Key Specifications
Type Design:
Standard
Connection Type:
In-Series
Connector 1 Series:
SMA
Connector 1 Gender:
Plug (Male)
Connector 2 Series:
SMA
Connector 2 Gender:
Jack (Female)
Impedance (Ohm):
50
Body Style:
Straight
Connector 1 Connection Method:
Threaded (Screw-lock)
Connector 2 Connection Method:
Threaded (Screw-lock)
Frequency, Max (GHz):
18
Connector 1 Body Material:
Brass
Connector 1 Body Plating:
Nickel
Connector 2 Body Material:
Brass
Connector 2 Body Plating:
Nickel
VSWR, Max:
1.30
Power, Max (Watts):
10
Attenuation Max. (dB):
40
Description
Fixed Attenuator 40 dB | SMA Plug (Male) to SMA Jack (Female) | Screw-Lock | Brass Body
The ROSNOL FA-A1A25A-18G10W40/933-93 is a precision-engineered fixed attenuator for RF and microwave systems. It operates across DC to 18 GHz with a nominal attenuation of 40 dB, maintaining an impedance of 50 Ω and a VSWR of ≤ 1.3 (Return Loss ≥ 17.69 dB). Power handling capability is 10 W at 25°C, derated to 1 W at 125°C. Attenuation accuracy is specified at -0.6/+1.2 dB. The Screw-Lock coupling mechanism ensures secure engagement, rated for ≥500 mating cycles with captivation axial ≥27 N and radial ≥3 N·cm. Recommended torque: Recommended 0.57 N·m, Test torque 1.70 N·m.Piece-part materials and plating: centre contact—Brass, Gold plating; body—Brass, Nickel plating; insulator—PTFE; gasket—Silicone Rubber; coupling nut—Brass, Nickel plating. Heatsink—Aluminum, Black anodized. Gold plating over nickel underplating on conductive elements enhances corrosion resistance and ensures stable electrical performance. Operational temperature range: -55°C to +125°C.
ROSNOL’s precision-engineered RF attenuators deliver reliable performance and cost-effective solutions for RF and microwave systems. Manufactured in ISO 9001-certified facilities, all products comply with RoHS and REACH regulations. Customization services for materials, plating, and mechanical design are available, making ROSNOL an ideal alternative to leading European and American brands.
