The 919-NM119J-51A is an MCX 50O printed circuit board angle jack connector designed for broadband RF applications. This connector features a snap-on coupling mechanism per CECC 22220 and operates across a frequency range of DC to 6 GHz with an impedance of 50O. The connector exhibits excellent electrical performance with a maximum VSWR of 1.06 at DC–2.5 GHz (straight) and 1.1 at DC–2.5 GHz (right-angle), an insertion loss of 0.10 dB maximum at 1 GHz, and RF leakage of 60 dB minimum at 1 GHz for flexible cable and 70 dB minimum for semi-rigid cable. The connector is constructed with gold-plated brass male contacts and beryllium copper female contacts, PTFE insulators, and operates reliably over a temperature range of -55°C to +155°C. It is commonly used in wireless infrastructure, base stations, GPS systems, and broadband applications where compact size, low reflection, and reliable quick-connect performance are essential.