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

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

The ROSNOL AD-N1S25A/144-11 is a straight RF adapter designed for reliable connectivity between N plug male and SMB jack female interfaces. It supports DC to 4 GHz with 50-ohm impedance, VSWR ≤ 1.17, and insertion loss ≤ 0.05√F (GHz) dB. Electrical specifications include 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 unit employs screw-lock coupling on the N side and snap-lock on the SMB side, features axial captivation ≥ 10 N, and is qualified for at least 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.

Material and plating details ensure corrosion resistance and stable RF performance. The SMB center contact and body are brass with gold plating 3 microinch over a non-magnetic nickel-phosphorus underplating 80 microinch; the insulator is PTFE. The N side uses a brass center contact with gold plating over nickel-phosphorus, a brass body finished with copper-tin-zinc alloy, a brass coupling nut, and a PTFE insulator with silicone rubber gasket. The adapter operates over a temperature range of -55°C to +155°C.

ROSNOL’s precision-engineered RF adapters offer consistent quality at competitive pricing, serving as effective alternatives to major European and American brands. All ROSNOL RF components are manufactured under ISO 9001-certified processes and are fully compliant with RoHS and REACH. Customization options for materials, plating, and mechanical design are available to support specialized application needs.