What causes the inconsistent height of connector pins?

Infineon / Mitsubishi / Fuji / Semikron / Eupec / IXYS

What causes the inconsistent height of connector pins?

Posted Date: 2024-01-28

Inconsistent heights of connector pins may be caused by a variety of factors, including but not limited to the following:

  1. manufacturing tolerances: During the production process of the connector, each pin will have certain manufacturing tolerances, which may result in small differences in pin height.
  2. wear and corrosion: After long-term use or working in harsh environments, the pins of the connector may be affected by friction and corrosive substances, resulting in changes in the height of the pins.
  3. Installation issues: If the connector is improperly handled during installation, the pins may be bent or misaligned, resulting in inconsistent heights.
  4. Improper crimping: When crimping the pins of the connector, if the pressure is too high or too low, it may cause the pins to deform or be poorly connected to the PCB board, thus affecting the high consistency of the pins.
  5. Material properties: Different materials have different elastic modulus and yield strength. These material properties will also affect the shape and height of the pin after being stressed.
  6. Design flaws: The design of the connector is unreasonable, such as the pin arrangement is too dense or the pitch value is improperly selected, which may also lead to inconsistent pin heights.

In general, in order to avoid these problems, standards should be strictly followed during the design and production of connectors to ensure the dimensional accuracy and crimping quality of the pins. At the same time, during use, the connector should be checked and maintained regularly to avoid inconsistent pin heights caused by environmental factors or mechanical damage. If it is found that the connector pins are inconsistent in height, the cause should be found in time and repaired or replaced to ensure the normal operation of the electronic equipment.

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