Silver-plated terminals silver-plated generally have good point contact performance, can be used continuously at 150 ℃, the cost is more expensive, easy to rust in the air in the presence of sulfur and chlorine, harder than tin plating, and its resistivity is slightly higher than or Equivalent to tin, the potential electromigration phenomenon can easily lead to potential risks in connectors. Gold-plated terminals Gold-plated terminals have good contact performance and environmental stability, and the continuous temperature can exceed 125 ℃, and has excellent friction resistance. Hard gold is harder than tin and silver, and has excellent friction resistance, but its cost is higher, and not every terminal needs gold plating. When the contact force is low and the tin plating layer is worn, gold plating can be used instead. terminal.