Electronics Forum | Fri Feb 10 13:02:00 EST 2023 | stephendo
Those capacitors look totally fluxed. I can't tell if the last photo is showing a concavity or a blob of stuff. I think it is a blob of flux and contaminants. Does it burn off with a soldering iron?
Electronics Forum | Sun Feb 12 10:37:35 EST 2023 | dilogic
It looks like metallization was somehow etched out from the capacitors. Does it happen on all capacitors on that PCB or just a single type?
Electronics Forum | Tue Feb 28 18:49:28 EST 2023 | joekirin
Are you gluing these components by chance? I had an assembly where a glue dot was slightly too big and it pulled to the outside of the components solder joint. This looks eerily similar.
Electronics Forum | Thu Mar 09 20:55:08 EST 2023 | emeto
It looks like the plating and metalization were stropped off the component. I would suggest these are counterfeit parts. Are these Pb free parts and process?
Electronics Forum | Tue Feb 14 05:07:51 EST 2023 | klauss
it happen on all caps with the same value but only single type.
Electronics Forum | Tue Feb 14 09:01:20 EST 2023 | dilogic
You mots likely got bad caps - you should contact supplier/manufacturer of that caps.
Electronics Forum | Fri Feb 10 08:39:09 EST 2023 | klauss
Hi all, what may cause this things in attachments? Did it really rot as i thought? or it is something else.
Electronics Forum | Fri Feb 10 14:29:10 EST 2023 | klauss
It happened just after it came out of the reflow oven. And i guess the thing on the last photo is not blob of staff but the remaining part of termination of the cap. because when i try to iron soldering on it, i just cant. solders not sticking. on it
Electronics Forum | Tue Jul 06 17:10:19 EDT 2004 | Pete
Quality, consistency and labor savings all wrapped up into one nicely packaged piece of electro-mechanical marvel called AOI. Look for the number of templates one can store per component, lighting options, can it do through hole? Look at reporting
Electronics Forum | Wed Oct 12 11:08:12 EDT 2005 | Mike
Hly, The solder ball in your picture looks just like the countless BGA solder joints that I�ve produced over the past 8+ years. We've had a good number of these joints X-rayed, cross-sectioned, and thermally stressed. Some say that the stretched loo
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