2.92mm (K) attenuator, 3dB, 2W, DC–40 GHz – Millimeter-wave Performance

2.92mm (K) 3 dB Coaxial Attenuator, 2 W, DC–40 GHz – Millimeter-Wave Performance

The QAXIAL ATK-0302-40 is a precision 3 dB fixed coaxial attenuator designed for reliable wideband operation from DC to 40 GHz. Featuring a robust passivated stainless-steel body, precision 2.92mm (K) male–female connectors and gold-plated BeCu center contacts, it provides stable attenuation and consistent RF performance across the microwave and millimeter-wave frequency range.

With 2 W average input power at 25 °C and a maximum VSWR of 1.25, this attenuator delivers predictable performance in demanding RF and microwave environments. Its ±0.7 dB attenuation accuracy makes it suitable for microwave test benches, signal level adjustment, fixed attenuation stages and high-frequency front-end measurements. The device also supports 200 W peak power handling (5 µs pulse, 1% duty cycle), with average power linearly derated to 0.2 W at 100 °C.

The attenuator features a mechanical interface conforming to MIL-STD-348A, with a passivated stainless-steel body and coupling nut, gold-plated beryllium copper center contacts and a PEI insulator. Its compact, bidirectional design ensures flexible integration into high-frequency RF assemblies and measurement systems. With an operating temperature range of -55 °C to +100 °C, it is engineered for reliable operation in a wide range of RF and microwave applications.

Main Features

• 3 dB fixed 2.92mm (K) coaxial attenuator for microwave and millimeter-wave applications
• Wideband DC–40 GHz operation with stable attenuation
• 2 W average input power at 25 °C, 200 W peak (5 µs, 1% duty cycle)
• VSWR ≤ 1.25 for consistent high-frequency performance
• ±0.7 dB attenuation accuracy across the specified frequency range
• Precision 2.92mm (K) male–female connectors with 50 Ohm impedance
• Bidirectional operation for flexible RF system integration
• Rugged passivated stainless-steel construction with gold-plated BeCu center contacts
• MIL-STD-348A mechanical interface
• Operating temperature range from -55 °C to +100 °C
• RoHS & REACH compliant as specified in the datasheet

Typical Applications

• RF, microwave and millimeter-wave test benches up to 40 GHz
• Signal level adjustment and fixed 3 dB attenuation in high-frequency RF chains
• Signal conditioning for sensitive RF measurement instruments
• Radar systems, microwave front-ends and high-frequency communication equipment
• Vector network analyzer (VNA) measurements and RF component characterization
• Prototyping, validation and testing of microwave and millimeter-wave subsystems
• Laboratory and production test environments requiring compact, precision 2.92mm attenuators