TE Connectivity 414305-1 BNC Jack — 50 Ohm, 4 GHz, Bayonet Lock
It is rated to 4 GHz maximum frequency and carries a 500 V voltage rating. The center contact is phosphor bronze with silver plating, and the body is zinc with a tin-lead finish.
RF Performance and Mechanical Endurance
Rated at 50 Ohms nominal impedance and 4 GHz maximum frequency, this jack suits standard coaxial signal paths in lab instruments, spectrum analyzers, and low-power RF distribution. The 500 mating cycles rating means the connector can be reconnected daily for over a year before contact wear becomes a concern — a solid figure for bench or field-service use. The silver-plated center contact provides low contact resistance, though silver tarnishes over time; in high-humidity or corrosive environments, gold-plated alternatives may be preferred.