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. 712-3125
Mfr. Part No.J01026A0019
£119.96
Each
Units
N Plug to N Socket 6dB - 50Ω 10GHz - - - - - N - -
RS Stock No. 716-5126
Mfr. Part No.6906.01.A
£76.72
Each
Units
BNC Plug to BNC Socket 0.4 dB, 6 dB - 50Ω DC → 1GHz - - - - Yes BNC - -
RS Stock No. 404-5366
Mfr. Part No.920-N732AP
BrandYuetsu
£25.64
Each
Units
- 20dB Straight 50Ω 3GHz - - - Brass - BNC - -
RS Stock No. 296-8037
Mfr. Part No.R412410124
BrandRadiall
£43.75
Each
Units
BNC Plug to BNC Socket 10dB Straight 50Ω 3GHz - - Gold over Nickel Beryllium Copper, Brass - BNC Female Male
RS Stock No. 716-5110
Mfr. Part No.6602_SMA-50-2/199_NE
£62.73
Each
Units
SMA Plug to Socket 2dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 404-5344
Mfr. Part No.920-N732AF
BrandYuetsu
£25.64
Each
Units
- 6dB Straight 50Ω 3GHz - - - Brass - BNC - -
RS Stock No. 285-9781
Mfr. Part No.R414710161
BrandRadiall
£224.16
Each
Units
N Plug to N Socket 10dB Straight 50Ω 18GHz - - Gold over Nickel Beryllium Copper - N Female Male
RS Stock No. 716-5107
Mfr. Part No.6601_SMA-50-2/199_NE
£62.73
Each
Units
SMA Plug to Socket 1dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 712-3006
Mfr. Part No.J01016A0005
£71.18
Each
Units
TNC Plug to TNC Socket 6dB - 50 Ω, 75 Ω 10GHz - - - - - TNC - -
RS Stock No. 716-5113
Mfr. Part No.6620_SMA-50-2/199_NE
£62.73
Each
Units
SMA Plug to Socket 20dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 712-3330
Mfr. Part No.J01156A0031
£42.92
Each
Units
SMA Plug to Socket 10dB - 50Ω 10GHz - - - - - SMA - -
RS Stock No. 404-5338
Mfr. Part No.920-N732AC
BrandYuetsu
£25.64
Each
Units
- 3dB Straight 50Ω 3GHz - - - Brass - BNC - -
RS Stock No. 712-3100
Mfr. Part No.J01026A0006
£31.51
Each
Units
N Plug to N Socket 3dB - 50Ω 1GHz - - - - - N - -
RS Stock No. 886-0241
Mfr. Part No.6-12FFPB
£4.30
Each (In a Pack of 6)
Units
F Plug to F Socket - Straight 75Ω - - - - - - F Plug Plug
RS Stock No. 716-5129
Mfr. Part No.6604_SMA-50-1/199_NE
£76.88
Each
Units
SMA Plug to Socket 4dB - 50Ω DC to 18GHz - - - - Yes SMA - -
RS Stock No. 716-5117
Mfr. Part No.6605_SMA-50-1/199_NE
£76.88
Each
Units
SMA Plug to Socket 5dB - 50Ω DC to 18GHz - - - - Yes SMA - -
RS Stock No. 885-7517
Mfr. Part No.ATT-0218-20-NNN-02
£95.99
Each
Units
N Plug to N Socket 20dB Straight 50Ω 12.4GHz - - - - Yes N Plug Socket
RS Stock No. 285-9797
Mfr. Part No.R414720161
BrandRadiall
£224.16
Each
Units
N Plug to N Socket 20dB Straight 50Ω 18GHz - - Gold over Nickel Beryllium Copper - N Female Male
RS Stock No. 716-5062
Mfr. Part No.6606_SMA-50-1/199_NE
£76.88
Each
Units
SMA Plug to Socket 6dB - 50Ω DC to 18GHz - - - - Yes SMA - -
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 - -
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