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How to define different via landing and capture pad size?

Question asked by mdt on Jul 13, 2016

Hi,

 

how can I define Vias spans with a larger via capture pad than via landing pad? I only managed to influence the top, bottom and inner layer via pad diameters. But this is not working for me because I need multiple layers of hdi vias.

 

Example for clearification:

* On via span 1-2 I need 350 µm via capture pad on layer 1 and 250 µm via landing pad on layer 2 (working)

* But on via span 2-3 I need 350 µm via capture pad on layer 2 and 250 µm via landing pad on layer 3 (not working)

* And on via span 3-4 I need 350 µm via capture pad on layer 3 and 250 µm via landing pad on layer 4 (not working)

 

Does anyone has a solution for this?

 

Regards, Michael

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