2.00 mm pitch, 3 positions, breakaway
The mating finish is 3.94 µinch (0.100 µm) gold over copper alloy; the post finish is 78.7 µinch (2.00 µm) tin — the gold side handles the mating interface, the tin side takes the solder joint.
How it compares to 1376779-2
The closest peer is 1376779-2: same 2.00 mm pitch, single-row, through-hole, gold mating finish, but that part carries 3 A per contact vs 2 A here, and its gold plating is thicker (8.00 µinch vs 3.94 µinch). If your design needs the extra amp or higher cycle life from thicker gold, 1376779-2 is the swap — same footprint, same series, same active status.