Selection requirements for electronic connectors

- 2022-05-07-

The authoritative expert in the connector field - ShenZhen HuaYi-FaDa Technology CO., Ltd. today introduces you to the selection requirements of electronic connectors.
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Electronic connectors are a component that electronic engineering technicians often come into contact with. Its function is simple: to be blocked or isolated between circuits, a communication bridge is set up to allow current to flow and the circuits to perform their intended function. Connectors are an integral part of electronic equipment. When looking at the current path, there is one or more connectors. The form and structure of connectors are constantly changing.
Different types of connectors have different application objects, frequencies, power, and application environments. For example, connectors used for stadium lighting are very different from those used for hard drives and those used to light rockets. However, no matter what kind of connector is used, the current must flow smoothly, continuously and reliably. Generally speaking, aviation plugs are not only connected to electricity. With the rapid development of optoelectronic technology, in the optical fiber system, the carrier of signal transmission is light, glass and plastic, instead of wires in ordinary circuits. However, connectors are also used for optical signal paths and function the same as electrical connectors.
 
electronic connector
 
For example, the aviation plug is not only a simple interface component in aerospace systems engineering, but its reliability directly affects the success or failure of aerospace systems engineering. In addition to the advanced design technology level, the important factors affecting its process performance and service performance should also be very careful when selecting materials.
So what requirements should aviation plug materials meet?
The selected materials should have the advantage of light weight, because weight is of great significance to improving the technical performance indicators and economic benefits of spacecraft. In addition to light weight, it also has good corrosion resistance, so most of the aviation plugs used in aerospace system engineering are aluminum alloy shells. Since aviation plugs are mainly used in aerospace environments, they are easily affected by temperature and radiation. The materials selected should be resistant to temperature difference and radiation. Generally, PVC plastics are not provided. In addition, considering the safety of the spacecraft, the selected connectors should have the advantages of non-toxic and flame-retardant. You can also choose some materials that can quickly self-extinguish when burning and produce a small amount of salt spray. The selected connector shell material should ensure that the designed structural strength, forming process and rigidity meet the requirements of the space system. For example, duralumin is selected for shell processing, because duralumin has good machinability; die-cast shell cast aluminum has good fluidity and compactness; cold extrusion shell adopts forged aluminum with good cold deformation plasticity; glass sintering The shell and contact parts of the sealing joint should be made of low-expansion alloys, because the expansion coefficient of these materials matches the number of the glass expansion system; some elastic parts such as claws, springs, short-circuit rings and snap rings are mainly used for positioning, locking and shielding, etc. effect. , so the selected material should have reliable elastic function. In the medium environment, the aviation plug can be stored for up to 8 years. After a long period of storage, reliable performance has always been a concern of many users. In order to ensure its reliable performance, the selected metal casing should have anti-corrosion and anti-aging functions. Multi-molecular materials such as metal shells and insulators should be subjected to aging analysis and inspection before use after long-term storage.