Automotive connecting terminals are an indispensable part of the automotive electrical system. This article provides a comprehensive explanation of the two main functions of automotive connecting terminals.

The first is electrical performance. Automotive connecting terminals should have good electrical conductivity and stable contact resistance, which can ensure the safety and reliability of the electrical system.

Next is mechanical performance. Automotive connecting terminals should have mechanical properties such as high strength, high wear resistance, and high corrosion resistance, and can be used under harsh conditions such as prolonged vibration, humidity, and high temperature, while maintaining tight connections and not loosening.

As an automotive connector in electronic products, its performance is crucial. The following are two main features of automotive wiring connectors:


1. Mechanical performance is one of the two major properties of automotive connecting terminals.

1）In the mechanical performance requirements of automotive connector manufacturers, insertion-and-extraction-force is one of the important performance indicators. From a usage perspective, the insertion force should be as small as possible, while the extraction force should be as large as possible, otherwise it will have a negative impact on the reliability of the connection.

2）Mechanical life is one of the two major properties of automotive connectors, belonging to the category of mechanical properties, used to describe the durability performance of connector terminals. The evaluation method for mechanical life is to use each insertion and extraction operation as a cycle, and determine whether the automotive connecting terminal can complete the connection function normally through the specified number of insertion and extraction times, thereby determining the length of mechanical life. Specifically, mechanical life is an important indicator for evaluating the reliability of connector terminals.

3）The insertion and extraction force and mechanical life of automotive connecting terminals are related to the following factors: contact structure, coating quality of contact parts, and the accuracy of contact arrangement dimensions.

2. The electrical performance of automotive connecting terminals is one of its most important properties.

1）Manufacturers of automotive connectors should produce high-quality terminal products to ensure low and stable contact resistance.

2）Evaluate the interconnection of automotive connecting terminals and the insulation performance between the terminals and the housing, with values ranging from several hundred mega-ohms to several thousand mega-ohms.

3）Electrical strength, also known as voltage resistance or dielectric withstand voltage, is used to measure the rated test voltage that can be withstood between automotive terminal contacts or between contacts and the housing.

4）The leakage attenuation of electromagnetic interference is an indicator used to evaluate the electromagnetic interference shielding effect of automotive connecting terminals. Similarly, when evaluating the electromagnetic interference shielding effect of metal terminals, it is also necessary to consider the leakage attenuation of electromagnetic interference, and the typical testing frequency is within the range of 100MHz to 10GHz.