Key Specifications
Type Design:
Standard
Connection Type:
In-Series
Connector 1 Series:
SMA
Connector 1 Gender:
Jack (Female)
Connector 2 Series:
SMA
Connector 2 Gender:
Plug (Male)
Impedance (Ohm):
50
Body Style:
Straight
Connector 1 Connection Method:
Threaded (Screw-lock)
Connector 2 Connection Method:
Threaded (Screw-lock)
Frequency, Max (GHz):
12.4
Connector 1 Body Material:
Stainless Steel
Connector 1 Body Plating:
Passivated
Connector 2 Body Material:
Stainless Steel
Connector 2 Body Plating:
Passivated
VSWR, Max:
1.20
Power, Max (Watts):
5
Attenuation Max. (dB):
20
Description
Fixed Attenuator 20 dB | SMA Plug (Male) to SMA Jack (Female) | Screw-Lock | Stainless Steel Body
The ROSNOL FA-A1A25A-12.4G5W20/9XX-9X is a precision-engineered fixed attenuator for high-frequency interconnects. Operating across DC to 12.4 GHz, it provides a nominal attenuation of 20 dB, maintains 50 Ω impedance, and achieves a VSWR of ≤ 1.20 (Return Loss ≥ 20.9 dB). Power handling capability is 5 W average at 25°C. Attenuation accuracy is specified at −0.6/+0.8 dB. The Screw-Lock coupling mechanism delivers secure engagement, with contact captivation rated at axial ≥27 N and radial ≥3 N·cm, and mechanical durability of ≥500 mating cycles. Recommended coupling torque is 0.8–1.1 N·m (test torque ≤1.7 N·m).Piece-part materials and plating are engineered for reliability: centre contact—Beryllium Copper, Gold Plating over Nickel underplating; body—Stainless Steel, Passivated; insulator—PEI; gasket—Silicone Rubber; coupling nut—Stainless Steel, Passivated. Gold plating over nickel underplating on conductive elements enhances corrosion resistance and ensures stable electrical performance over time. Rated operating temperature span is -65°C to +155°C.
ROSNOL’s precision-engineered RF attenuators offer dependable performance at competitive pricing for RF and microwave systems. All products are manufactured in ISO 9001-certified facilities and fully comply with RoHS and REACH regulations. Customization services for materials, plating, and mechanical design are available, making ROSNOL an effective alternative to leading European and American brands.
