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SMD ceramic capacitors dark spots

Electronics Forum | Mon Jul 23 11:02:56 EDT 2018 | mikedcmt

Thanks for your reply - parts in tape have similar markings - gets worse after reflow. ~20% have this issue. Units pass test no problem. Occurrence is random.

SMD ceramic capacitors dark spots

Electronics Forum | Mon Jul 23 10:56:38 EDT 2018 | dleeper

I've never seen this before and I would be suspicious. Have you tried to dust it off with a brush or Q-tip, it might just be some sort of process contamination. Have you looked at the reel to see if the parts are coming in with these spots from the

Re: Adhesion loss on passives over wave

Electronics Forum | Mon Mar 22 18:03:15 EST 1999 | Marc

| | | | | Hi folks, | | | | | | | | | | I am looking for inputs on a long-standing problem encountered in our shop: Bottom-side parts (passives) falling off in the Wave...where the only remnants of the part is a flattened glue dot of proper diamet

Sm t net
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