Electronics Forum | Fri Jan 02 08:10:18 EST 2009 | childs
Thanks for the reply Stephen. The time factor sounds logical for moisture invasion during cleaning, probably why there's no articles showing concern about the process. I did try experimenting with some samples and believe it or not could not dupli
Electronics Forum | Mon Dec 29 09:10:22 EST 2008 | stepheniii
It takes time for the moisture to penetrate into the body. I think the 5 years of ambient would be more the culprit than washing the boards. Especially since you are baking them after wash. Get a few of the ICs and put them loose on a board and put
Electronics Forum | Mon Jul 17 15:35:09 EDT 2017 | svfeingold
Evtimov, I thank you for your response. I posted a thread about this on EEVBlog but there is less experience there for this type of equipment it would seem. If your interested there's a lot more detail about what I'm after: http://www.eevblog.com/for
Electronics Forum | Thu Dec 03 15:34:57 EST 2015 | proceng1
Superior 420-XF-LF is what we use. When we switched, it took some time of just running it through the stone before we got the optimal performance. Especially when going into the clean and dry tank on monday morning, we usually let the fluxer run for
Electronics Forum | Sun Nov 08 15:27:25 EST 2015 | davef
Thinner: Flux thinner, NOT paint thinner We kept a spare stone in thinner in inventory. We cut PVC pipe to size, cap in one end, screw thread on the other, stone inside, filled with flux thinner and covered with a screw cap. I don't remember who we
Electronics Forum | Mon Nov 09 09:44:22 EST 2015 | davef
Purpose. This describes setting-up a wave soldering system set-up for a new assembly design or checking a wave solder machine operation with a test board. Applicability. To be used for new design printed circuit assembles and during machine accept
Electronics Forum | Fri Sep 08 04:45:17 EDT 2000 | PeterB
As per Travis's reply it could be something other than the reflow process. Another good one is if the printed PCB's have been cleaned down due to print misregistration etc.. If not properly controlled paste residues can remain distributed about the p
Electronics Forum | Tue Oct 09 11:22:08 EDT 2001 | nifhail
Can I use one common cleaning agent to clean the stencils from a lines which are using RMA, No-clean and clean paste ( b'cos we onlyhv one stencil cleaner ). What about those misprinted board ? Can all of them use the same chemical or cleaned in the
Electronics Forum | Sat Jun 03 03:35:16 EDT 2006 | mika
Yes we do have a problem with this. We have by now investigate numerous lead/RoHS PCBA:s The RoHS boards are by far the most difficult one's to probe and test. Our people at the "test area" including Flying Probe and ICT they spend a lot of time to t
Electronics Forum | Thu Jun 07 15:37:32 EDT 2001 | Claude_Couture
Kerryn, It's the first time I hear someone who needs an automated inspection machine to check the cleanliness of stencils. Why not improve on the cleaning method itself. I use ultrasonic batch cleaner. It takes 3 minutes to clean a stencil, 2 minutes
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