BNC Jack, 75 Ohm — Right-Angle PCB Tail with Bulkhead Mount
That 75 Ohm impedance tells you this is a video/data BNC, not the 50 Ohm type common in RF test equipment — it belongs on CCTV, broadcast video, or digital video interface (SDI) signal paths where the 75 Ohm characteristic impedance matches the cable and transmission line standard. The mounting is a hybrid: a bulkhead flange with a front-side nut secures the connector to the panel, while the centre contact terminates through a right-angle solder tail to the PCB. This means the connector body takes the cable strain and panel shear, not the PCB solder joints — a detail that matters in equipment where the BNC gets frequent mating cycles.
Zinc body with nickel finish, dielectric is polymethylpentene (PMP). The board guide and isolated features (per the listing) aid alignment during PCB insertion and prevent the shell from shorting to nearby traces or the chassis.