Tin-plated contacts — signal duty, moderate cycle life
The 75915-409LF: Tin-plated contacts are suited for applications with fewer than 100 mating cycles in a clean, dry environment — the tin surface can oxidise in corrosive atmospheres, increasing contact resistance over time. For repeated field-service reconnects, a gold-plated sibling in the Dubox family would be the better fit.
Mates with Dubox 0.100" pin headers
The square-pin header (0.025" square typical) inserts into the female socket contact. Confirm the header's mating pin length clears the 0.335" (8.51 mm) insulation height of this receptacle.