Industry knowledge

What are the main functions of automotive connectors and what are the tests?

2021-07-06

The main function of the automobile connector is to realize the connection when the circuit is different or the circuit is isolated. This is an indispensable requirement for a mobile car. Therefore, the verification of its data transmission performance, electrical performance, and environmental reliability is particularly important. Test standard reference: EIA-364 series, USCAR-2, Q/JLY J7111175A-2018 (audio and video), QC/T1067-2017 (national standard) standards, etc.

Covered products: power connectors, signal connectors, wireless Bluetooth, wireless transmitter products, etc. Connector test items: environmental climatic test: high temperature aging, low temperature storage, high and low temperature shock, damp heat cycle, constant damp heat, rapid temperature and humidity changes, salt spray, high acceleration stress, condensation, low air pressure, chemical resistance, etc. Mechanical performance test: three comprehensive tests of vibration, temperature and humidity vibration, free drop, mechanical shock, insertion force, size, terminal hole strength, terminal pull-off force, etc.

IP protection test: IP full-grade dustproof, IP full-grade waterproof test. Tightness test: tightness, leakage inspection, immersion, immersion pressure difference, line movement and pressure difference during immersion, etc. Slicing analysis test: terminal anti-recession, thickness measurement, component analysis, terminal cross-section observation, etc. Data transmission test: characteristic impedance, insertion loss, loop loss, shielding performance, differential impedance, far-end crosstalk, near-end crosstalk, eye diagram, intra-group time lag, inter-group time lag, etc.

Electrical tests: contact resistance, voltage drop, insulation resistance, current circulation, current characteristics, withstand voltage test, continuity, temperature rise, derating test, etc.