What this connector is
The 20021121-10064T1LF is the 64-circuit member of the Minitek127® 1.27mm series — a dual-row, unshrouded male pin header sized for tight-density board-to-board mezzanine or stacking interconnects in industrial automation and instrumentation applications. It is a push-pull push-pull fastening header with a board guide feature that helps align the mating receptacle during assembly and reduces pin-shear stress on the mated pair. Contact plating splits across the mating interface: flash gold on the male pin face, and 50.0 µin (1.27 µm) tin on the solder-post side. The flash gold handles repeated mating cycles at the interface; the thick tin post survives the reflow soldering thermal budget without degrading solderability. Rated 1A per contact at 125VAC with an operating envelope from -55°C to 125°C, this is a signal-density interconnect — the current and voltage ratings are well clear of power territory, and the 64 positions at 1.27mm pitch prioritise routing density over current-carrying capacity.
Mating interface
The push-pull push-pull fastening type on this header is designed for tool-free insertion and extraction — the mating half seats with a firm push and releases with a pull, so the assembly sequence needs to account for this blind-mate scenario in equipment where the board stack is assembled without full visual access. All 64 positions are fully loaded; the insulation is black thermoplastic rated UL94 V-0, and the board guide feature on the header body assists with alignment during the mating process.
Sourcing and lifecycle
The Minitek127® series is a long-run industrial product family with multiple position counts and termination options across the same 1.27mm pitch footprint — if you need a second source or a compatible variant (right-angle, through-hole, or different plating), the series footprint gives you a range of drop-in alternatives, but no specific cross-reference is recorded for the 20021121-10064T1LF itself.