Factors affecting the contact resistance of 3-way end corner connector

As an important component of electrical connection, the 3-way end corner connector's contact resistance is one of the key indicators to measure the electrical performance of the connector. The size of the contact resistance not only affects the signal transmission quality of the connector, but is also directly related to the service life and safety of the connector.
The material of the contact surface is the primary factor affecting contact resistance. The conductive properties of different materials vary significantly, so choosing the right material is critical to reducing contact resistance. Generally speaking, metal materials have good electrical conductivity, such as copper, silver and other precious metals, and their contact resistance is relatively small. However, in practical applications, factors such as material cost, processing difficulty, and corrosion resistance also need to be considered.
In order to improve the conductivity and corrosion resistance of the connector, the contact surface is usually plated with a layer of metal with good conductivity. The quality and thickness of the coating have an important influence on the contact resistance. High-quality plating ensures smoothness and uniformity of the contact surface, thereby reducing contact resistance. At the same time, the thickness of the coating also needs to be moderate. Too thick or too thin may affect the contact resistance.
Contact pressure refers to the pressure generated between the contact surfaces when the connector is mated. The size of the contact pressure directly affects the contact area and the number of contact points on the contact surface, thereby affecting the contact resistance. Generally speaking, the greater the contact pressure, the larger the contact area, the more contact points, and the smaller the contact resistance. However, excessive contact pressure may also cause deformation or damage of the contact surface, so the contact pressure needs to be reasonably controlled.
The surface state of the contact surface also has an important influence on the contact resistance. Surface contamination, oxidation, corrosion, etc. will all cause an increase in contact resistance. Therefore, during the manufacturing and use of connectors, the cleanliness and surface quality of the contact surface need to be strictly controlled. At the same time, taking appropriate protective measures, such as coating with anti-rust oil, using sealing materials, etc., can also effectively prevent contamination and corrosion of the contact surface.