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    40dB 50W RF Fixed Attenuator, 50 Ohm

    High frequency fixed RF attenuator for sale, frequency range from DC to 4GHz, attenuation value 40dB, impedance 50 Ohm, working power 50W at 25℃. Economical price coaxial attenuator is an essential electronic component designed for radio frequency (RF) applications, particularly in high-power microwave systems such as those used in GPS devices. This coaxial device operates passively to reduce signal strength while maintaining a consistent impedance across a specific frequency range.
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    Delivery date: 6-12 days

    40dB 50 watt fixed coaxial attenuator designed for in-line use, seamlessly integrates into coaxial systems, making it a versatile solution for various electronic setups. Employing advanced microstrip technology, the fixed RF attenuator effectively minimizes signal levels without introducing significant reflections or distortions.


    • Model: ATO-SMAJKS-04-50W-40dB
    • Frequency Range (Optional): DC~4GHz
    • Standing Wave Ratio (VSWR): 1.2 (Max)
    • Attenuation Value: 40dB
    • Attenuation Accuracy: ±0.7dB
    • Impedance: 50 Ohm
    • Power: 50W@25℃
    • Pick Power: 1kW (5μsce Pulse Width, 2% Duty Cycle)
    • A connector Type: SMA-Male
    • B connector type: SMA-Female
    • Directionality: SMA Male Input, SMA Female Output
    • Temperature Coefficient: <0.0004dB/℃
    • Working Temperature: -55℃~+100℃
    • Inner Conductor Material: Beryllium Bronze with Gold Plating
    • Outer Conductor Material: Brass Plated with Ternary Alloy
    • Heat Sink: Aluminum Alloy Black
    • Insulator: PTFE

    Dimension (Unit: mm)

    3dB~40dB 50W RF fixed attenuator dimension

    Tips: Difference between dB and dBm when specifying attenuation

    dB (decibel) and dBm (decibel-milliwatt) are units used to express the magnitude of a change in power. While both measure relative power levels, they differ in reference points. dB is a dimensionless unit representing a logarithmic ratio of two power levels. dBm, on the other hand, specifically references power relative to 1 milliwatt.

    When specifying attenuation, dB is often used to denote the ratio of output power to input power, regardless of the absolute power levels. dBm, however, provides a direct measurement of power in relation to 1 milliwatt. For attenuation expressed in dBm, it indicates the difference between the input and output power levels in milliwatts.

    In summary, dB is a relative measure, and dBm is an absolute measure referenced to 1 milliwatt, making dBm more suitable for specifying power levels in practical applications.

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