Wenzhou Langrun Electric Co.,Ltd
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According to the shape, the terminals can be divided into slice series, cylindrical series, and wire connector series.
1) The slice series terminals are made of H65Y or H70Y material, and the material thickness is 0.3-0.5.
2) Cylindrical series terminals are made of H65Y or Qsn6.5-0.1 material, and the material thickness is 0.3-0.4.
3) Wire Automotive Connector Terminals are divided into three types: U-shaped, fork-shaped and hole-shaped.
① The U-shaped terminal is made of H62Y2, H65Y, H68Y or Qsn6.5-0.1 material, and the material thickness is 0.4~0.6;
②Fork-shaped terminals are also called Y-type terminals. Y-type terminals are made of H62Y2 with a thickness of 0.4-0.6. Part of the surface is nickel-plated with good conductivity;
③ Hole terminals generally use H65Y and H65Y2 as the base material, and the material thickness is 0.5 to 1.0.
It needs to choose terminals with different coatings according to different connectors and different needs. For equipment that requires high performance, such as airbags, ABS, car ECU connector, terminals should be gold-plated to ensure safety and reliability. However, for cost considerations, partial gold-plating can be selected on the premise of meeting performance requirements.
The specific selection principles are:
① Ensure that the terminals are reasonably matched with the selected connectors.
②Choose the appropriate terminal for the wire diameter of the crimped wire.
③For single-hole waterproof connectors, choose a terminal whose tail can crimp the waterproof plug.
④Ensure the reliability of the connection. When selecting automobile wiring harness terminals, ensure good contact with electrical components and plug-ins, so as to minimize contact resistance and improve reliability. For example, surface contact is better than point contact, and pinhole type is better than leaf spring type. In the design, the connector with double spring compression structure (with very low contact resistance) should be preferred.
⑤ Impedance matching. Some signals have impedance matching requirements, especially radio frequency signals, which have stricter requirements for impedance matching. When the impedance is not matched, signal reflection will be caused, which will affect signal transmission. Therefore, when selecting automotive wiring harness terminals, you must choose impedance-matched terminals.
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