N Plug (Male) to SMB Plug (Male) Adapter, DC-4GHz VSWR 1.17

N Plug (Male) to SMB Plug (Male) | Straight Adapter | Screw-Lock and Snap-Lock | Brass Body

The ROSNOL AD-N1S15A/944-911 is a straight RF adapter engineered for secure interconnection between N plug male and SMB plug male terminations. It operates from DC to 4 GHz with 50-ohm impedance, VSWR ≤ 1.17, and insertion loss ≤ 0.05√F (GHz) dB. Electrical performance includes insulation resistance ≥ 1 GΩ, test voltage 750 V rms, working voltage ≤ 250 V rms at sea level, RF leakage ≥ 55 dB up to 1 GHz, and typical contact current 1.5 A DC. The adapter combines screw-lock coupling on the N side with snap-lock on the SMB side, provides axial center-contact captivation ≥ 10 N, and is rated for a minimum of 500 mating cycles on both sides. Recommended torque on the N side is 0.7–1.1 Nm, with a maximum coupling test torque of 1.7 Nm.

Materials and plating are selected for durability and signal integrity. The SMB center contact is beryllium copper with gold plating 3 microinch over a non-magnetic nickel-phosphorus underplating 80 microinch; the SMB body and coupling nut are brass with the same gold-over-nickel-phosphorus stack, and the insulator is PTFE. On the N side, the center contact is beryllium copper with gold plating over nickel-phosphorus; the body and coupling nut are brass with copper-tin-zinc alloy finish, and the insulator is PTFE with a silicone rubber gasket for sealing. The assembly operates reliably from -55°C to +155°C.

ROSNOL’s precision-engineered RF adapters deliver high quality and dependable performance at competitive pricing, making them practical alternatives to products from leading European and American brands. All ROSNOL RF components are manufactured in ISO 9001-certified facilities and fully comply with RoHS and REACH regulations. Customization services for materials, plating, and mechanical design are available to meet specialized interconnect requirements.