Board-to-Board Stacking Fit — Pitch and Position Count
The 20021321-00050T4LF: This is a 50-position, dual-row receptacle on 0.050" (1.27mm) pitch — the same pitch as the mating Minitek127 pin header, so the board footprint lines up pin-for-pin without guesswork.
Gold Plating and Contact Reliability in the Field
The mating contact finish is 10.0µin gold over phosphor bronze — that's enough gold to resist fretting corrosion in moderate-cycle applications like test equipment or telecom line cards where the connector sees dozens of mates over its life.
Surface-Mount Termination and Board Assembly
Termination is solder-only (SMT), so the receptacle sits flat on the board and reflows in a standard profile — no press-fit tooling, no wave-solder clearance needed on the bottom side.