Key Specifications
Type Design:
Standard
Connection Type:
Between Series
Connector 1 Series:
SMB
Connector 1 Gender:
Plug (Male)
Connector 2 Series:
SMA
Connector 2 Gender:
Jack (Female)
Impedance (Ohm):
50
Body Style:
Straight
Panel Mount:
None
Connector 1 Connection Method:
Snap-On
Connector 2 Connection Method:
Threaded (Screw-lock)
Frequency, Max (GHz):
4.0
Connector 1 Body Material:
Brass
Connector 1 Body Plating:
Gold Plating (Non-magnetic nickel-phosphorus underplating)
Connector 2 Body Material:
Brass
Connector 2 Body Plating:
Gold Plating (Non-magnetic nickel-phosphorus underplating)
VSWR, Max:
1.35
Description
SMB Plug (Male) to SMA Jack (Female) | Straight Adapter | Snap-On & Screw-Lock | Brass Body
The ROSNOL AD-S1A25A/911-91 is a precision RF adapter designed for DC to 4 GHz operation with 50 Ω impedance. It achieves VSWR ≤ 1.35 and insertion loss ≤ 0.05√F (GHz) dB, ensuring stable signal transmission and minimal loss. Insulation resistance is ≥1 GΩ, and the adapter supports ≥500 mating cycles on both sides. Coupling mechanisms include snap-on for SMB and screw-lock for SMA, with center contact captivation ≥10 N for secure engagement.Center contacts are beryllium copper with 3 microinch gold plating over an 80 microinch nickel-phosphorus underplating. Bodies and coupling nuts are brass with identical plating, and insulators are PTFE for thermal stability. Recommended torque for the SMA side is 0.8–1.1 Nm. The operating temperature range spans −65°C to +165°C, ensuring durability under harsh conditions.
ROSNOL’s precision-engineered RF adapters deliver reliable performance and cost-effective alternatives to leading global brands. All components are manufactured in ISO 9001-certified facilities and comply with RoHS and REACH standards. Customization for materials, plating, and mechanical design is available to meet specialized requirements.
