What's the major difference between a blind via and a buried via in a PCB design?

What's the major difference between a blind via and a buried via in a PCB design. And when it's it good to use it in a design other than using a through hole via @PCB & Analog

Solution

Blind via is where the board is not drilled throughout

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Solution

gKarthikSaiAPP•4/8/24, 11:49 AM

Blind via is where the board is not drilled throughout

gKarthikSaiAPP•4/8/24, 11:49 AM

gKarthikSaiAPP•4/8/24, 11:50 AM

You can go for them in a bga package if you want to lower the layercount

gKarthikSaiAPP•4/8/24, 11:50 AM

But it is a tradeoff between redusing the layers or using blind and burried cause they are expensive to manufacture and most manufacturers don't support blinds and burrieds

Joseph OgbonnaAPP•4/8/24, 11:51 AM

Sometimes using microvias reduces the cost of your PCB board. According to Happy Holden (aka, God Father of HDI), before using this you should plan for it in your stackup and throughout your design. It can reduce the total cost and layers of your board if planned appropriate.

Joseph OgbonnaAPP•4/8/24, 11:51 AM

But it's more useful in sophisticated designs that uses bga. Using this also helps for better Signal Integrity in your board.

What's the major difference between a blind via and a buried via in a PCB design?

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