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
Suppose one is hand-assembling a board with many SMT components. Unlike THT, SMT components are often not labeled. How might one keep small (<100) quantities of such parts properly organized during assembly? Are there particular tools? Storage devices? Methods?
What I would like to know is if ICs also have a limited shelf life and if so, do some types suffer more than others?
I’m using some 0.1% precision 10k and 150k resistors. They are thin film 0603 surface mount. For a lot more, there are also thick film types. Fundamentally and practically, what is the difference between these two?
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