The role of the coating of the waterproof USB socket

Waterproof USB socket_waterproof USB connector, as the name suggests, is a USB socket and connector with waterproof function.

There are many kinds of USB sockets, and the USB sockets mentioned by the editor are not the kind of finished plug-in sockets, but semi-finished products, a kind of parts. The waterproof USB sockets mentioned here are waterproof USB connectors.

Waterproof USB socket_basic performance of waterproof USB connector

1. Electrical properties: The main electrical properties of the USB socket include contact resistance, insulation resistance and electrical strength.

Second, environmental performance: the environmental performance of the USB socket common environmental performance includes temperature resistance, humidity resistance, salt spray resistance, vibration and shock and other properties.

3. Mechanical properties: including the mechanical life of the USB socket and the USB connector, it is based on one insertion and one unplugging as a cycle, so as to determine whether the USB socket can normally complete its connection function after the specified plugging and unplugging cycle. as a basis for judgment.

Mechanical Properties In terms of connection function, insertion force is an important mechanical property. The insertion force is divided into the insertion force and the extraction force (the extraction force is also called the separation force), and the requirements of the two are different.

The role of waterproof USB connector plating

1. The surface of the ordinary metal coating is covered with an oxide film to ensure that the oxide film is broken when the waterproof USB socket is mated, and that the contact interface is no longer oxidized.

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

Third, the plated USB socket is not easy to be oxidized and vulcanized.

Fourth, play the role of optimizing the electrical performance of the USB socket, build and maintain a stable USB socket impedance.

Fifth, it can improve the mechanical properties of the USB socket to a certain extent and enhance its wear resistance.

The development of waterproof USB connectors should be the development direction of high-speed transmission, miniaturization, high density and high frequency.

1. High-speed transmission means that modern computers, information technology and networking technology require the time-scale rate of signal transmission to reach the megahertz frequency band and the pulse time to reach sub-milliseconds. Therefore, high-speed transmission waterproof USB sockets and waterproof USB connectors are required.

2. Miniaturization refers to the smaller distance between the centers of the waterproof USB sockets.

3. High density means that the waterproof USB socket can achieve a large number of cores. The total number of effective contacts of the high-density PCB waterproof USB socket reaches 600 cores, and the number of special devices can reach 5000 cores.

4. The high frequency is to adapt to the development of millimeter wave technology, and the RF coaxial waterproof USB sockets have entered the millimeter wave working frequency band.

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