What the TE 5228686-1 Is — and Isn't
The TE Connectivity 5228686-1 is a Coaxicon-series BNC-style twinaxial jack that combines a female socket and a male pin in a single connector body — an unusual hybrid contact arrangement for twinax signal pairs. It mounts through a panel bulkhead with a front-side nut and terminates to the PCB via right-angle through-hole solder tails, so the board edge sits parallel to the panel face. The bayonet lock secures the mating plug with a quarter-turn, and the centre contacts are gold-plated for corrosion resistance over 200 mating cycles. The dielectric is polymethylpentene (PMP), and the zinc body gets a nickel finish.
Where the Non-Constant Impedance Matters
This connector carries a Non-Constant impedance rating — it is not a controlled-impedance BNC. It was designed for twinaxial data or control signals where the line impedance is not tightly specified.
The bayonet lock mates with a standard BNC twinaxial plug. The shield is terminated via solder to the body, and the centre contacts are solder-terminated to the PCB — no crimp tooling required for the board-end connection. The board guide and isolated features help align the connector during PCB insertion and prevent accidental shorts to the panel.