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bga warp

2017/2/2 9:16:38

Hi,

I encountered a problem with pbga. One edge either warp downwards or upwards creating bridging or open. This bga have fr4 at the bottom (compound molding at the top). The fr4 is bigger than the top compound by 3mm at each edge.

919
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Tayfun Karan

2017/2/4 9:16:38

Please keep doing your great job.

Andy

2017/2/4 9:16:38

Useful!

reilhacpierre

2017/2/4 9:16:38

Thanks for the article. Very valuable.

Berger

2017/2/4 9:16:38

Great thanks for your helpful info. Really useful.

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