The TE Connectivity 2-179958-2 is a 2-position receptacle housing from the Dynamic D-5200 series, designed for wire-to-board or wire-to-wire power interconnects where the 10.16 mm pitch gives generous creepage for higher-voltage circuits.
Pitch and Position — the Footprint Match
At 10.16 mm (0.400") pitch, this housing is the widest-spaced member in the Dynamic D-5200 family — compare it to the 5.08 mm pitch of the 1-2069882-6 (6-position, 2-row) or the 9.50 mm pitch of the sealed 1-1703532-1 (2-position plug). The 2-position count is the minimum for the series, so the housing occupies a narrow footprint on the board or in the harness, but the wide pitch means the mating header's solder tails will need a correspondingly wide pad layout — not a dense-pitch design.
Polarizing Key — One-Way Mate
The polarizing key forces correct orientation during assembly.