The 499141-1: That saves z-height in a tight enclosure but does eat board-edge real estate for the connector body and eject hooks. The mating half is a 10-position AMP-Latch receptacle (like 1-499140-0 or similar) with latch-lock ears that engage the long eject hooks on this header.
Current, Plating, and Contact Life
That current is modest — this is a signal connector, not a power interconnect. The post finish is tin-lead (100 µinch), which solders fine to standard through-hole pads. The contact material is brass — adequate for signal currents, though you'd step up to phosphor bronze for higher-cycle flex applications.
Mounting and Mechanical Notes
Through-hole, right-angle mounting. The insulation height of 0.315" (8.00mm) plus the mated receptacle height sets the total stack above the board — check your enclosure lid clearance. Keying slot and mounting flange are present. The keying slot prevents mismating with a differently keyed receptacle — useful when multiple AMP-Latch connectors share a panel. The mounting flange gives a screw-down option for extra retention in high-vibration environments, though the latch locks alone handle most shock and vibration for signal-level cabling.