131-3701-276 is a vertical PC mount SMB jack assembly connector designed for RF and microwave applications. The connector features a brass body with nickel plating (0.0001 inch minimum over copper) and teflon insulation, with cold-plated brass contacts. It is rated for 50 ohm impedance across a frequency range of 0 to 4 GHz, with a maximum working voltage of 335 VRMS at sea level and dielectric withstanding voltage of 1000 VRMS minimum. The connector exhibits excellent mechanical durability with an engagement force of 14 lbs maximum, contact retention of 4 lbs minimum axial force, and a minimum durability rating of 500 mating cycles. It operates reliably across a wide temperature range of -65°C to +165°C and meets MIL-C-39012 environmental standards including thermal shock, corrosion, shock, and vibration testing, making it suitable for demanding aerospace, military, and industrial RF applications.