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What’s the actual benefit of using via-in-pad for BGA routing?

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Twilight-peng

Joined Jul 14, 2025
1
I'm designing a compact RF module with a fine-pitch BGA.

Thinking of using via-in-pad for space reasons, especially since some PCB manufacturers now offers it for free.

Are there any performance or DFM issues I should watch out for?
 
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MisterBill2

Joined Jan 23, 2018
27,159
Twilight-peng said:
I'm designing a compact RF module with a fine-pitch BGA.

Thinking of using via-in-pad for space reasons, especially since some PCB manufacturers now offers it for free.

Are there any performance or DFM issues I should watch out for?
Click to expand...
One obvious detail is that the via will drain away solder, and so you need to deal with that reality.
 
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