What is the connector temperature rise standard? What are the main effects of temperature on connectors?

Connector is an important part of electronic equipment, its main role is to connect different electronic devices or circuit boards for signal transmission and power transmission. The connector consists of metal conductors, insulating materials and sockets, and its temperature has an important impact on the performance and life of the connector. This article will introduce the connector temperature rise standards and the impact of temperature on the connector.
Connector temperature rise standard
Connector temperature rise standard is a certain current, ambient temperature and working time, the temperature rise of the connector should not exceed the specified temperature. This standard is usually specified by industry standards or manufacturers. For example, the temperature rise standard for general-purpose connectors is defined in accordance with UL 498 standard, which specifies that the temperature rise of the connector at 20A current should not exceed 30 ℃. For industrial connectors, the temperature rise standard is usually set by the manufacturer according to the conditions of use.
Connector temperature on the performance of the impact
Connector temperature is too high on the connector will have a multifaceted impact, the following are some of the main aspects:
1. Conductivity
The conductivity of the connector depends on its material and geometry. When the connector temperature is too high, the resistance of its conductor material will subsequently increase, resulting in a reduction in the conductivity. This may lead to reduced efficiency of current transmission, increased noise, or even cause damage to the connector.
2. Mechanical strength
The mechanical strength of the connector is its stability and reliability when subjected to external forces. When the connector temperature is too high, the mechanical properties of its materials will decline, resulting in its ability to withstand external forces is reduced. This may lead to connector loosening, poor contact, or even damage.
3. Oxidation
Connector temperature is too high may also lead to oxidation of the connector material, thereby accelerating the connector aging and failure. Oxidation will lead to corrosion of the connector surface, thereby reducing the conductivity and reliability of the connector.
4. Thermal expansion
High connector temperature may also lead to thermal expansion of its materials. The geometry of the connector may change as a result, resulting in reduced contact force or even loosening of the connector. This may lead to increased resistance of the connector, reduced efficiency of current transfer, increased noise, or even damage.

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