The quality inspection of PCB circuit boards generally includes appearance inspection, connectivity inspection, and solderability inspection.
1. PCB circuit board appearance inspection standard
1. Whether the surface of the PCB circuit board is smooth and flat, whether there are bumps or scratches. Whether the through hole has leaked drilling, wrong drilling or the phenomenon that the surrounding copper foil is drilled.
2. For the integrity of the wire pattern, cover the PCB circuit board with a photographic film, and measure whether the width and shape of the wire meet the requirements. Whether there are trachoma or broken wires on the printed line, whether there are jagged gaps on the edge of the line, and whether the wires that should not be connected are short-circuited.
3. Whether the outer edge size of the PCB circuit board meets the requirements.
2. PCB circuit board connectivity inspection standard
Multilayer PCB circuit boards need to be tested for connectivity. Usually use a multimeter to check whether the PCB circuit board circuit is connected.
3. PCB circuit board solderability inspection standard
To test, when soldering components to the PCB circuit board, the wetting ability of the solder to the PCB circuit board pattern. The quality inspection of PCB circuit boards generally includes appearance inspection, connectivity inspection, and solderability inspection.
1. PCB circuit board appearance inspection standard
1. Whether the surface of the PCB circuit board is smooth and flat, whether there are bumps or scratches. Whether the through hole has leaked drilling, wrong drilling or the phenomenon that the surrounding copper foil is drilled.
2. For the integrity of the wire pattern, cover the PCB circuit board with a photographic film, and measure whether the width and shape of the wire meet the requirements. Whether there are trachoma or broken wires on the printed line, whether there are jagged gaps on the edge of the line, and whether the wires that should not be connected are short-circuited.
3. Whether the outer edge size of the PCB circuit board meets the requirements.
2. PCB circuit board connectivity inspection standard
Multilayer PCB circuit boards need to be tested for connectivity. Usually use a multimeter to check whether the PCB circuit board circuit is connected.
3. PCB circuit board solderability inspection standard
To test, when soldering components to the PCB circuit board, the wetting ability of the solder to the PCB circuit board pattern. The quality inspection of PCB circuit boards generally includes appearance inspection, connectivity inspection, and solderability inspection.
