Electronics Forum | Mon Nov 05 14:01:21 EST 2007 | dphilbrick
Not only a wizard but a damn good interrupter too there Dave.
Electronics Forum | Thu Nov 01 22:32:57 EDT 2007 | lvzhu
CSP has pillow, the BGA's ball doesn't combination with the solder paste. also ,the 0402 chip aftet the oven ,the surface looks like many tin ball pile together. how solve this problem. thanks for your discuss.
Electronics Forum | Tue Nov 06 15:07:43 EST 2007 | russ
Sounds like you did not achieve reflow at all, what max temp did you hit in oven? Russ
Electronics Forum | Sat Nov 03 09:39:27 EDT 2007 | davef
Flux exhaused or CSP never came to peak temperature * BGA balls don't combine with the solder => Flux exhaused or BGA balls never came to peak temperature * 0402 surface looks like many tin balls piled together => Flux exhaused Start your thermal
Electronics Forum | Fri Jul 26 08:25:25 EDT 2013 | emeto
If there is a way to pre-tin the parts, that might help in forming better joint with gold.
Electronics Forum | Mon Jul 29 05:48:35 EDT 2013 | anilw2006
Thanks for support. Is it any special process of pre-tinng? Regards, Anil wagh.
Electronics Forum | Fri Jul 26 05:14:38 EDT 2013 | anilw2006
We had a solder joint problem in gold plated PLCC68 ic. We do double sided reflow process with Cookson OL107F paste. First we do top with paste and second with glue process.The solder joint shape and wetting looked normal.In the process of testing
Electronics Forum | Mon Sep 08 09:59:56 EDT 2008 | vladig
Here we go with another "solderability problem". How do you know the pads on the bare PCB are oxidized? Just based on its colour? If that is the root cause, then why ohter parts on the same board are fine? If you want to solve the problem, get it's
Electronics Forum | Wed Sep 10 09:34:25 EDT 2008 | realchunks
In the real world where I work, I turn knobs (really key boards, mouse, or touch screens) every day to solve solder related problems. I can tell you exactly why I have to for each one I adjust.
Electronics Forum | Mon Sep 08 20:55:04 EDT 2008 | davef
Of the six pads in the picture, which are the two that are unacceptable?
