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How do I create a stack of vias

Leticia

We sometimes need to define a thruhole via as a stack up of blind microvias and buried vias. This is becasue on th eTop and Bottom layers I need a smaller pad, that cannot be acieved with thruhole via, but only with blind micorvias. Is it possible in PCB Editor to define such a via, or at least to place a via over another in this way? 

I'm an experienced self-taught on Orcad Layout 10.5, and I'm in the process to change to PCB Designer 16.6, and I find it very difficult to mentally 'translate' old Layout commands and names to PCB editor, they are so different!

Thanks in advance, 

Leticia

  • BuddSw

    If I understand your goal then it is easy to achieve.  When you create a via padstack using the Pad Designer you can define the pad size for the top layer, the bottom layer, and the internal layers separately.

     

  • Leticia

     Not so simple, I want it to be constructed with different drill sizes also, but the PAD Designer only allows one drill for the whole via.

  • BuddSw

    Sorry. I missed that you needed different drill sizes also.

  • aCraig

    Have you tried Setup->B/B Via Definitions using different seed vias.

    Regards,

    Craig

  • Leticia

     HI Craig, thanks, but what do you mean with different seed vias? I want to put all of them in the same place.

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