What is the knowledge about high current connectors?

High current connectors are also known as connectors and sockets in China, which generally refers to electrical connectors. That is, a device that connects two active devices, carrying current or signal. The use can be very good to improve the production process, the connector simplifies the assembly process of electronic products. It also simplifies the mass production process; and easy to maintain. If an electronic component fails, the faulty component can be quickly replaced when the connector is installed; it is easy to upgrade. With the advancement of technology, it is possible to update the components when installing high current connectors, and new components can be used. Its basic performance can be divided into three categories: mechanical performance, electrical performance and environmental performance.

-I. What is the knowledge about high current connectors? High-current connectors operating temperature of 200 ° C (except for a few high-temperature special connectors), the low temperature of -65 ° C. As the connector works when the current will produce heat in the contact point, resulting in temperature rise, here also need to know, the operating temperature is generally considered to be equal to the ambient temperature and the sum of the temperature rise of the contact. In some specifications, the permissible high temperature rise of high current connectors at rated operating current is specified. It is also resistant to the intrusion of moisture and humidity, which can affect the insulating properties of the connection and corrode metal parts. Constant humidity and heat test conditions for the relative humidity of 90% ~ 95% (according to product specifications up to 98%), the temperature of 40 ± 20 ℃, and its test time according to the product specification for at least 96 hours. Alternating humidity and heat test is more stringent. When working in an environment containing moisture and salt, the surface treatment layer of its metal structural parts and contact parts may produce galvanic coupling corrosion, which would otherwise affect the physical and electrical properties of the connector. In order to assess the ability to withstand such an environment, a salt spray test is prescribed. Thus, it means that a high-current connector is hung in a temperature-controlled test chamber and sprayed with compressed air with a specified concentration of sodium chloride solution to form a salt spray atmosphere. The exposure time is specified by the product specification and is at least 48 hours.

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