Fully insulated quick-disconnect for 18-22 AWG
The 2-520979-2 is a red, fully insulated female quick-disconnect terminal from TE's Ultra-Fast Plus series, accepting 18-22 AWG wire with an insulation diameter range of 0.060" to 0.120" (1.52mm to 3.05mm). It mates to 0.110" (2.79mm) or 0.125" (3.18mm) tab widths with a 0.032" (0.81mm) tab thickness, and the tin-plated brass contact suits moderate-cycle applications where corrosion resistance is not the primary concern.
Tab width and wire range versus Utilux and PIDG peers
The 2-520979-2's 0.110" (2.79mm) tab width and 18-22 AWG wire range differ from the wider 0.248" (6.30mm) tab of the Utilux 1-1659250-0 (17-20 AWG) and the 0.250" (6.35mm) tab of the Utilux 1-1627194-4 (15-18 AWG) — the narrower tab and smaller wire gauge target signal-level circuits rather than power distribution. The PIDG 1377175-8 (0.312" tab, 14-16 AWG) is a heavier-duty terminal with non-mating end insulation; the 2-520979-2's fully insulated barrel provides complete coverage along the wire entry.