Hi All,

With regards to how a vias capacitance varies with the finished hole size,
is there a formula to calculate this? We intend to reduce the via dimensions
from 10 mils to 8 mils on a via-in-pad via. The concern is that in RF
circuits this has been used for a reason and we are getting kick back due to
the concern that the capacitance of the via is being modified.

Thanks for your help.

Best regards

Marc Cowen

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