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 | Sun Dec 17 18:14:12 EST 2006 | greg york
circuitmaster designs prowave is unbeatable. They may have an agent in the usa if interested I will try to find out for you. cheers greg
Electronics Forum | Wed Feb 20 12:22:39 EST 2008 | shrek
KRIKIES, a designer insisting on cleaning no-clean residues! the BLAME-THE-PROCESS bandwagon travels everywhere, me lad!
Electronics Forum | Mon Feb 18 15:47:42 EST 2008 | ck_the_flip
In theory, no clean flux residues are electrically benign...period. Here's a good test. Subject the board to some moisture/humidity, and have your circuit designer ohm-out any areas that may be affected by conductive material. Option B: Have a la
Electronics Forum | Mon Feb 18 15:20:43 EST 2008 | kennyg
A PCBA contains a couple of parts that are not sealed and can't be water washed. We hand solder these with no-clean after everything else is water washed. The designer says the no-clean residue must be completely removed so that it will not affect
Electronics Forum | Wed Apr 28 12:08:02 EDT 2010 | tjg
Our latest designs are flip chip on flex based and we have issues with delamination/blistering. We know it is related to our vapor solvent (n-Propyl Bromide based) attacking an inner layer adhesive. Has anyone else ever heard of something like this?
Electronics Forum | Tue Feb 19 08:49:34 EST 2008 | rgduval
Get the ionic specs from your flux manufacturer, and show it to the designer. No-clean flux/solder is supposed to be low to minimal in ionic contamination, which allow the whole no-clean thing. If he needs further proof, you can have the board io
Electronics Forum | Wed Apr 19 13:32:51 EDT 2000 | C.K.
Dave: The main part of your machine that VOC-Free fluxes attack is your spray fluxer itself. If you haven't already, you'll need to purchase a spray fluxer that's designed to accomodate water-based VOC-Free fluxes (i.e. made of stainless steel with
Electronics Forum | Wed Aug 10 08:10:39 EDT 2005 | davef
Comments are: * Sounds like it's necessary to clean "heareous F381, F352 no clean solder paste" in your application. Consider a paste that may be better suited to your application. * If you're cleaning "low residue flux", consider using an organic ac
Electronics Forum | Mon Jul 25 06:12:53 EDT 2005 | lloyd
Folks thanks for all the info, I'm gonna check out our pad geometries and see how they compare with industry standards. Brian, could you elaborate a bit more on the stencil design you have mentioned. Do you mean that you have offset the stencil aper
