WLCSP packgae .4mm pitch sample gerber

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arunmaran10

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Hi All,
This is a kind request.
I need sample Gerber for 0.4mm pitch WLCSP package HDI board.
I need to know whether this pitch can be done in 3.5milsspacing/trace width in 9x9 Package




Regards,
Arunmaran
 

Most modern components are hard metric, the de-facto standard for SMD components (IPC-7351) is metric based, all mechanical design is metric, so it makes common sense to layout PCBs in metric...I have done for years.
 

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