RF Attenuators

RF attenuators act as resistors and are used to reduce the level of a signal within radio frequency applications and RF circuits. They have many benefits, including protecting a circuit stage from receiving a current that's too high. RF attenuators can also improve impedance match, ensuring power transfer from source to load is optimised.



Types of RF attenuators



RF attenuators come in three types:



  • Fixed RF attenuators provide an unchanging value where specific attenuation levels are needed.

  • Switched RF attenuators are made up of switches that allow varying levels of attenuation.

  • Variable RF attenuators are used when it's necessary to continuously change the level of a signal.


Choosing the right RF attenuators



To select the right RF attenuator a number of specifications need to be considered, such as attenuation, frequency and impedance. Attenuation is measured in decibels (dB) and depending on the type of attenuation you need this will either be fixed or within a range. RF attenuators are designed for devices with a certain impedance and it's important to match the impedance of the attenuator to the circuit where it will be used.


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Description Price Interface Type Attenuation Body Orientation Impedance Operating Frequency Body Plating Cable Type Contact Plating Contact Material Low Power Connector Type Gender A Gender B
RS Stock No. 404-5338
Mfr. Part No.920-N732AC
BrandYuetsu
$109.59
Each
units
- 3dB Straight 50Ω 3GHz - - - Brass - BNC - -
RS Stock No. 712-3138
Mfr. Part No.J01026A0021
$230.91
Each
units
N Plug to N Socket 20dB - 50Ω 10GHz - - - - - N - -
RS Stock No. 712-3116
Mfr. Part No.J01026A0009
$162.80
Each
units
N Plug to N Socket 20dB - 50Ω 1GHz - - - - - N - -
RS Stock No. 716-5072
Mfr. Part No.6603_SMA-50-2/199_NE
$133.43
Each
units
SMA Plug to Socket 3dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 494-830
Mfr. Part No.6820.19.A
$221.76
Each
units
SMA Plug to Socket 20dB - 50Ω DC → 18GHz - - - - Yes - - -
RS Stock No. 716-5090
Mfr. Part No.6630_SMA-50-2/199_NE
$137.90
Each
units
SMA Plug to Socket 30dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 285-9602
Mfr. Part No.R411810121
BrandRadiall
$111.69
Each
units
SMA Plug to Socket 10 dB Straight 50Ω DC to 18GHz Nickel Coaxial Gold Beryllium Copper - SMA Male Female
RS Stock No. 195-2996
Mfr. Part No.J01006A0835
$58.17
Each
units
BNC Plug to BNC Socket 6dB Straight 50Ω 0 → 1GHz - - - - - BNC Plug Socket
RS Stock No. 404-5350
Mfr. Part No.920-N732AK
BrandYuetsu
$60.95
Each
units
- 10dB Straight 50Ω 3GHz - - - Brass - BNC - -
RS Stock No. 296-8043
Mfr. Part No.R412420124
BrandRadiall
$85.35
Each
units
BNC Plug to BNC Socket 20dB Straight 50Ω 3GHz - - Gold over Nickel Beryllium Copper, Brass - BNC Female Male
RS Stock No. 285-9674
Mfr. Part No.R412703124
BrandRadiall
$84.14
Each
units
N Plug to N Socket 3dB Straight 50Ω 3GHz - - Gold over Nickel Beryllium Copper, Brass - N Female Male
RS Stock No. 494-874
Mfr. Part No.6803_N-50-1/1--_NE
$126.39
Each
units
N Plug to N Socket 0.3 dB, 3 dB - 50Ω DC to 6GHz - - - - Yes N - -
RS Stock No. 494-802
Mfr. Part No.6806.17.B
$407.79
Each
units
N Plug to N Socket 0.8 dB, 6 dB - 50Ω 18GHz - - - - Yes N - -
RS Stock No. 404-5344
Mfr. Part No.920-N732AF
BrandYuetsu
$60.95
Each
units
- 6dB Straight 50Ω 3GHz - - - Brass - BNC - -
RS Stock No. 494-799
Mfr. Part No.6830.19.A
$219.76
Each
units
SMA Plug to Socket 30dB - 50Ω DC → 18GHz - - - - Yes - - -
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