The 919-107J-51SX is an MCX straight jack connector designed for 50 O coaxial cable applications with broadband performance from DC to 6 GHz. This connector features a snap-on coupling mechanism per CECC 22220 with gold-plated brass body and beryllium copper female contact, providing excellent electrical performance and durability. Key electrical characteristics include a maximum VSWR of 1.06 at DC–2.5 GHz, insertion loss of 0.10 dB at 1 GHz, and RF leakage of 60 dB minimum at 1 GHz for flexible cables. The connector is rated for a voltage of =335 Vrms and operates reliably across a temperature range of -55°C to +155°C, with mechanical durability of 500 mating cycles minimum. The 919-107J-51SX is widely used in automotive, wireless LAN, broadband, and wireless infrastructure applications where compact size, low reflection, and reliable quick-connect performance are essential.