Not recommended, because some solder will wick down to the other side and the component on top will not solder correctly.
Remedial measure:
Remark: Before designing via-in-pad, don’t forget to talk to your PCB fabricator to find out what their capabilities are, and how much extra this costs.
Read More: What is PCB Via
#PCB Manufacturing
It is the first time I place a prototype order to a manufacturer for my research. And I want to know how a common prototype looks like.
Recently we are developing a portable device which should be very tiny and light. In terms of PCB design, I am thinking whether it is a good idea to exclude ground plane to minimize the product size.
I’m working on a project which requires the use of a CSP package. The product’s datasheet provides ball pitch and ball diameter but nothing about the preferred land pad diameter.
How can the pad diameter be worked out from these figures assuming an NSMD land?
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