What are the requirements of the round hole row for the environment?porcelain thimbles Processor

　　What are the requirements of the round hole row for the environment?

　　There are many factors that need to be considered when selecting a wire-to-round hole pin header. Among them, environmental parameters are one of the most important factors, including temperature, humidity, and air pressure. Under different environmental conditions, the use of wire-to-round hole pin headers is different. Here are some tips for use in extreme environments. Round hole pin header

　　1. High temperature environment

　　The metal material and insulating material of the wire-to-round hole pin header determine the working environment temperature of the connector. High temperature will damage the edge material, resulting in a decrease in insulation resistance and withstand voltage; for metals, high temperature can make the touch pair lose elasticity, accelerate oxidation and cause plating transformation. Usually, the ambient temperature is -40~80℃, and it may be higher in special occasions.

　　2. Humid environment

　　The relative humidity is greater than 80%, which is an important factor causing electrical breakdown. The humid environment causes the absorption and loosening of water vapor on the surface of the insulator, and simply reduces the insulation resistance to below MΩ. Long-term exposure to high humidity will cause physical deformation, differentiation, and escape of products, resulting in respiratory effects and electrolysis. Corrosion and cracks. In particular, it is the wire-to-round hole pin header outside the equipment. It is often necessary to consider the environmental conditions of humidity, water seepage and pollution. In this situation, a sealed connector should be selected.

　　3. Environment with drastic changes in temperature

　　The humidity drastic change test is to imitate the practical application condition of using the wire-to-round hole pin header in a cold environment to a warm environment, perhaps imitating the condition of a sudden change in the ambient temperature of a spacecraft and detector. The sudden change in temperature may cause cracks or delamination of the insulating material.

　　4. Thin air environment

　　At high altitudes where the air is thin, the plastic emits gas to pollute the touch pair, which increases the tendency of corona to occur, reduces the voltage withstand function, and causes short circuit defects in the circuit. When reaching a certain value at high altitude, the performance of plastics deteriorates. Therefore, when using non-sealed connectors at high altitudes, it is necessary to derate them.

　　5. Corrosive environment

　　According to the use of wire-to-round hole pin headers in different corrosive environments, choose connectors with corresponding metal, plastic, and coating structures, like connectors used in salt spray environments. If there is no anti-corrosive metal surface, the function will be deteriorated. . In an environment rich in SO2 with a proper concentration, it is not suitable to use silver-plated touch-pair connectors. In hot flash areas, mold is also the first question.

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