The 131-3701-301 is a 50 Ohm SMB right-angle PC mount jack receptacle connector designed for RF and microwave applications. It features gold plating on all contact surfaces and mounting hardware, with a frequency range of 0–4 GHz and impedance of 50 ohms, ensuring excellent signal integrity across a wide bandwidth. The connector utilizes beryllium copper female contacts and brass male contacts per QQ specifications, with PTFE fluorocarbon insulators, and is rated for working voltages up to 335 Vrms (for RG-316/RG-58 cables) and dielectric withstanding voltage of 1000 Vrms. It operates reliably over a temperature range of -65°C to +165°C and meets MIL-C-39012 Series SMB engagement specifications with a durability rating of 500 mating cycles minimum. This connector is ideal for telecommunications, test equipment, and RF instrumentation where reliable, low-loss connections and compact right-angle mounting are required.