RF Interconnect for Tight Signal Paths
The C.FL-R-SMT-1(90): It sits in the C.FL series — Hirose's compact coaxial line — and is specified for 50 Ohm impedance with a frequency ceiling of 30 GHz. The gold-plated phosphor bronze body and brass centre contact with gold plating handle the signal path, while the liquid crystal polymer (LCP) dielectric keeps losses predictable through the 30 GHz band.
What the 30 GHz and 20-Cycle Ratings Mean
The 30 GHz maximum frequency is the headline spec here — it puts this C.FL receptacle well above the 6 GHz ceiling of the sibling X.FL series. That frequency rating means the connector maintains a controlled 50 Ohm impedance through the snap-on interface up to mmWave bands, suitable for 5G NR FR2, microwave backhaul, or high-speed digital test points. The 20 mating cycles are a hard limit: this is a limited-mate connector. Each snap-on engagement wears the gold-on-gold contact interface, and after 20 cycles the contact resistance rises beyond the design window. Plan this as a semi-permanent board-to-cable interconnect, not a frequent disconnect point. The shield termination is solder — the outer ground path is established through the solder pad, not a crimp ferrule, so the board footprint must include a solid ground plane return.