221629-4 is a 50 Ohm BNC terminator plug designed for RF coaxial applications. This terminator features a 1 Watt, 50 Ohm resistor specification with nickel body plating and gold center contact plating. The connector utilizes a polyethylene dielectric and has a maximum diameter of 14.53 mm (0.572 in) with a length of 33.02 mm (1.300 in). This terminator plug version comes without a tether and is commonly used for signal termination in RF test equipment, communication systems, and network applications where proper impedance matching is required.