Hi everyone!

I am designing a PCB that requires all type of the micro via.
Does anyone have any information about name of the via type like a PTH,NTH,IVH,BVH ?
I need some  basic info on VIA TYPE that HDI BOARD.
I know it's alot of type, what actually is a name of via.

We have 4types of via , next is one of our layer option.(6layer board)
1TO2,2TO3,1TO3 (HOLE SIZE 0.1~0.2mm)
2TO5(HOLE SIZE 0.2~0.3mm)
4TO5,5TO6,4TO6 (HOLE SIZE 0.1~0.2mm)
etc (PTH,NTH,OBLONG..)

Are there any "TechNetters" currently using above via type?
If so, what are your name of the via.
Does anyone know a simple method to define above type ?
Thank you in advance .....!

Thanks your reply.

Jae-Heun Joung

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