[SI-LIST] Search for the paper about minimum BGA pad size in PCB
- From: "Pang Ning" <pangning2000@xxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Thu, 16 Jun 2005 18:12:43 +0800
Dear Expert,
I encountered a problem about BGA pad size in PCB. The actual ball size is
0.6mm, and ball pitch is 1.0mm. We plan to route two 5mil traces between two
adjacent pads, and reserve over 5mil spacing for trace/trace, trace/pad(or
via). But in this way the BGA pad size in PCB will be only 14mil.
I'm wondering if 14mil BGA pad is too small for mass production. Is there any
paper that demonstrates the guideline for BGA ball size vs. minimum pad size in
PCB? Can anyone provide me the linkage for the paper? Thanks in advance!
Best Regards,
Peter Pang
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