Electronics Forum | Thu Feb 09 10:29:37 EST 2006 | stepheniii
I worked at one place where they had a dishwasher. They had stopped using it by the time I got there. But if they had kept using it I would have gotten a clean glass and put it in to see how clean it came out. I think after a while with only one tan
Electronics Forum | Sat Jul 08 00:06:16 EDT 2000 | Edmund
Can any pls enlighten me what is the purpose of using DI water during washing of PCBA. If the board is not wash using DI water , what will happe? What is the range of resitivity reading should be. Rdgs...
Electronics Forum | Wed Oct 07 13:15:06 EDT 2015 | markhoch
You can most certainly use the same reflow oven for both leaded and lead-free pastes. Obviously your thermal profiles will be different, as the lead-free paste should have a higher reflow temp. As long as your oven has adequate exhaust and flux manag
Electronics Forum | Tue Jan 20 10:00:25 EST 2015 | TM
Hello We are currently cleaning stencils from both process (PbSn and lead free) in the same cleaning machine. A customer is concerned about cross contamination of lead between stencils. Is there any test kit or tool that you can suggest to test the
Electronics Forum | Fri Nov 08 17:49:05 EST 2013 | davef
First, it's a surprise that your failure analysis lab thought everything was OK with these boards. They look like shit. Second, a few years ago, there was a bunch of complaints about ENIG boards with issues similar to what you're observing. There wa
Electronics Forum | Thu Apr 15 08:23:47 EDT 2004 | prod
hi, Having put a copper socket trough a wave soldering machine, and then through a DI wash, the boards have been dried and after a few days a green residue has been noticed on the copper. any suggestions? not drying properly maybe? or could it be th
Electronics Forum | Mon Aug 09 20:47:21 EDT 2004 | KEN
I think OA flux left on the pot would quickly looses its activity and become part of the dross waste stream, and smoke stream for that matter. Also, if your wave is setup properly your selective pallets will scour (push) the top of the lambda wav
Electronics Forum | Mon Jul 10 21:01:06 EDT 2000 | Dave F
Edmund: Responding to your questions: 1 What is purpose of using DI water to wash a PCBA? Compared to tap water, DI water is less likely to leave: � Metal cations on sensitive components. � Salts of Ca, Mg, and other stuff on metals on the assemb
Electronics Forum | Thu Nov 29 11:58:53 EST 2012 | rgduval
Thanks, Dave. As a start-up, we're trying to make it as cost effective as possible. That said, we also want to do it right. We don't want the possibility of the City/State/EPA coming down on us anytime in the future for contaminants being discharg
Electronics Forum | Tue Feb 18 11:02:05 EST 2014 | cunningham
Thanks for the reply. Yes we currently have an Ionagraph setup at the bottom of the wash where we take the first board out for that day and check it for contamination. Im just wanting to get an idea if any jets are blocked and that the temperature
