Fig. 4: Contact resistance characteristics of passivated silver plated spring pins on PCB with chemical nickel gold plating during temperature cycling.

 
  • 温度循环试验后,光学观察显示PCB的化学镍金层整体有平滑的烙印,但化学镀金层完好无损。弹簧引线镀银层同样也没有受磨损。
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