Key Specifications
Description
QMA Plug (Male) to SMA Jack (Female) | Straight Adapter | Quick-Lock & Screw-Lock | Brass Body
The ROSNOL AD-QA1A25B/944-94 is a high-quality RF adapter for DC to 18 GHz with 50 Ω impedance. It offers VSWR ≤ 1.20 and insertion loss ≤ 0.05√F (GHz) dB, ensuring low reflection and excellent return loss. Insulation resistance is ≥5 GΩ, and the adapter supports ≥100 mating cycles on the QMA side and ≥500 on the SMA side. Coupling mechanisms include quick-lock for QMA and screw-lock for SMA, with center contact captivation ≥20 N for secure, repeatable connections.
Center contacts are beryllium copper with 3 microinch gold plating over an 80 microinch nickel-phosphorus underplating. Bodies and coupling nuts are brass with corrosion-resistant finish, and insulators are PTFE. Recommended torque for the SMA side is 0.56 Nm. The operating temperature range is −40°C to +85°C, providing durability under demanding conditions.
ROSNOL’s precision-engineered RF adapters deliver consistent performance and represent a cost-effective alternative to leading European and American brands. All components are manufactured in ISO 9001-certified facilities and comply with RoHS and REACH standards. Customization services for materials, plating, and mechanical design are available to support specialized interconnect needs.
