Board-to-wire power header, 4-circuit
The 0039289048 is the 4-circuit member of Molex's Mini-Fit Jr 5566 shrouded header line, a board-to-wire power interconnect with a 4.20 mm pitch. Gold mating contacts rated for repeated cycles, through-hole mounting, a full 4-wall shroud with locking ramp, and a board lock for SMT retention during wave solder.
Position count and the Mini-Fit Jr 5566 ladder
Within the Mini-Fit Jr 5566 series, the 0039289048's 4 circuits sit at the low end of the position range; the same 4.20 mm pitch, dual-row footprint, and shrouded locking-ramp design carry across all members, so the position count is the sole selection variable for circuit matching.