75 Ohm BNC jack built for 12 GHz video and data
The BNC7T-J-P-HN-ST-TH2D: This is a female socket (jack) with a bayonet lock, single port, rated to 12 GHz — enough headroom for 4K and 12G-SDI without rolling off the signal. Gold-plated center contact on a copper alloy base, PTFE dielectric, and a nickel-plated brass body.
What the 12 GHz and 75 Ohm ratings mean on the bench
The 12 GHz max frequency is the practical bandwidth limit — above that, the connector's geometry starts introducing reflections. For 12G-SDI (12 Gbps), this jack sits right at the ceiling; for 3G-SDI and HD-SDI (3 Gbps and 1.5 Gbps), there's plenty of margin. The 75 Ohm impedance is non-negotiable: pair this with a 50 Ohm cable or a 50 Ohm BNC and you'll see a return loss bump at the junction. Stick with 75 Ohm coax — RG-6, RG-59, or precision video cable — and the impedance stays flat through the mated pair. The 500 V rating covers most broadcast gear with phantom power or distribution amp rails; the PTFE dielectric handles the voltage without breaking down.
Bayonet lock — a quarter-turn engages the mating plug, no threads to cross. Mates with any standard 75 Ohm BNC plug (male) that uses the same bayonet interface.