The criteria is;(1) Signal contact
The fillet is formed and gets wet sufficiently.
(2) Power contact and reinforcement metal The through hole is filled with solder firmly.
DF40C-**DS-0.4V(51) is our standard.
DF40JC-**DS-0.4V(53) is connector for inspection purpose only and mating cycle is 3,000 times.
Top of the contact touches the contact of m...
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