Electronics Forum | Mon Mar 25 21:45:22 EDT 2024 | buckeye
I got an inquiry from one of our electronics labs with regards to their soldering processes. They use eutectic (63% Sn, 37% Pb) solder. For liquid flux they are currently using Kester 186, which is an old-school, full rosin (RMA and ROL1) flux that c
Electronics Forum | Mon Dec 18 14:36:09 EST 2006 | samir
Yikes!! In-line cleaning, to clean cosmetic and benign residues (from a NO-CLEAN) flux... You sure you can't switch fluxes? Another variable with residues is the solder mask. Depending on mask type (glossy, matte, semi-gloss, or semi-matte), will
Electronics Forum | Wed Apr 27 09:31:45 EDT 2011 | blnorman
In a different life, we switched to water based flux on one product line. With a little tweaking, process worked fine and our VOC emissions dropped. We tried to roll it out on another product and it never worked. The first side on this product had
Electronics Forum | Fri Jun 01 09:50:01 EDT 2001 | lumidor
Our PCBs manufactured with no clean flux have a waxy film on the board...is this normal? Our contract manufacturer recently switched to no clean from water wash. Thanks Carl
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 | 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 | Thu Sep 06 10:58:54 EDT 2001 | Steve
If I had to deal with this problem, I would switch to water soluble paste. It is a much more cost effective solution.
Electronics Forum | Tue Aug 26 12:52:04 EDT 2008 | circleprime
I have recently started to use RMA flux (customer requirement) for some of our projects. I am finding that some of my BGAs are slightly off. Not enough to be rejected but enough to cause concern. In the past I have been able to rely on the surface te
Electronics Forum | Mon Jun 19 09:47:23 EDT 2017 | georgetruitt
You have a lot to think about! What does the flux manufacturer recommend as far as specifics like water temp or pressure? Do they recommend high temp di-water a detergent or saponifier? Do you currently have a cleaning machine, batch cleaner or inl
Electronics Forum | Wed Feb 26 23:59:48 EST 2003 | Mike Konrad
Grant, No-Clean paste + IPA = White Residue! #1: Stop using IPA #2: Switch to either a solvent-based de-fluxing chemical or an aqueous-based de-fluxing chemical. If you are using an ultrasonic cleaner for your boards as stated, do not use sapon
