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28 pins Project

Eoliveira , 09-14-2018, 08:13 AM
Hello Everyone !!

Hello Robert !!!

Could you help me ?

In arduino 28 pins Project We use via with 0.3mm hole size ....

I was watch notes about hardware design, Via Aspect Ratio.

My questions is ...

1. What kind of vias We use in this project ? I think ... Blind vias ??? . Am I correct ?

2. The thickness of board is 1.6mm , Is enough to use a Via this type to connect TOP e BOTTOM Layer ?

Sorry I'm a little confuse about this

Thank you

robertferanec , 09-17-2018, 12:19 PM
1) Through hole VIAs.
2) It is fine. Usually the ratio is 1:10 or 1:12. For this kind of board, usually the smallest through hole can be 0.15mm .... this means, 0.3mm is perfect and it is also cheap.
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