The bare circuit board may be assembled on different levels. A cheaper level of the board may have some missing parts that go into a final product at a cheap level. Some boards with special features tend to face the same problems, too. Label part numbers to help identify this problem.
By the way, the assembled board might have a stick-on label with the final assembly number.
#PCB Assembly
I am a buyer in a telecom company. Recently, an important order of SMT PCBA is delayed due to insophiscated production of a supplier. I am thinking about replace it and just very puzzled about how did their SMT pad fall off easily when soldering the PCB boards. That slows down the whole process.
I have a professional question about BGA package. Why is BGA (Ball Grid Array) socket not considered as an actual CPU socket? Anybody knows?
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?
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