The Hirose X.FL-R-SMT-1(80) is a surface-mount receptacle from the X.FL series, a U.FL (UMCC) form-factor coaxial connector. It carries a male pin centre contact and uses a snap-on fastening — no threads, just a push-and-click mate.
20 Mating Cycles — Plan for One-Time or Low-Cycle Duty
Rated for 20 mating cycles, this receptacle is not built for repeated field disconnect. The gold-on-gold contact interface (gold centre contact plating on both halves) keeps contact resistance stable across those cycles, but the snap-on retention spring will fatigue well before a threaded RF connector would. For a production BOM that needs frequent cable swaps, look at the U.FL-R-SMT-1(40) sibling with 30 cycles — still low, but a 50% margin over this part.
50 Ohm Impedance, 6 GHz Ceiling — The RF Path
The 6 GHz max frequency covers 5 GHz WiFi and most sub-6 GHz 5G bands, but not mmWave. The SMT footprint and the snap-on interface keep the signal launch short, which helps maintain the impedance through the transition from PCB trace to coaxial cable. For a 6 GHz link, the PCB layout must match the pad pattern and ground clearance specified in the Hirose product drawing; the connector itself is rated for the band, but the launch geometry decides whether you actually see 6 GHz or hit a resonance earlier.
Mating Half and Cable Compatibility
This receptacle mates with the X.FL-PR-SMT1-2(80) plug, which carries a female socket centre contact. Both are U.FL (UMCC) interface — the same physical form factor as Hirose's U.FL series, so standard U.FL cable assemblies with a male pin receptacle will mate with this part. The snap-on retention is the same across the X.FL and U.FL lines; the difference is in the plating and cycle-life spec. If you already have U.FL cable assemblies on the shelf, this X.FL receptacle is a drop-in fit for the board side.