75 Ohm BNC Jack — the impedance that changes the application
The 731713230: Most BNCs are 50 Ohm; this one is built for 75 Ohm systems, which means it is the right choice for video distribution, CCTV, broadcast, and telecom baseband where the characteristic impedance of the cable and the connector must match. The 75 Ohm impedance is not a tolerance band — it is the design target, and mating it with a 50 Ohm cable or connector will introduce a reflection at the junction. Rated to 3 GHz maximum frequency and 500 V, this jack covers the bandwidth of standard-definition and high-definition analog video. Through hole mounting with solder contact and shield termination — the centre pin and the outer shield both solder into the PCB. Single-port design; the shell is not isolated from ground.