The 919-382J-51P is an MCX PCB board receptacle jack connector designed for high-frequency RF applications. It features a 50 ohm impedance characteristic and operates across a frequency range from DC to 6 GHz, making it suitable for broadband signal transmission. The connector is constructed with a brass body with gold plating (0.000003" minimum thickness) and beryllium copper contacts with gold plating (0.000005" minimum thickness), while the insulator is made of PTFE. It is rated for a dielectric withstanding voltage of 1000 Vrms minimum and has a mechanical durability of 500 mating cycles. The operating temperature range is -65°C to +165°C, and it features 0.068" PCB mounting legs per CECC 22000 interface specifications. This connector is commonly used in RF/microwave systems, telecommunications equipment, and test instrumentation where reliable high-frequency signal integrity is required.