In-depth explanation of USB connector socket knowledge

USB socket is an electronic product that we often use or come into contact with in real life. We all call this product a USB plug and socket, but it is called a USB connector in the industry because this electronic product also has many connectors. One of the types. In the connector industry, there are many types of USB socket classifications and USB socket specifications, but the general functions are almost the same. Let's explain some industry knowledge of USB connectors.



The role of the metal plating of the USB connector socket:

1. The coated USB socket is not easy to be oxidized and vulcanized.

2. It can improve its mechanical properties to a certain extent and enhance wear resistance.

3. Optimize the electrical performance of the USB socket, establish and maintain the impedance of the USB socket.

4. The precious metal coating is relatively simple to contact the metal that produces the interface, and maintains the stability of the contact interface impedance

5. Generally, the surface of the metal plating layer will be covered with an oxide film to prevent the oxide film from cracking when the USB socket is mated, and to ensure that the contact interface is not oxidized.




The functions of the USB socket terminal electroplating are also beautiful, protecting and prolonging the life of the product, and coating the surface of the product with corrosion-resistant materials; in terms of mechanical or engineering properties, it also improves the lubricity of the product and the strength of the product, including improving the conductivity of the product, Improve light reflectivity, reduce contact resistance, improve product weldability, etc. In fact, the quality of a USB connector socket is a very important factor in the choice of the plating layer and material of the terminal. What about the plating and material selection of the USB connector socket terminal?



The influence of terminal material selection is:

1. Conductivity: smaller material resistance.

2. Extensibility: Help the USB socket terminal to be formed.

3. Hardness: reduce the wear of the metal of the USB socket terminal.

4. Yield strength: large displacement within the elastic range.

5. Stress relaxation: When the USB socket terminal is stressed for a long time or used at high temperature, the load resistance capacity can still be maintained.