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. 125-0327
Mfr. Part No.R415610000
BrandRadiall
$250.04
Each
units
Coaxial 10dB Straight 50Ω DC-6GHz Nickel - Gold over Nickel Beryllium Copper Yes Coaxial Male Female
RS Stock No. 885-8416
Mfr. Part No.27-9300-20
$13.41
Each
units
BNC Plug to BNC Socket 20dB Straight 50Ω 0 → 2GHz Nickel - Gold Brass - BNC Plug Socket
RS Stock No. 195-3012
Mfr. Part No.J01006A0836
$47.64
Each
units
BNC Plug to BNC Socket 10dB Straight 50Ω 0 → 1GHz - - - - - BNC Plug Socket
RS Stock No. 494-834
Mfr. Part No.6806.19.A
$241.09
Each
units
SMA Plug to Socket 6dB - 50Ω DC → 18GHz - - - - Yes - - -
RS Stock No. 716-5094
Mfr. Part No.6810.01.A
$194.79
Each
units
BNC Plug to BNC Socket 0.5 dB, 10 dB - 50Ω 4GHz - - - - Yes BNC - -
RS Stock No. 125-0326
Mfr. Part No.R415603000
BrandRadiall
$254.46
Each
units
Coaxial 3dB Straight 50Ω DC-6GHz Nickel - Gold over Nickel Beryllium Copper Yes Coaxial Male Female
RS Stock No. 285-9551
Mfr. Part No.R411810124
BrandRadiall
$50.95
Each
units
SMA Plug to Socket 10dB Straight 50Ω 6GHz - - Nickel Brass - SMA Male Socket
RS Stock No. 395-0453
Mfr. Part No.J01006A0837
$51.82
Each
units
BNC Plug to BNC Socket 20dB Straight 50Ω 0 → 1GHz - - - - - BNC Plug Socket
RS Stock No. 285-9696
Mfr. Part No.R412710124
BrandRadiall
$82.43
Each
units
N Plug to N Socket 0.5 dB, 10 dB - 50Ω DC to 6GHz - - - - - N - -
RS Stock No. 494-802
Mfr. Part No.6806.17.B
$444.86
Each
units
N Plug to N Socket 0.8 dB, 6 dB - 50Ω 18GHz - - - - Yes N - -
RS Stock No. 716-5113
Mfr. Part No.6620_SMA-50-2/199_NE
$123.52
Each
units
SMA Plug to Socket 20dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 285-9674
Mfr. Part No.R412703124
BrandRadiall
$82.43
Each
units
N Plug to N Socket 3dB Straight 50Ω 3GHz - - Gold over Nickel Beryllium Copper, Brass - N Female Male
RS Stock No. 716-5129
Mfr. Part No.6604_SMA-50-1/199_NE
$154.47
Each
units
SMA Plug to Socket 4dB - 50Ω DC to 18GHz - - - - Yes SMA - -
RS Stock No. 494-806
Mfr. Part No.6803.17.B
$490.82
Each
units
N Plug to N Socket 0.8 dB, 3 dB - 50Ω 18GHz - - - - Yes N - -
RS Stock No. 716-5117
Mfr. Part No.6605_SMA-50-1/199_NE
$152.07
Each
units
SMA Plug to Socket 5dB - 50Ω DC to 18GHz - - - - Yes SMA - -
RS Stock No. 285-9781
Mfr. Part No.R414710161
BrandRadiall
$276.81
Each
units
N Plug to N Socket 10dB Straight 50Ω 18GHz - - Gold over Nickel Beryllium Copper - N Female Male
RS Stock No. 716-5132
Mfr. Part No.6830.17.B
$218.18
Each
units
N Plug to N Socket 1.5 dB, 30 dB - 50Ω 18GHz - - - - Yes N - -
RS Stock No. 716-5104
Mfr. Part No.6830.01.A
$137.59
Each
units
BNC Plug to BNC Socket 1 dB, 30 dB - 50Ω 4GHz - - - - Yes BNC - -
RS Stock No. 886-0566
Mfr. Part No.27-9300-6
$12.50
Each
units
BNC Plug to BNC Socket 6dB Straight 50Ω 0 → 2GHz Nickel - Gold Brass - BNC Plug Socket
RS Stock No. 179-2543
Mfr. Part No.R415606000
BrandRadiall
$198.11
Each
units
Coaxial 6dB Straight 50Ω 6GHz Nickel - Gold over Nickel Beryllium Copper Yes Coaxial Male Female
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