Matters Needing Attention When Selecting Various Industrial Connectors

PublishTime： 2023-04-13 Article Source：valnk Knowledge base

What is the connector?

The industrial connector is an indispensable key component in industrialization because it is widely used in aerospace industry, also known as an aviation socket and aviation plug. Connectors are widely used in an intelligent manufacturing system, aerospace, high-speed railway motor car, automatic control, urban rail, 5g communication, and other industries because of their strong universality, various specifications, models, and perfect processing technology.

Connector classification

According to the appearance design, it can be divided into circular connectors, small connectors, and micro connectors. According to the main purpose of industrial production, it can be divided into switching power supply and connector.

How to select a connector (selection specification)

1. Structural specification of connector: the size is very important. The connection in the commodity has certain indoor space restrictions. Especially on the single board, it cannot interfere with other parts. According to the application of indoor space, appropriate installation methods shall be selected for the installation part (before and after installation, and the installation and fixing methods include screws, circlips, bolts or quick locking, etc.) And appearance design (straight, curved, t, round, square).

2. Shielding characteristics of connector: with the development trend of communication equipment, EMC becomes more and more important. The industrial connector must have a metal shell, and the cable must have a shielding layer. The shielding layer is connected with its metal shell to achieve the actual effect of shielding. The injection molding processing method can also be selected. The power plug is packaged with copper, and the cable shielding layer is welded with copper.

3. The design scheme of connector anti-false contact plug: the anti false contact plug has two aspects: on the one hand, the connector rotates 180 degrees, resulting in an incorrect signal connection. At this time, attention must be paid to selecting the anti-miscontact plug, or connecting according to the relative position of the connector to make the installation unique; On the other hand, in order to reduce the type of raw materials, several signals choose the same connector. At this time, a power plug is likely to be inserted into B power plug. At this time, it must be noted that if this happens, it will cause serious harm.

4. The characteristic impedance of connector: some signals have characteristic impedance regulations, especially for frequency transmission signals. The matching resistance regulations are more strict. Mismatched characteristic impedance will lead to signal reflection surface and then damage signal transmission. General signal transmission has no special requirements for the characteristic impedance of the connector.

5. Stability of connector: it is used to connect signals, so the connection part should be reliable (for example, face contact is better than point contact, needle eye is better than leaf spring, etc.).

6. Application environment of connector: there are unique regulations for connectors in outdoor, indoor, high temperature, high humidity, corrosion resistance, mold, severe cold, and other environments;

7. Practicability of connector: in the whole selection process, especially between the same product series, the selection of connector has strong practicability, which can reduce the type of raw materials, control costs, and reduce supply risks;

8. Whether the connector has a locking function: in order to better avoid the problem of the connector falling off during pairing, the connector is required to have a locking function to ensure good contac.

9. Cost is also the key factor in the whole process of connector selection: With the increasingly fierce market demand, the cost of the connector and its production cost must be comprehensively considered;

10. Pluggable frequency of connector.

11. Whether the connector can be used in an extreme environment: Nowadays, there are many extreme environments, and there are many kinds of special connectors for extreme environments in the connector design scheme, which can be selected according to the specific situation, among which the environment of heat resistance, high-temperature resistance, moisture resistance, corrosion resistance, salt-resistance and so on are the choice of finished products.

12. A well-known brand of connector: the key quality of the connector is reflected in the internal structure and design scheme of the commodity, especially the route, which can not be seen by human eyes. Therefore, when purchasing, you must remember to see the well-known brand and appearance, and it is best to specify the warranty period;

The application of the connector production process is more and more systematic, with a large number of technical elements. It will be more integrated into the sales market, carry out diversified and personalized product R & D, and integrate a large number of environmental specification requirements.

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