919-385J-51S is an MCX series end launch jack connector designed for PCB edge mounting applications. It features a 50 ohm impedance with a frequency range from DC to 6 GHz and a dielectric withstanding voltage of 1000 VRMS minimum. The connector body is constructed from brass with gold plating (0.000003" min. thick), while the center contact is made from BeCu with gold plating (0.000005" min. thick) and uses a natural PTFE insulator. It is designed for 1.57 mm (0.062") board thickness and offers a durability rating of 500 mating cycles minimum with an operating temperature range of -65°C to +165°C. This connector is ideal for RF applications requiring reliable high-frequency signal transmission in telecommunications, wireless systems, and test equipment.