Three dimensions of automotive connector performance

The performance of automotive connectors is reflected in three major dimensions, namely, mechanical performance, electrical performance and environmental performance. Mechanical properties, mainly including insertion and extraction force, mechanical life, vibration resistance, mechanical shock resistance. Insertion and extraction force is divided into insertion force and pull-out force, generally specify the insertion force of the great value and pull-out force of the very small value; mechanical life, also known as the insertion and pull-out life, is a durability index, to an insertion and a pull-out for a cycle, automotive connector insertion and pull-out force and mechanical life is usually associated with the quality of the contact parts of the plating and the arrangement of the dimensional accuracy; In addition, due to the vehicle in the process of driving in the dynamic environment over a long period of time, vibration and mechanical shock can effectively reduce the contact parts of the friction brought about by the Mechanical shock can effectively reduce the surface wear caused by friction in the contact area, improve product reliability, and then improve the safety of the vehicle system.

Electrical performance, mainly including contact resistance, insulation resistance, withstand voltage, anti-electromagnetic interference (EMC), signal attenuation, current-carrying capacity, crosstalk and other requirements. Contact resistance refers to the automotive connector connected to the male and female terminals between the contact surface of the additional resistance, will directly affect the signal transmission and electrical transmission of electrical equipment in the car, if the contact resistance is too large, resulting in high temperature rise, affecting the service life of the connector and reliability; insulation resistance refers to the insulating part of the automotive connector to apply a voltage, thus making the insulating part of the surface or the inside of the leakage current and the presentation of the Resistance value, if the insulation resistance is too low, may form a feedback circuit, increase power loss, causing interference, excessive leakage current may damage the insulation, endangering safety; anti-electromagnetic interference, that is, electromagnetic compatibility, refers to other equipment does not produce electromagnetic interference, even if electromagnetic interference from other equipment still maintains the original performance, which is particularly important in the automotive electronic system. Environmental performance, automotive connectors are required to have temperature resistance, moisture resistance, salt spray resistance, corrosive gas resistance and other properties. Temperature resistance to the working temperature of the automotive connector requirements, as the automotive connector work, the current in the contact point at the heat generated, resulting in a temperature rise, if the temperature rise is too high than the normal operating temperature, which can easily lead to short circuits, fires and other serious accidents; humidity, salt spray, corrosive gases can be avoided to avoid automotive connectors metal structural components, contact parts oxidation, corrosion, affecting the contact resistance.

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