Heavy-duty Connector Selection Logic And Cost Optimization Strategy

Material type Temperature range Typical cases Key failure modes

PBT -40~120℃ Home appliance control board Cracking in hot and humid environment

PA6T -55~160℃ Automotive ECUheavy duty connector thermal aging deformation

LCP -50~240℃ 5G base station RF module High-frequency dielectric loss

Cost optimization strategy for pin and mother headers:

Critical path classification: beryllium copper gold plating for signal contacts, brass tin plating for power contacts (cost reduction of 30%~50%)

Plating differentiation:

High-frequency signal area: gold plating 0.8μm (impedance stability ±2%)

Ordinary connection area: tin plating 5μm (welding yield increased by 15%)

This specification integrates MIL-STD-1344 and IPC-7351 standards, and proposes a plating gradient optimization solution specifically for high-voltage scenarios of new energy vehicles. It is recommended to cooperate with salt spray test (96 hours) and mechanical vibration test (20G acceleration) for reliability verification.