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. 716-5075
Mfr. Part No.6630_SMA-50-1/199_NE
£76.03
Each
Units
SMA Plug to Socket 30dB - 50Ω DC to 18GHz - - - - Yes SMA - -
RS Stock No. 494-799
Mfr. Part No.6830.19.A
£93.29
Each
Units
SMA Plug to Socket 30dB - 50Ω DC → 18GHz - - - - Yes - - -
RS Stock No. 716-5097
Mfr. Part No.6820.17.A
£126.73
Each
Units
N Plug to N Socket 0.8 dB, 20 dB - 50Ω 12.4GHz - - - - Yes N - -
RS Stock No. 296-8093
Mfr. Part No.R412520124
BrandRadiall
£51.44
Each
Units
TNC Plug to TNC Socket 20dB Straight 50Ω 3GHz - - Gold Brass - TNC Female Male
RS Stock No. 716-5088
Mfr. Part No.6601_SMA-50-1/199_NE
£75.97
Each
Units
SMA Plug to Socket 1dB - 50Ω DC to 18GHz - - - - Yes SMA - -
RS Stock No. 886-3256
Mfr. Part No.FLN3G
£1.212
Each (In a Pack of 10)
Units
F Plug to F Socket - Straight - 1GHz - - Nickel - - F Plug Socket
RS Stock No. 494-824
Mfr. Part No.6810.19.A
£93.29
Each
Units
SMA Plug to Socket 10dB - 50Ω DC → 18GHz - - - - Yes - - -
RS Stock No. 716-5101
Mfr. Part No.6820.17.B
£189.97
Each
Units
N Plug to N Socket 1 dB, 20 dB - 50Ω 18GHz - - - - Yes N - -
RS Stock No. 712-3116
Mfr. Part No.J01026A0009
£68.49
Each
Units
N Plug to N Socket 20dB - 50Ω 1GHz - - - - - N - -
RS Stock No. 712-3122
Mfr. Part No.J01026A0018
£122.38
Each
Units
N Plug to N Socket 3dB - 50Ω 10GHz - - - - - N - -
RS Stock No. 195-2980
Mfr. Part No.J01006A0834
£21.66
Each
Units
BNC Plug to BNC Socket 3dB Straight 50Ω 0 → 1GHz - - - - - BNC Plug Socket
RS Stock No. 712-3129
Mfr. Part No.J01026A0020
£122.38
Each
Units
N Plug to N Socket 10dB - 50Ω 10GHz - - - - - N - -
RS Stock No. 494-834
Mfr. Part No.6806.19.A
£122.56
Each
Units
SMA Plug to Socket 6dB - 50Ω DC → 18GHz - - - - Yes - - -
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
RS Stock No. 494-802
Mfr. Part No.6806.17.B
£144.26
Each
Units
N Plug to N Socket 0.8 dB, 6 dB - 50Ω 18GHz - - - - Yes N - -
RS Stock No. 716-5069
Mfr. Part No.6603_SMA-50-1/199_NE
£76.02
Each
Units
SMA Plug to Socket 3dB - 50Ω DC to 18GHz - - - - Yes SMA - -
RS Stock No. 277-9461
Mfr. Part No.4119-50
BrandFluke
£39.96
Each
Units
BNC Plug to BNC Socket - Straight 50Ω 500MHz - - Gold Beryllium Copper, Brass - BNC Plug Socket
RS Stock No. 494-913
Mfr. Part No.6803.19.A
£102.46
Each
Units
SMA Plug to Socket 3dB - 50Ω DC to 18GHz - - - - Yes SMA - -
RS Stock No. 716-5084
Mfr. Part No.6610_SMA-50-2/199_NE
£62.01
Each
Units
SMA Plug to Socket 10dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 712-3125
Mfr. Part No.J01026A0019
£119.96
Each
Units
N Plug to N Socket 6dB - 50Ω 10GHz - - - - - N - -
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