The TE Connectivity 228686-1 is a Coaxicon series BNC twinaxial jack that combines a female socket and a male pin in a single connector body — an unusual hybrid contact arrangement for a BNC-sized interface. It is designed for panel-mount, through-hole, or right-angle board termination, with a bayonet lock that provides quick, vibration-resistant mating. The connector carries a 500 V rating and is specified for 200 mating cycles, with gold-plated center contacts on brass and phosphor bronze base materials. The body is zinc with nickel finish, and the dielectric uses polymethylpentene (PMP) for the insulator.
The 228686-1 is officially obsolete per TE Connectivity's lifecycle status. There is no documented direct replacement or cross-reference from the manufacturer. No last-time-buy window is available from the factory; the supply channel is surplus and broker inventory.
The shield is terminated by solder, and the center contacts are also solder-terminated. The bayonet lock ensures a secure mate with standard BNC twinaxial plugs.
Environmental and Mechanical
The 200 mating cycle rating is typical for a bayonet-lock BNC; the gold center contact plating maintains contact resistance over repeated connects. The impedance is non-constant, which means this connector is not intended for controlled-impedance RF signal paths — it is a general-purpose twinaxial interconnect.