Major Factors Affecting the Reliability of Automotive Connectors

An automotive connector consists of four core components: contact terminals, housing, insulators and auxiliary fittings. These parts enable automotive connectors to serve as circuit interconnect bridges and operate reliably throughout service life. Automotive connectors need to comply with the USCAR‑20 standard, which mandates stable, dependable contact performance across the product’s full lifecycle. Key influencing factors are listed below:

1. Reliable, consistent material properties of contact terminals

2. Stable contact normal force

3. Stable circuit voltage and current

4. Temperature maintained within specified thresholds, encompassing ambient operating temperature and self‑generated temperature rise

5. Robust vibration resistance

6. Equivalent reliability specifications applied to high‑speed long‑distance data communication connectors: automotive connectors must sustain dependable performance under harsh operating environments

7. Maximum connector insertion force: ≤ 20.5 kg

8. Minimum connector retention force: ≥ 2.5 kg

9. Operating temperature rating: -40℃ to 120℃