For a signal header at this pitch, 3 A is typical — you're not running motor current through it, but it handles logic-level power and I/O comfortably.
Termination is solder to through-hole — the post length is 0.095" (2.41mm), which fits standard 1.6mm PCBs with enough tail for a good fillet. Overall contact length is 0.425" (10.80mm), so the mating pin stands 0.230" (5.84mm) above the insulator. Black thermoplastic body, no shrouding, so the mating receptacle needs to be keyed or aligned by the board layout.
Comparing 26-Position vs 24-Position Sibling
The 77313-101-24LF is the 24-position version of this same dual-row, 0.100" pitch breakaway header. Everything else — plating, current rating, insulation height, post length — is identical. If your BOM calls for 24 positions, the 26-position part can be depopulated by snapping off the extra pair, but the 24-position sibling saves that step.