75 Ohm BNC Jack for 4 GHz Signal Paths
The 75 Ohm impedance is the defining parameter here — this is the BNC variant for video, broadcast, and data-com signal chains where 75 Ohm is the standard, not the 50 Ohm version common in RF test equipment.
The 4 GHz max frequency sets the usable bandwidth. The 300 V voltage rating is typical for 75 Ohm BNCs in these signal paths.
