SMA Plug (Male) to SMB Plug (Male) Adapter, DC-4GHz VSWR 1.35

SMA Plug (Male) to SMB Plug (Male) | Straight Adapter | Screw-lock | Brass Body

The ROSNOL AD-A1S15A/911-911 adapter delivers stable RF performance with 50 Ω impedance and DC–4 GHz frequency range. It achieves VSWR ≤ 1.35 (≥ 16.54 dB return loss), insertion loss ≤ 0.04 × √F (GHz) dB, and insulation resistance ≥ 5 GΩ. Contact resistance is ≤ 3 mΩ (SMA) and ≤ 5 mΩ (SMB), while outer contact resistance is ≤ 2 mΩ and ≤ 2.5 mΩ respectively. Rated for 750 V rms test voltage and 250 V rms working voltage, it supports RF leakage ≥ 55 dB up to 1 GHz. Mechanical integrity includes screw-lock coupling, axial captivation ≥ 10 N, torque range 0.8–1.1 Nm, and minimum 500 mating cycles.

The SMA and SMB bodies are brass with 3 μinch gold plating over 80 μinch non-magnetic nickel-phosphorus underplating for corrosion resistance. Center contacts are beryllium copper with gold plating for optimal conductivity. Insulators are PTFE for both ends, complemented by silicone rubber gaskets for environmental sealing. Dimensions include overall length 24.9 mm [.980 in], hex size 8 mm [.315 in], and diameter 9 mm [.354 in].

ROSNOL’s precision-engineered RF adapters deliver reliable performance across a wide range of RF and microwave systems. Designed to meet the stringent demands of high-frequency signal transmission, ROSNOL adapters offer a cost-effective alternative 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, ensuring global environmental and safety standards. Customization services for materials, plating, and mechanical design are available to support specialized interconnect requirements.