What this connector is
The Molex 430451023 is the 10-circuit member of the Micro-Fit 3.0 43045 series — a dual-row, right-angle through-hole header with a 0.118" (3.00mm) pitch and a 4-wall shroud. The male pin array mates with the matching Micro-Fit 3.0 receptacle housing and its locking ramp holds the pair secured under vibration. Board-lock lugs on the housing body anchor the header to the PCB during wave or hand-solder assembly, reducing pivot stress on the solder joints.
Plating and current rating
The contact finish splits the duty: 30.0 µin (0.76 µm) gold on the mating interface carries the cycle life and contact reliability; 100.0 µin (2.54 µm) tin on the solder post protects the through-hole joint from oxidation and solder wetting. Rated 8 A per circuit at the header's operating temperature — the current ceiling is governed by the contact material (brass,) and the LCP housing's thermal limits, not by the plating grades themselves.
Where it is used
Micro-Fit 3.0 headers in this configuration sit inside sealed and unsealed equipment as board-to-wire power and signal distribution points. The 600 V voltage rating and glass-filled LCP body rated UL94 V-0 cover automotive harness inside the cabin, industrial automation control modules, medical diagnostic equipment, and telecom infrastructure panels. The 4-wall shroud keeps the pin array protected during handling and shipping before the mating half is assembled.