There are many electronic components, such as resistors, capacitors, chips, diodes and triodes, etc. The application fields of electronic components are also very wide, such as thyristors (thyristors), inductors, transformers, crystal oscillators, headphones, resistors, capacitors, etc., which all use electronic components. Any product will have some bad appearance during production, and electronic components are of course no exception. So, how to check the appearance quality of electronic components?

One. How to check the appearance quality of electronic components

When identifying and testing electronic components, the following operations should be followed:

1. To check the model, specification, manufacturer and origin of the components must meet the design requirements, and the outer packaging is in good condition.

2. The electrode leads of electronic components should be free from folds and bends, and the coating should be in good condition and smooth without oxidation and rust.

3. Check that the appearance of electronic components must be intact, whether there are defects such as dents, scratches, cracks, etc. on the surface, and components with coatings on the outside must be free of shedding and scratches.

4. The model and specification marks on the electronic components should be clear and complete, the position and color of the color code should meet the standards, and the characters on the integrated circuit should be carefully checked.

5. The size of the components of the mechanical structure should be qualified, the thread is flexible, and the rotation feel is suitable.

6. The switch components are flexible in operation and feel good; the tightness of the connectors should be appropriate and the contact is good.

The components in various electronic products have their own characteristics, and the inspection content should be determined according to the specific requirements of each component during inspection.

Two. Recommendation of electronic components appearance testing equipment

Generally, electronic components need to detect various external concavities and convexities, especially the so-called convex corners, burrs, etc. If it is detected by the human eye, various problems will occur, such as people‘s mental state problems, emotional status, etc. It affects the accuracy of the appearance inspection, resulting in an increase in the defective rate of the product, or some defects cannot be detected by the human eye, so it is necessary to use appearance inspection equipment to achieve it. The following are the recommendations of the appearance inspection equipment for electronic components:

1. CCD automatic visual inspection equipment

CCD automatic visual inspection equipment, when detecting inductance, the detection efficiency is very high, and the detection accuracy is also very high. The ccd automatic visual inspection equipment can directly extract the appearance image of electronic components. When it is judged that the appearance image is available, the first area is identified from the appearance image, the appearance image is detected according to the first area, and the detection result of the electronic component is generated with one click. , the good and bad products are automatically separated, which solves the problem of product quality to a large extent.

2. One-button measuring instrument

The one-button measuring instrument equipment is also independently developed by Ruizhi Optoelectronics, mainly for sampling and testing electronic components, which can realize small-scale sampling in large quantities, and is also a reduced version of ccd automatic testing equipment.