Structural design factors: Satisfaction of the transmission function of the automotive connector terminal is the basis that the terminal must comply with before design. The terminal design and actual production cost need to be strictly controlled, which also leads to the necessary compression of the amount of raw materials used in the actual production of the terminal. Through the analysis of its design and production process, it is not difficult to find that the terminal has a bottleneck structure, and this bottleneck structure is a cross-sectional structure in the conductive surface of the terminal, which will have a great impact on the current carrying capacity, and then affect the conductive performance of the terminal. Generally speaking, two basic standards are proposed for the conductive surface of the automotive connector terminal. One is that in order to ensure the excellent basic performance of the pin and socket terminals, the surface of the pin terminal needs to be highly smooth, and its roughness usually cannot exceed 0.8;

Second, the most important function of the automotive connector is to transmit current and signals. Therefore, when designing the pin, its cross-sectional area needs to be larger than the cross-sectional area of ​​the crimped cable, so during the design and production process, the cross section must be properly handled and controlled to ensure the integrity of the terminal's conductive performance.