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. 285-9567
Mfr. Part No.R411820124
BrandRadiall
£31.83
Each
Units
SMA Plug to Socket 20dB Straight 50Ω 6GHz - - Nickel Brass - SMA Male Socket
RS Stock No. 285-9551
Mfr. Part No.R411810124
BrandRadiall
£22.93
Each
Units
SMA Plug to Socket 10dB Straight 50Ω 6GHz - - Nickel Brass - SMA Male Socket
RS Stock No. 285-9573
Mfr. Part No.R411803121
BrandRadiall
£56.86
Each
Units
SMA Plug to Socket 3dB Straight 50Ω 18GHz - - - Stainless Steel - SMA Male Socket
RS Stock No. 285-9696
Mfr. Part No.R412710124
BrandRadiall
£43.98
Each
Units
N Plug to N Socket 0.5 dB, 10 dB - 50Ω DC to 6GHz - - - - - N - -
RS Stock No. 285-9674
Mfr. Part No.R412703124
BrandRadiall
£30.61
Each
Units
N Plug to N Socket 3dB Straight 50Ω 3GHz - - Gold over Nickel Beryllium Copper, Brass - N Female Male
RS Stock No. 285-9545
Mfr. Part No.R411806124
BrandRadiall
£29.24
Each
Units
SMA Plug to Socket 6dB Straight 50Ω 6GHz - - Nickel Brass - SMA Male Socket
RS Stock No. 285-9595
Mfr. Part No.R411806121
BrandRadiall
£42.43
Each
Units
SMA Plug to Socket 0.8 dB, 6 dB - 50Ω DC → 18GHz - - - - - SMA - -
RS Stock No. 285-9539
Mfr. Part No.R411803124
BrandRadiall
£21.60
Each
Units
SMA Plug to Socket 3dB Straight 50Ω 6GHz - - Nickel Brass - SMA Male Socket
RS Stock No. 285-9680
Mfr. Part No.R412706124
BrandRadiall
£41.98
Each
Units
N Plug to N Socket 6dB Straight 50Ω 6GHz - - Gold over Nickel Beryllium Copper, Brass - N Female Male
RS Stock No. 285-9618
Mfr. Part No.R411820121
BrandRadiall
£68.84
Each
Units
SMA Plug to Socket 20dB Straight 50Ω 18GHz - - - Stainless Steel - SMA Male Socket
RS Stock No. 285-9602
Mfr. Part No.R411810121
BrandRadiall
£60.49
Each
Units
SMA Plug to Socket 10 dB Straight 50Ω DC to 18GHz Nickel Coaxial Gold Beryllium Copper - SMA Male Female
RS Stock No. 125-0327
Mfr. Part No.R415610000
BrandRadiall
£148.91
Each
Units
Coaxial 10dB Straight 50Ω DC-6GHz Nickel - Gold over Nickel Beryllium Copper Yes Coaxial Male Female
RS Stock No. 285-9719
Mfr. Part No.R412720124
BrandRadiall
£45.98
Each
Units
N Plug to N Socket 20dB Straight 50Ω 6GHz - - Nickel Beryllium Copper, Brass - N Female Male
RS Stock No. 296-8059
Mfr. Part No.R412503124
BrandRadiall
£48.87
Each
Units
TNC Plug to TNC Socket 3dB Straight 50Ω 3GHz - - Gold Brass - TNC Female Male
RS Stock No. 285-9747
Mfr. Part No.R414710000
BrandRadiall
£90.16
Each
Units
N Plug to N Socket 10dB Straight 50Ω 12.4GHz - - Gold over Nickel Beryllium Copper - N Female Male
RS Stock No. 285-9725
Mfr. Part No.R414703000
BrandRadiall
£84.01
Each
Units
N Plug to N Socket 0.7 dB, 3 dB - 50Ω DC → 12.4GHz - - - - - N - -
RS Stock No. 296-8087
Mfr. Part No.R412510124
BrandRadiall
£49.56
Each
Units
TNC Plug to TNC Socket 10dB Straight 50Ω 3GHz - - Gold Brass - TNC Female Male
RS Stock No. 296-8043
Mfr. Part No.R412420124
BrandRadiall
£47.86
Each
Units
BNC Plug to BNC Socket 20dB Straight 50Ω 3GHz - - Gold over Nickel Beryllium Copper, Brass - BNC Female Male
RS Stock No. 296-8093
Mfr. Part No.R412520124
BrandRadiall
£50.18
Each
Units
TNC Plug to TNC Socket 20dB Straight 50Ω 3GHz - - Gold Brass - TNC Female Male
RS Stock No. 125-0326
Mfr. Part No.R415603000
BrandRadiall
£148.91
Each
Units
Coaxial 3dB Straight 50Ω DC-6GHz Nickel - Gold over Nickel Beryllium Copper Yes Coaxial Male Female