B51-053-0000220 is a right-angle printed circuit board (PCB) jack connector designed for 50 ohm RF applications. This SMB-series connector features stepped legs that are raised from the PCB surface to prevent accumulation of soldering fluids and foreign bodies, with a single-piece conductor design that eliminates internal joint separation during wave/flow soldering operations. The connector has 1.00 mm square mounting legs positioned at 4 locations with a 6.41 mm spacing, and mounting hole diameter of 1.00 mm. It operates across a frequency range of 0 to 4.0 GHz with an impedance of 50 ohms, voltage rating of 300 Vrms at sea level, and temperature range of -65°C to +165°C. The connector is suitable for commercial and military RF equipment requiring reliable high-frequency signal transmission with minimal insertion loss and excellent VSWR performance.