Key Specifications
Type Design:
Standard
Connection Type:
Between Series
Connector 1 Series:
SMA
Connector 1 Gender:
R/P Jack (Female)
Connector 2 Series:
QMA
Connector 2 Gender:
Plug (Male)
Impedance (Ohm):
50
Body Style:
Straight
Panel Mount:
None
Connector 1 Connection Method:
Threaded (Screw-lock)
Connector 2 Connection Method:
Quick-Lock
Frequency, Max (GHz):
18
Connector 1 Body Material:
Brass
Connector 1 Body Plating:
Copper-Tin-Zinc Alloy
Connector 2 Body Material:
Phosphor Bronze
Connector 2 Body Plating:
Copper-Tin-Zinc Alloy
VSWR, Max:
1.20
Description
QMA Plug (Male) to SMA Reverse Polarity Jack (Female) | Straight Adapter | Quick-Lock & Screw-Lock | Brass Body
The ROSNOL AD-QA1A75A/9F4-94 is a precision RF adapter designed for DC to 18 GHz operation with 50 Ω impedance. It achieves VSWR ≤ 1.20 and insertion loss ≤ 0.05√F (GHz) dB, ensuring stable signal transmission and minimal loss. Coupling mechanisms include quick-lock for QMA and screw-lock for SMA RP, supporting reliable engagement for high-frequency applications.The center contacts are beryllium copper with gold plating over nickel underplating for superior conductivity and corrosion resistance. Bodies and coupling nuts are brass with copper-tin-zinc alloy finish, and insulators are PTFE for thermal stability. The operating temperature range spans −40°C to +85°C, ensuring durability under varied environmental 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.
