SMB Plug (Male) to SMB Jack (Female) Fixed Attenuator, 4GHz 2W 1dB VSWR 1.25

SMB Fixed Attenuator | Plug (Male) to Jack (Female) | 1 dB | 2W | Snap-On | Gold-Plated Brass Body

The ROSNOL FA-S1S25A-4G2W1/H1-H1 fixed attenuator operates from DC to 4 GHz with 50 Ω impedance and controlled VSWR performance of ≤ 1.1 up to 2 GHz and ≤ 1.25 from 2 to 4 GHz. It provides a nominal 1 dB attenuation with ±0.50 dB accuracy across DC–4 GHz and supports 2 W average input power at 25 °C, with peak power handling up to 250 W. The snap-on coupling mechanism enables rapid connection with mating cycles ≥ 500, axial center contact captivation ≥ 10 N, engagement force ≤ 63 N, and disengagement force ranging from 8 N to 63 N.

Piece-part construction includes phosphor bronze center contacts with gold plating over non-magnetic nickel–phosphorus underplating (3 µinch Au over 80 µinch Ni–P), a brass body with identical gold plating structure, and a PTFE insulator. This material combination provides stable electrical characteristics, corrosion resistance, and reliable mechanical performance across an operating temperature range of −55 °C to +125 °C.

ROSNOL’s precision-engineered RF attenuators deliver reliable performance across a wide range of RF and microwave systems. Designed to meet the stringent demands of high-frequency signal transmission, ROSNOL attenuators offer a cost-effective alternative to products from leading European and American brands. All ROSNOL RF components 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 to support specialized interconnect requirements.