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Defect definition of single side circuit board inspection
  • Date:2020-10-29
1. Pt surface: welding surface;
2. MT surface: assembly surface of parts;
3. Light defect: due to its poor quality, the performance and service life of printed circuit board may be reduced;
4. Minor defects: because of its poor quality, it will reduce the value of goods, but will not affect the performance and life of printed circuit board;
5. Conical hole: because the gap between the upper hole and the lower hole of the stamping model is too large, the cross-section shape of the hole of the punched parts is a horn shape opening to the assembly side of the parts;
6. Serious defect: the PCB can not be used for the purpose due to its poor quality;
7. Conical hole: because the gap between the upper hole and the lower hole of the stamping model is too large, the cross-section shape of the hole of the punched parts is a horn shape opening to the assembly side of the parts.

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