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. 712-3138
Mfr. Part No.J01026A0021
£97.14
Each
Units
N Plug to N Socket 20dB - 50Ω 10GHz - - - - - N - -
RS Stock No. 712-3015
Mfr. Part No.J01016A0006
£71.18
Each
Units
TNC Plug to TNC Socket 10dB - 50 Ω, 75 Ω 10GHz - - - - - TNC - -
RS Stock No. 296-8015
Mfr. Part No.R412403124
BrandRadiall
£40.26
Each
Units
BNC Plug to BNC Socket 3dB Straight 50Ω 3GHz - - Gold over Nickel Beryllium Copper, Brass - BNC Female Male
RS Stock No. 716-5072
Mfr. Part No.6603_SMA-50-2/199_NE
£62.73
Each
Units
SMA Plug to Socket 3dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 712-2949
Mfr. Part No.J01006A0023
£96.24
Each
Units
BNC Plug to BNC Socket 6dB - 50Ω 6GHz - - - - - BNC - -
RS Stock No. 404-5350
Mfr. Part No.920-N732AK
BrandYuetsu
£25.64
Each
Units
- 10dB Straight 50Ω 3GHz - - - Brass - BNC - -
RS Stock No. 712-3018
Mfr. Part No.J01016A0007
£45.92
Each
Units
TNC Plug to TNC Socket 20dB - 50 Ω, 75 Ω 10GHz - - - - - TNC - -
RS Stock No. 285-9753
Mfr. Part No.R414720000
BrandRadiall
£90.16
Each
Units
N Plug to N Socket 20dB Straight 50Ω 12.4GHz - - Nickel Beryllium Copper - N Female Male
RS Stock No. 296-8021
Mfr. Part No.R412406124
BrandRadiall
£43.89
Each
Units
BNC Plug to BNC Socket 6dB Straight 50Ω 3GHz - - Gold over Nickel Beryllium Copper, Brass - BNC Female Male
RS Stock No. 716-5081
Mfr. Part No.6606_SMA-50-2/199_NE
£62.73
Each
Units
SMA Plug to Socket 6dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 712-3107
Mfr. Part No.J01026A0008
£28.10
Each
Units
N Plug to N Socket 14dB - 50Ω 1GHz - - - - - N - -
RS Stock No. 712-3327
Mfr. Part No.J01156A0011
£63.86
Each
Units
SMA Plug to Socket 3dB - 50Ω 10GHz - - - - - SMA - -
RS Stock No. 176-7218
Mfr. Part No.AT-105V
BrandHirose
£32.70
Each
Units
- 5dB Straight 50Ω 18GHz - - Gold Beryllium Copper - SMA Male Female
RS Stock No. 176-7268
Mfr. Part No.AT-106V
BrandHirose
£32.70
Each
Units
- 6dB Straight 50Ω 18GHz - - Gold Beryllium Copper - SMA Male Female
RS Stock No. 176-7264
Mfr. Part No.AT-130V
BrandHirose
£35.32
Each
Units
- 30dB Straight 50Ω 18GHz - - Gold Beryllium Copper - SMA Male Female
RS Stock No. 179-2543
Mfr. Part No.R415606000
BrandRadiall
£121.44
Each
Units
Coaxial 6dB Straight 50Ω 6GHz Nickel - Gold over Nickel Beryllium Copper Yes Coaxial Male Female
RS Stock No. 176-7266
Mfr. Part No.AT-120V
BrandHirose
£32.40
Each
Units
- 20dB Straight 50Ω 18GHz - - Gold Beryllium Copper - SMA Male Female
RS Stock No. 285-9731
Mfr. Part No.R414706000
BrandRadiall
£87.01
Each
Units
N Plug to N Socket 6dB Straight 50Ω 12.4GHz - - Gold over Nickel Beryllium Copper - N Female Male
RS Stock No. 179-2544
Mfr. Part No.R415620000
BrandRadiall
£121.44
Each
Units
Coaxial 20dB Straight 50Ω 6GHz Nickel - Gold over Nickel Beryllium Copper Yes Coaxial Male Female
RS Stock No. 176-7267
Mfr. Part No.AT-110V
BrandHirose
£32.70
Each
Units
- 10dB Straight 50Ω 18GHz - - Gold Beryllium Copper - SMA Male Female
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