There are many types of terminal pins, such as PIN pins, four-point pins, etc. Compared with the terminal series products of electronics and automobiles, the relative tension of the inductive guide pins will be lower, and sometimes the tension will be insufficient for a long time. To know what is causing it, we need to analyze the properties of the material and mechanical life of the inductance guide pin of the terminal.

Terminals, inductance guide pins, insufficient tension

You can click to analyze the different factors of the inductance guide pin pull force of the terminal:

1. The I-shape relies on glue to meet the tensile requirements, while the general framework is made of plastic stress. In comparison, the reliability of glue is worse. If required, molded plastic can be used as the base, and the needle is inserted into the base, which will improve the effect.

2. In addition, if there is too little glue, it will cause the inductance pins of the terminal to fall off, and the adhesion of the glue will be too poor to make the bonding of the pins weak.

3. After the parts are soldered, the glue for bonding the inductance guide pin of the terminal is aging due to high temperature, and the viscosity becomes poor, which will cause insufficient pull of the guide pin, and even cause the guide pin to loosen and fall off during the turnover process. Generally, the dispensing dose is too small, or The glue is caused by poor temperature resistance.

4. The larger the atomic weight of the metal, the softer the metal will be. High-purity copper is a very soft metal material. The hardness of the steel needle is not in the same grade! However, its conductivity is the opposite! The larger the atomic weight, the better the conductivity!

5. Good glue can increase the stability of the inductance guide pin of the terminal, even if the fixed position of the guide pin is broken, it will not loosen.

The physical factors that lead to the low relative tension of the inductance guide pin of the terminal can basically be summarized by the above 5 points. The use of the terminal is the most important position for the use of the guide pin. Therefore, to strengthen its performance, we must try to avoid applying the above points. Unsuitable way