The first piece test of SMT patch proofing is very important. As long as the component specification, model, and polarity direction of the first piece are correct, the machine will not place the wrong components during mass production. If the offset is correct, the machine is generally able to ensure the repeatability of the mass production.
Some common methods of first piece testing are introduced. Generally, different testing methods are selected according to the different production requirements of patch processing.
7. LCR measurement . This test method is suitable for some simple circuit boards. The components on the circuit board are not so much. There is no need to reheat after the completion of the printing.
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