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 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 Dec 24 11:23:22 EST 2008 | childs
I can't seem to locate any information/concerns about moisture entrapment in IC packages on the promary side in a double sided SMT assembly using water soluable solder paste when soldering the second side. A typical process would assemble/reflow/cle
Electronics Forum | Tue Jun 20 07:26:45 EDT 2017 | emeto
Thank you for the detailed input. That gave me material to think on.
Electronics Forum | Mon Jun 19 07:59:01 EDT 2017 | emeto
Hello, I am planning to use a water wash flux. As this is new to me, would you guys share what should I be aware of? I know cleaning PCBs itself presents issues. If you can share your experience so I can prepare better, it would be great.
Electronics Forum | Tue Jan 06 14:37:27 EST 2009 | stevek
The easiest way to prove out the absorbtion theory is to weigh the parts before wash, after wash, and after baking. You probably want to do this with the bare parts in isolation as the fab will pick up considerable moisture. Differences in weight s
Electronics Forum | Mon Jan 12 02:56:42 EST 2009 | sachu_70
Hi Bill, You should try pre-baking any such old devices prior to using on SMT Reflow. Refering to MSL-type3 guidelines could help in your case.
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 | Thu Jun 26 20:54:08 EDT 2008 | davef
As pointed-out above, the downside of telling your supplier how to perform a process can create problems: * It sets the cost of the operation ... I did what you told me to do * Materials selected may be incompatible ... I did what you told me to do *
Electronics Forum | Sat Sep 16 03:09:35 EDT 2000 | Sartor
I am in trouble with gold finger cleaning and repairing.Can anyone recommend good solutions?Also,can anyone recommend a good flux paste source(s)?Thanks.
