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It is very common to relate ENIG pad surface finishing with BLACK PAD defect. However, is anyone know why BLACK PAD defect only happen on fine pitch pad areas such as BGA, QFP? Why this defect did not or seldom happen on capacitor or resistor pad?
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Daniel Gilbert
3/1/2017 10:40:55 PM
What you share on your post is quite useful.
Kermit
3/1/2017 10:40:55 PM
I have share it with my classmates. They all appreciate it a lot.
Bradley
3/1/2017 10:40:55 PM
Nice sharing. What you share in this article is very useful. I will follow you and keep reading your posts.
Earl
3/1/2017 10:40:55 PM
Your sharing is quite useful to my new project. Thanks a lot.