The 142-0701-321 is a right-angle PC-mount SMA jack assembly designed for high-frequency RF and microwave applications. It features a gold-plated brass body with a gold-plated beryllium copper center contact and PTFE insulators, delivering 50-ohm impedance across a frequency range of 0.5–18 GHz. The connector supports a working voltage of 335 VRMS maximum at sea level and a dielectric withstanding voltage of 1000 VRMS minimum, with excellent insulation resistance of 5000 megohm minimum and low contact resistance (3.0 milliohm initial, 4.0 milliohm after environmental testing for the center contact). This connector is ideal for precision RF systems, test equipment, and high-frequency communication applications where reliable impedance matching and low signal loss are critical.