The 52601-S10-4LF: The mating finish is gold or GXT™ at 15.0 µinch thickness, while the solder tails are tin-plated 100.0 µinch. A keying slot in the shroud prevents incorrect orientation with the matching receptacle — a practical safeguard when multiple similar headers sit side by side on the same board.
Peer Comparison: 10 vs 16 Positions
For a BOM that needs more I/O on the same footprint pattern, the 16-position version is a direct swap in pitch and row layout. The 52601-S10-8LF shares the same 10-position count and plating but uses surface-mount termination instead of through-hole. If the board assembly process is SMT-only, the -8LF variant eliminates the wave-solder step.
