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Question About Your Board Stack Example - Why Blind VIA is Different Size?

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  • Question About Your Board Stack Example - Why Blind VIA is Different Size?

    Can you please tell me why the blind VIA in the example stackup you use is bigger in size than the micro vias?

  • #2
    The blind vias in the particular stackup are mechanically drilled and they can't be practically manufactured with as small hole diameter as the micro vias (laser drilled).

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    • #3
      Nice, thanks a lot for that, makes total sense! I knew there had to be a very good reason...

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