What this connector is
The Molex 66429-067 is the 20-circuit member of the Quickie™ series — a dual-row 0.100-inch (2.54 mm) pitch shrouded header in a right-angle through-hole footprint. Contact material is phosphor bronze alloy, finished with 30.0 µin (0.76 µm) gold or Gold GXT™ on the mating interface. The housing is glass-filled PBT rated UL94 V-0, blue, with a 0.681-inch (17.30 mm) mated height. Four-wall shrouding, a keying slot, mounting flange, and latch-lock/eject hooks all combine to lock the mating half positively and prevent mis-insertion in cable-to-board harness work.
Where it goes
Board-to-cable/wire style, through-hole right-angle mounting sits flush on the PCB edge for cable harness exit. The latch-lock/eject hooks and keying slot are standard in automation and industrial equipment wiring — the shroud keeps the connector seated under shock and vibration without a secondary lock bracket. UL94 V-0 gives the thumbs-up for equipment that needs flame-retardant housing material.
What the ratings mean
The 30.0 µin (0.76 µm) gold mating finish is the key differentiator against tin-plated peers — it governs mating cycle life and contact resistance at first mate, not the headline current. The 0.100-inch pitch and 20 positions land this squarely in the standard Quickie™ footprint; the base product number 66429 anchors the series. Four-wall shrouding and the latch-lock/eject hooks are the mechanical lock — confirm your cable-side receptacle carries the matching polarising key and latch geometry before committing the BOM line.