We are pleased to introduce the FSFA100-18 series, a high-power coaxial fixed attenuator designed for reliable power management in RF and microwave systems up to 18 GHz.
High Power Handling in a Compact Design
The FSFA100-18 handles 100 W average power at 25 °C and 1 kW peak power (5 μs pulse width, 5% duty cycle), making it well suited for high-power test setups, transmitter power measurement, and instrument protection. With a 50 Ω nominal impedance and coverage from DC to 18 GHz, it delivers stable performance across a wide frequency range.
Precise Attenuation, Low VSWR
Available attenuation values range from 6 to 60 dB, with accuracy as tight as ±0.7 dB at lower frequencies. VSWR is maintained at 1.20:1 (DC-4 GHz) and stays below 1.45:1 across the full DC-18 GHz range, ensuring minimal reflection and clean signal integrity.
| Frequency Range | VSWR (Max.) | Attenuation Accuracy |
|---|---|---|
| DC-4 GHz | 1.20:1 | ±0.7 to ±1.0 dB |
| DC-8 GHz | 1.25:1 | ±0.8 to ±1.0 dB |
| DC-12.4 GHz | 1.35:1 | ±0.9 to ±1.2 dB |
| DC-18 GHz | 1.45:1 | ±1.3 to ±1.5 dB |
Rugged, Field-Ready Construction
Built with a brass outer conductor and a black anodized aluminum heat sink, the FSFA100-18 uses natural convection cooling for dependable operation without forced air. It operates over a wide temperature range of -55 °C to +125 °C, suitable for both laboratory and harsh environments.
Standard connector configuration is N Male to N Female, with customizable options available. Dimensions are 156 × 110 × 120 mm.
Ordering Information
Model: FSFA100-FF-XX-CC
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FF = Frequency option (4, 8, 12.4, or 18 GHz)
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XX = Attenuation value in dB
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CC = Connector configuration (N = N Male-Female; NFNF = N Female-Female)
Example: 8 GHz, 20 dB, N(m)-N(f) → FSFA100-8-20-N
Applications
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High-power transmitter testing
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Spectrum analyzer and power meter protection
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RF/microwave system power level control
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Impedance matching and isolation
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Calibration and measurement setups
For inquiries, samples, or custom configurations, please contact our sales team： sales@fasnwave.com