Electrical Performance Of Automotive Connectors

The main electrical properties of automotive connectors include contact resistance, insulation resistance and electrical strength.

① Electric vehicle connectors with high contact resistance should have low and stable contact resistance. The contact resistance of automobile connectors ranges from a few milliohms to tens of milliohms.

② Insulation resistance is an index to measure the insulation performance between contacts of electric vehicle connectors and between contacts and housing, and its order of magnitude ranges from hundreds of megaohms to hundreds of gigaohms.

③ Electrical strength, or voltage resistance and dielectric withstand voltage, is the ability to withstand the rated test voltage between the contacts of automotive connectors or between the contacts and the housing.

④ Other electrical properties.

Electromagnetic interference leakage attenuation is to evaluate the electromagnetic interference shielding effect of automotive connectors. Electromagnetic interference leakage attenuation is to evaluate the electromagnetic interference shielding effect of automotive connectors, which is generally tested in the frequency range of 100mhz~10ghz.

For RF coaxial automotive connectors, there are also electrical indicators such as characteristic impedance, insertion loss, reflection coefficient, voltage standing wave ratio, etc. Due to the development of digital technology, in order to connect and transmit high-speed digital pulse signals, a new type of automobile connector, namely high-speed signal automobile connector, has appeared. Accordingly, in terms of electrical performance, in addition to characteristic impedance, some new electrical indicators have also appeared, such as crosstalk hysteresis.