The 5-534206-3: The 8.13 mm insulation height leaves clearance for trace routing under the body on a typical 1.6 mm PCB. Through-hole solder tails 2.92 mm long (0.115") suit boards up to 1.6 mm thick; the tin-plated post (150 µinch) wets well in wave or hand solder.
Current Capacity and Contact Interface
The post side is tin, which is the standard for solder-joint reliability.
The female socket contacts accept square pins from the mating header; the connection is held by the contact normal force, not a locking mechanism. Listed for board-to-board or cable applications — it can sit on a PCB receiving a header from another board, or terminate a discrete-wire cable assembly via the matching crimp contacts (sold separately).
No official second-source cross-reference exists, but the 1376775-2 (5-position, 8 µinch gold) and 1376775-3 (3-position, 8 µinch gold) are same-series siblings with different position counts and thinner gold.