Because there are many kinds of car connectors, people can't remember, so it's very important to choose a suitable car connector. Automobile connectors have different classification methods. If they are classified according to the frequency they emit, we can divide them into high-frequency connectors and low-frequency connectors. When we buy it ourselves, we can make a good choice,

In the selection, we must select the correct model according to the corresponding characteristics.

1. Structure size: the overall size of the connector is very important. There are certain space restrictions in the product connection, especially the connector on the single board, which can not interfere with other parts. According to the use space and installation position, select the appropriate installation method (front installation and rear installation, installation and fixation methods include rivets, screws, circlips or quick locking of connector pins) and shape (straight, curved, T-shaped, round, square);

2. Shielding: with the development of communication products, more and more attention has been paid to the selection of connectors. The connector needs a metal shell, and the cable needs a shielding layer. The shielding layer should be connected with the metal shell of the connector to achieve the shielding effect. The injection molding method can also be used to wrap the plug with copper skin, and the shielding layer of the cable and the copper skin are welded together.

3. Connector reliability: the connector is used to connect the signal, so the connection part should be reliable (for example, the surface contact is better than the point contact, the pinhole type is better than the leaf spring type, etc.)

4. Versatility: in the process of connector selection, we should try our best to select common objects, especially between the same series of products. The selection of connectors has strong versatility, reducing the types of materials, increasing the quantity, reducing the cost, and reducing the supply risk.

5. Impedance matching: some signals have impedance requirements, especially RF signals, which are more strict on impedance matching. When the impedance does not match, it will cause signal reflection, thus affecting signal transmission. Generally, there is no special requirement for the impedance of connector in signal transmission

6. Use environment: when the connector is used in outdoor, indoor, high temperature, high humidity, salt fog, mold, cold and other environments, there are special requirements for the connector.

7. Anti misplug: there are two aspects of anti misplug: one is the connector itself, the connector itself rotates 180 degrees, the wrong connection leads to wrong signal connection, at this time, we need to pay attention to choose anti misplug connector as far as possible, or make the assembly unique by adjusting the relative position of the connector; On the other hand, in order to reduce the types of materials, several signals use the same connector. At this time, plug a into plug B may appear. At this time, it should be noted that if this situation will cause serious consequences (non simple alarm, with destructive), the A and B interfaces must be selected as different types of sockets.

8. Locking function: in order to prevent the connector from falling off when fitting and ensure good contact, the connector needs to have locking function.

9. Cost: cost is also an important factor in the selection process. With the increasingly fierce market competition, the proper selection of connector, its own cost and processing cost need to be considered comprehensively.

To see the electrical parameters of the automobile connector, the most important thing is the rated voltage of the automobile connector. The rated voltage, also known as the working voltage, mainly depends on the insulating material used by the machine and the distance between the contact pairs. Some components or devices may not be able to complete their functions when their rated voltage is lower than their rated voltage. In today's society, the role of automobile connector is becoming more and more important, so we must carry out regular maintenance.