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QUESTION: WHAT IS VIA ASPECT RATIO?

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#74229

QUESTION: WHAT IS VIA ASPECT RATIO? | 16 July, 2015

Hi,

Question 1: can anyone explain me what the VIA ASPECT RATIO is?

Question 2: Let's say that a PCB manufacturer specifies a VIA ASPECT RATIO of 8:1. Can I have vias of drill diameter of 0.1 mm on a 2L board 1.6 thick?

thanks, Enrico Migliore

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#74233

QUESTION: WHAT IS VIA ASPECT RATIO? | 17 July, 2015

A1: In PCB fabrication, the aspect ratio is the thickness of a PCB divided by the diameter of a drilled hole. It's an indication of the ability of the chemical processes to plate copper in the holes.

A2: No. (1.6/0.1) = 16. 16 > 8

Best davef

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#74244

QUESTION: WHAT IS VIA ASPECT RATIO? | 20 July, 2015

Hi davef,

thank you for your answer.

Enrico Migliore

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