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what's the difference between a thru vias and a blind via?

C.W

#29759

what's the difference between a thru vias and a blind via? | 30 July, 2004

what's the difference between a thru vias and a blind via?

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#29764

what's the difference between a thru vias and a blind via? | 30 July, 2004

Search for "SMT Terms and Definitions" in the "Library & Bookstore" tab in the light blue area on the left of your screen.

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Dave

#29766

what's the difference between a thru vias and a blind via? | 30 July, 2004

Consider a 6 layer board. The Through via gets drilled from top layer to bottom layer. All 6 layers has the hole drilled in it. A blind via is a via that does not got through the entire 6 layers. It would go from layer 1 to layer 2. or layer 6 to layer 5. There is also a buried via, they are vias drilled on inner layers creating inner layer pairs. Hope it helps

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C.W

#29775

what's the difference between a thru vias and a blind via? | 31 July, 2004

thanks!

So, why via in pad design is implemented? what's the advantages of it?

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Bob R.

#29799

what's the difference between a thru vias and a blind via? | 2 August, 2004

Via in pad lets your layout guy run traces on inner layers so there's more more area available on the outer layers for placing parts, test point, etc. There are also electrical advantages due to shortening paths, but I'm just a simple mechanical engineer so that stuff is beyond me.

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