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How to add Microvias

Question asked by faizan.ul-haq on Nov 15, 2012
Latest reply on Nov 15, 2012 by DenisL

Hi,

 

I need to add microvias of 50um diameter with drill size of 47um for 0.4mm pitch BGA package routing. So far i am unable to find options in PADS layout to put such small microvias. I tried to define microvias of 50um dimensions using

 

Setup>Pad stack>Pad stack type>Via

 

The probelm is that the software does not accept such small via dimensions. When i put via diameter of 2mil and drill size of 1.85mil, software starts complaining that your drill size is more than via size..:/

 

Can anybody help. Screenshot is attached

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