How to check the appearance quality of electronic components?

There are many electronic components, such as resistors, capacitors, chips, diodes and triodes. Electronic components are also used in a wide range of fields, such as thyristor (thyristor), inductor coils, transformers, crystal oscillators, earphones, resistors, capacitors, etc., which make use of electronic components. Any product in the production of some appearance will be bad, electronic components of course is no exception. So, how to check the appearance quality of electronic components?

1. How to check the appearance quality of electronic components?

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

1, to check the components of the model, specification, manufacturer, origin must be in accordance with the design requirements, the outer packaging is intact.

2. The electrode leads of electronic components should be free from folding and bending, and the coating should be intact and smooth, without oxidation rust.

3, check the appearance of electronic components must be intact, there is no sag, scratch, crack and other defects on the surface, such as external coated components must not fall off and scratch.

4. The model and specification marks on the electronic components should be clear and complete, and the color position and color should meet the standards. 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, switch components flexible operation, feel good; Connector tightness should be appropriate, good contact.