Connector connectors are electronic components used in modern manufacturing and are important in improving the manufacturing process. In our production and daily life, connectors are used in electronic products. Without connectors, electronic products are useless decorations. Connectors are just accessories, but their dual importance is the same, especially in the time of information transmission in electromechanical equipment, which highlights the important role of connectors. Therefore, when choosing connector plugins, we mainly consider the following perspectives and make a comprehensive evaluation before making a choice.
1. Structural dimensions: The external dimensions of connectors are very important, and there are certain space limitations for connections in products, especially for connectors on single boards, which cannot interfere with other components. Choose the appropriate installation method based on the usage space and installation location (including front installation and rear installation, with installation fixing methods such as screws, snap rings, rivets, or quick locking of connector pins) and shape (straight, curved, T-shaped, circular, square);
2. Impedance matching: Some signals have impedance requirements, especially RF signals, which have stricter requirements for impedance matching. Impedance mismatch can cause signal reflection, thereby affecting signal transmission. There are no special requirements for the impedance of connectors in general signal transmission
3. Shielding: With the development of communication products, EMC is increasingly valued. When selecting connectors, a metal shell is required, and cables need to have a shielding layer. The shielding layer should be connected to the metal shell of the connector to achieve shielding effect. Injection molding can also be used to wrap the plug part with copper foil, and the shielding layer of the cable is welded to the copper foil.
4. Anti misoperation: Anti misoperation has two aspects: one is the connector itself. The connector itself rotates 180 degrees or is misaligned, resulting in incorrect signal connections. At this time, it is necessary to choose anti misoperation connectors as much as possible, or adjust the relative position relationship of the connectors to make the assembly unique; On the other hand, in order to reduce the variety of materials, several signals use the same connector. At this time, it is possible to plug plug A into plug B. It is important to note that if this situation occurs, it will cause serious consequences (not simple alarms, with destructive effects), and the A and B interfaces must be selected as different types of sockets.
5. Reliability of connectors: Connectors are used to connect signals, so the connection parts should be reliable (such as surface contact being better than point contact, pinhole type being better than leaf spring type, etc.)
6. Operating environment: When the connector is used in outdoor, indoor, high temperature, high humidity, salt spray, mold, cold and other environments, there are special requirements for the connector.
7. Universality: In the process of selecting connectors, it is important to choose universal objects as much as possible, especially between products of the same series. The selection of connectors has strong universality, reducing material types, increasing quantity to reduce costs, and reducing supply risks.
8. Locking function: In order to prevent the connector from coming off during mating and ensure good contact, the connector needs to have a locking function.
9. Cost: Cost is also an important factor in the selection process. With the increasingly fierce market competition, the appropriate selection of connectors requires comprehensive consideration of their own costs and processing costs.
10. Supply situation: The supply of connectors will be affected by various factors, and universal connectors have better supply situation than non universal connectors. Domestic production has better supply situation than foreign production.
11. Insertion and removal frequency.
12. Connectors: Connectors can better reflect their environmental performance in terms of external material design, as the external environment is extremely complex. Only by adapting to these complex environments can their performance be guaranteed. Otherwise, not only can they not work well, but they may also pose a danger. There are also many harsh environments nowadays, and there are many types of connectors commonly used in connector design for harsh environments. You can choose according to your actual needs, including finished products that are resistant to high temperatures, high humidity, corrosion, salt, and other environments.
13. Brand and appearance: Because the main quality of connectors is internal, especially the internal wiring, which cannot be seen by the naked eye, it is important to remember to check the brand and appearance when purchasing, and it is best to request warranty.
The production process and application of connector connectors are becoming increasingly specialized, with more technological elements, and will also be more suitable for diversified and humanized research and development in the market, adapting to more environmental standard requirements.
