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Plated Copper Thickness

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tennythomas

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Is it possible for the copper foil (0.7mil) on the top layer to be plated to 1mil (finished copper on the top layer = 1.7mils) and the copper foil (0.7mil) on the bottome layer to be plated to 1.5mil (finished cu on the bottom = 2.2mils) differently?

Thanks in advance.
 

I would think yes this is possible. It would require masking of external layers during plating process. This does add to cost of fabrication however.

Another issue that might arise from doing this is warpage.

Eda
 
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