified the hotter profile was not the issue by using an alcohol based flux with no problems.This voc-free flux is also not caus
Electronics Forum | Tue Sep 21 09:28:47 EDT 1999 | Jeanjean
Dear All, In order to understand the soldering technologies in SMT, I'd like to understand why some cards are soldered and then cleaned, or only soldered whitout water cleaning nor "ultra sound" wavelength. I mean that I wonder why we use toxic flu
Electronics Forum | Tue Jun 02 07:31:55 EDT 2009 | scottp
Early on when we started looking at BGAs we tried dipping. We've done it in production for a couple decades with flipchips. Dip fluxing BGAs worked fine in the lab but we ended up starting production with screen printed flux for cycle time reasons.
Electronics Forum | Thu Aug 20 07:10:46 EDT 2009 | davef
Questions are: * On what portion of the second side of the board [eg, solder only, solder mask only, etc] do you see this white hazy residue? * Could you attach a picture? * You mention cleaning this residue. What have you used to clean the residue?
Electronics Forum | Mon Feb 18 17:36:32 EST 2008 | kennyg
I should have mentioned... the only flux we use for the hand soldering is wire-core, no bottle flux. I think it should be a non-issue to leave the activated wire core flux residue. I'm just looking for some way to prove it to the designer.
Electronics Forum | Thu Jan 20 07:40:34 EST 2005 | esoderberg
Because our boards are heavily heatsinked with dow 340 which never hardens and I am afraid I will not only wash off the flux but the heatsink compound as well.
Electronics Forum | Wed Jan 19 16:52:11 EST 2005 | Mike Konrad
Just curious� Why only localized cleaning? Why not clean the entire board? Localized cleaning by nature is labor intensive. Mike Konrad Aqueous Technologies (909) 944-7771 ext 29 www.aqueoustech.com konrad@aqueoustech.com
Electronics Forum | Thu Aug 20 08:24:07 EDT 2009 | padawanlinuxero
Hi ! In both solder mask and solder joint, I am going to upload a picture today promise, I use only IPA and a ESD brush this kinda clean the problem
