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Introduction of Fabrication Method of Semiconductor-discharge Tube
The application of the new touch for the maintenance of communication equipment discharge tube, detailed is a kind of semiconductor discharge tube. The discharge tube is a commonly used overvoltage maintenance device in modern communication equipment, which can prevent the communication equipment from being damaged by lightning strike and surge. At present, the conductors in the wired communication network are metal wires and optical fibers. The conductors are installed outdoors, which will inevitably be affected and destroyed by nature and man-made. Lightning, power line induction and touch will introduce communication equipment to form communication equipment damage or casualties. With the development of modern communication industry, people pay more and more attention to the maintenance of communication equipment. The International Telecommunication Union and China have successively formulated corresponding specifications, requesting that telecommunication equipment must be designed with measures to prevent lightning strikes, power surges, power line sensing and power line touching. Only after passing through relevant specifications can they enter the network and use them.
At present, the overvoltage maintenance of communication equipment in our country basically uses gas discharge tube as the maintenance device, but the gas discharge tube has defects such as slow response speed, short service life, large parameter dispersion, high pulse ignition voltage, open circuit state after failure, high maintenance cost, unreliable maintenance, etc., which greatly reduces its maintenance function. Corresponding to the gas discharge tube is also a solid-state discharge tube, which is commonly a button-type solid-state discharge tube. Its performance is greatly improved compared with the gas discharge tube, but its size is too small, the device is inconvenient, and it is not suitable for various size requests. Therefore, it is encapsulated again in a shell of similar size as the gas discharge tube. However, due to the additional secondary encapsulation cost and low scrap rate, the device cost is high.
The above-mentioned solid-state discharge tube and other types of solid-state discharge tube, according to the utility model patent 92231151.X disclosed a butterfly-shaped solid-state discharge tube, etc., all have the defect of insensitive size, and all fail to apply the advantages of small geometric size of semiconductor devices, which is not conducive to the miniaturization of communication equipment. In addition, since the overvoltage alarm function of the security unit is clearly regulated in the revised version of the general distribution frame industry specification, the original gas discharge tube or the solid-state discharge tube with an appearance similar to the gas discharge tube needs to add structural parts with alarm function, which makes the structure of the general distribution frame more complicated, the assembly and debugging are complicated, and the manufacturing process is improved. The above reasons make the original solid discharge tube can not be widely used in China's communication equipment.
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