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Area of solder mask opening for MMA845x.

Question asked by Yosuke Ohkuma on Dec 3, 2014
Latest reply on Dec 11, 2014 by Yosuke Ohkuma

Dear All,

 

A customer asks us that the area of solder mask opening of MMA845x series is a little bit larger compared with general QFN package.

If you possible, please let me know why is the below figure recommended?

 

Solder mask opening : PCB land pad edge + 0.113 mm larger all around.

(Document Number: AN4077)

 

I would appreciate if you help for this question.

 

Best Regards,

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