What aspects does the appearance quality inspection of electronic components include?

Date：2021-10-19 16:10:55 Views：1939

With the development of science and technology, there are more and more kinds of electronic components, about 10000 kinds. Its application fields are also very wide, such as thyristor (SCR), inductance coil, transformer, crystal oscillator, earphone, resistance, capacitance, etc. they all use electronic components. In the production process, any product will produce some bad appearance, of course, electronic components are no exception. What aspects does the appearance quality inspection of electronic components include?

The identification and testing of electronic components shall be carried out in accordance with the following provisions:

1. Check that the model, specification, manufacturer and place of origin of components must meet the design requirements, and the outer packaging must be intact.

2. The electrode lead of electronic components shall be free from bending and bending, and the coating shall be complete without oxidation and corrosion.

3. Check whether the appearance of electronic components is complete and whether there are dents on the surface Scratch Cracks and other defects, such as components coated with outer coating, shall not fall off or wear.

4. The model and specification identification of electronic components shall be clear Complete, color coded position The color meets the standard, and carefully check the characters on the IC.

5. The dimensions of mechanical structural parts shall meet the requirements, the threads shall be elastic and feel good.

6. Switching elements are flexible and feel good; The plug should be tight and have good contact.

Components in various electronic products have their own characteristics. During inspection, the inspection contents shall be determined according to the specific requirements of each component,The appearance inspection equipment of electronic components usually includes optical microscope and metallographic microscope.

Usually, electronic devices need to detect all kinds of external concave convex, especially the so-called protruding angle, burr, etc. if detected by human eyes, various problems will occur, so appearance detection equipment needs to be used to realize it. CCD automatic vision detector has high detection efficiency and high detection accuracy when detecting induction. The CCD automatic visual inspection device can directly extract the appearance image of electronic parts, and recognize the first area from the appearance image when it is judged that the appearance image is available. The appearance image is detected according to the first area, and the detection results of electronic components are generated by one click. The good products and bad products are automatically separated, which solves the problem of product quality to a great extent.

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