SMC Jack (Female) to BNC Jack (Female) Adapter, DC-4GHz VSWR1.35

SMC Jack (Female) to BNC Jack (Female) | Straight Design | Screw-Lock & Bayonet-Lock | Brass Body

The ROSNOL AD-MC2B25A/91-94 is a precision RF adapter designed for broadband applications from DC to 4 GHz with 50 ohm impedance. It achieves a VSWR of ≤1.35 and insertion loss of ≤0.05 × √F GHz, ensuring minimal signal degradation. Electrical specifications include insulation resistance ≥1 GΩ, center contact resistance ≤5 mΩ on the SMC side and ≤1.5 mΩ on the BNC side, and outer contact resistance ≤2.5 mΩ and ≤1 mΩ respectively. Screw-lock coupling on the SMC side and bayonet-lock on the BNC side provide secure engagement, with mechanical durability rated at ≥500 mating cycles.

Premium materials and plating deliver superior conductivity and corrosion resistance. The BNC side uses beryllium copper center contacts with 3 microinch gold plating over 80 microinch non-magnetic nickel-phosphorus underplating, brass body with copper-tin-zinc alloy finish, and PTFE insulator. The SMC side features beryllium copper center contacts and brass body gold plated with the same plating stack, and PTFE insulator. The adapter operates reliably from −65°C to +165°C.

ROSNOL’s RF adapters combine precision engineering with cost efficiency, offering a competitive alternative to major European and American brands. All products are manufactured under ISO 9001 certified processes and fully comply with RoHS and REACH. Customization for materials, plating, and mechanical design is available to support specialized interconnect needs.