Basic Industrial Connector Selection Principles

As one of the commonly used equipment, we will encounter some problems in the selection process. If we can understand the following 11 basic principles of 4 pin heavy duty connector selection in advance, it will be easier for us to find 6 pin heavy duty connector products that meet our requirements.

1. Current carrying:

When selecting the connector heavy duty of the power signal number, pay more attention to the current carrying of heavy duty 2 pin connector, adopt a derating design, and pay attention to the insulation withstand voltage between the pins.

2. Structural size:

The shape and size of the heavy duty connector 16 pin are very important. There are certain space limitations for the connection in the product, especially the heavy duty connector 5 pin on the single board, which cannot interfere with other components. According to the use space. The installation parts should choose the appropriate installation method (installation before and after installation, the installation fixing method is rivets, screws, clamps or heavy duty connector 6 pin itself quick lock, etc.) and shape (straight, bent, T, round, square).

3. Impedance matching:

Some signals have impedance requirements, especially radio frequency signals, which have stricter requirements for impedance matching. Impedance mismatch will cause signal reflection, thereby affecting signal transmission. General signal transmission has no special requirements for the impedance of the connector.

4. Shielding:

With the development of communication products, EMC has received more and more attention. The selected connector needs a metal shell and the cable needs a shielding layer. The shielding layer should be connected to 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 weld the cable shielding layer to the copper skin.

5. Anti-misplugging:

There are two aspects to anti-misplugging: On the one hand, the connector itself is rotated 180 degrees. Misaligned wrong connection leads to wrong signal connection. At this time, attention should be paid to selecting anti-misplugging connectors as much as possible, or uniquely assembling 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, the A plug may be inserted into the B socket. At this time, it should be noted that if this happens, it will cause serious consequences (not simple warning and destructive), and the A.B interface must be selected as different types of sockets (for example, A is male and B is female).

6. Reliability:

The connector is used to connect signals, so the connection parts need more reliability, such as face contact is generally better than point contact, pinhole type is better than spring type, etc.

7. Versatility:

In the process of selecting connectors, general materials should be selected as much as possible, especially between products in the same series. The selection of connectors has strong versatility, reducing material types, increasing quantity, reducing costs, and reducing supply risks.

8. Use environment:

Connectors have special requirements for outdoor, indoor, high temperature, high humidity, salt spray, mildew, cold and other environments.

9. Plug-in and unplug frequency:

The plug-in and unplug life of the connector is certain. After the number of plug-in and unplugging reaches the limit, the performance of the connector will decrease. When some signal interfaces need to be plugged and unplugged frequently, more attention should be paid to the number of plug-in and unplugging of the connector when selecting the connector.

10. Live:

Choose a pin-type or hole-type connector depending on whether it is often live.

11. Comprehensive consideration:

In the process of selecting connectors, various factors are not independent and often interact with each other. Therefore, in the process of selecting connectors, we should consider comprehensively and choose the appropriate connector. The selection at different stages will affect the use of the product to varying degrees.