2022-11-02
How to quickly judge whether a PCB is good or bad when there is no test tool on hand?
Today we are going to discuss, when we do not have a test tool, how to judge the PCB is good or bad?
First, the size and thickness of PCB board appearance must be consistent with the specified size and thickness, without deviation. The SURFACE SHALL BE FREE OF DEFECTS, DEFORMATION, SHEDDING, SCRATCHING, OPEN, SHORT CIRCUIT, OXIDIZED whitening, YELlowing, UNCLEAN OR EXCESSIVE ETCHING MARKS, AND THE surface shall BE FREE of stains, copper particles and other impurities.
Second, the ink cover is uniform and shiny, there shall be no shedding, scraping, copper exposure, offset, plate and other phenomena.
Third, the silk screen printing symbols and letters are clear, there is no leakage and ambiguity, reverse printing, offset and other adverse phenomena.
Fourth, the carbon film shall not have defects, offset, short circuit, open circuit, reverse printing and other phenomena.
Fifth, PCB bottom plate forming, no leakage hole, offset, hole collapse, edge, plug hole, beer burst, beer reverse, pressure injury and other phenomena.
Finally, whether the edge of PCB board is smooth, if it is V-CUT technology, it is necessary to pay attention to whether the V-CUT slot leads to wire breaking, whether the two sides are symmetric, etc.
Of course, there are many other tools to determine whether a PCB is good or bad. Welcome to our production test PCB.
First, the size and thickness of PCB board appearance must be consistent with the specified size and thickness, without deviation. The SURFACE SHALL BE FREE OF DEFECTS, DEFORMATION, SHEDDING, SCRATCHING, OPEN, SHORT CIRCUIT, OXIDIZED whitening, YELlowing, UNCLEAN OR EXCESSIVE ETCHING MARKS, AND THE surface shall BE FREE of stains, copper particles and other impurities.
Second, the ink cover is uniform and shiny, there shall be no shedding, scraping, copper exposure, offset, plate and other phenomena.
Third, the silk screen printing symbols and letters are clear, there is no leakage and ambiguity, reverse printing, offset and other adverse phenomena.
Fourth, the carbon film shall not have defects, offset, short circuit, open circuit, reverse printing and other phenomena.
Fifth, PCB bottom plate forming, no leakage hole, offset, hole collapse, edge, plug hole, beer burst, beer reverse, pressure injury and other phenomena.
Finally, whether the edge of PCB board is smooth, if it is V-CUT technology, it is necessary to pay attention to whether the V-CUT slot leads to wire breaking, whether the two sides are symmetric, etc.
Of course, there are many other tools to determine whether a PCB is good or bad. Welcome to our production test PCB.
