Electronics Forum: solder problem (Page 1 of 501)

micropad solder problem ?

Electronics Forum | Mon Nov 05 14:01:21 EST 2007 | dphilbrick

Not only a wizard but a damn good interrupter too there Dave.

micropad solder problem ?

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.

micropad solder problem ?

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

micropad solder problem ?

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

solder joint problem

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.

solder joint problem

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.

solder joint problem

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

Uncoalesced solder problem in fine pitch IC pads

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

Uncoalesced solder problem in fine pitch IC pads

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.

Uncoalesced solder problem in fine pitch IC pads

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?

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