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. 285-9602
Mfr. Part No.R411810121
BrandRadiall
TWD1,724
Each
units
SMA Plug to Socket 10 dB Straight 50Ω DC to 18GHz Nickel Coaxial Gold Beryllium Copper - SMA Male Female
RS Stock No. 494-913
Mfr. Part No.6803.19.A
TWD5,268
Each
units
SMA Plug to Socket 3dB - 50Ω DC to 18GHz - - - - Yes SMA - -
RS Stock No. 285-9618
Mfr. Part No.R411820121
BrandRadiall
TWD2,681
Each
units
SMA Plug to Socket 20dB Straight 50Ω 18GHz - - - Stainless Steel - SMA Male Socket
RS Stock No. 494-830
Mfr. Part No.6820.19.A
TWD6,363
Each
units
SMA Plug to Socket 20dB - 50Ω DC → 18GHz - - - - Yes - - -
RS Stock No. 716-5069
Mfr. Part No.6603_SMA-50-1/199_NE
TWD2,668
Each
units
SMA Plug to Socket 3dB - 50Ω DC to 18GHz - - - - Yes SMA - -
RS Stock No. 716-5066
Mfr. Part No.6620_SMA-50-1/199_NE
TWD2,264
Each
units
SMA Plug to Socket 20dB - 50Ω DC to 18GHz - - - - Yes SMA - -
RS Stock No. 494-824
Mfr. Part No.6810.19.A
TWD3,791
Each
units
SMA Plug to Socket 10dB - 50Ω DC → 18GHz - - - - Yes - - -
RS Stock No. 716-5084
Mfr. Part No.6610_SMA-50-2/199_NE
TWD1,896
Each
units
SMA Plug to Socket 10dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 285-9573
Mfr. Part No.R411803121
BrandRadiall
TWD2,354
Each
units
SMA Plug to Socket 3dB Straight 50Ω 18GHz - - - Stainless Steel - SMA Male Socket
RS Stock No. 494-834
Mfr. Part No.6806.19.A
TWD5,490
Each
units
SMA Plug to Socket 6dB - 50Ω DC → 18GHz - - - - Yes - - -
RS Stock No. 716-5094
Mfr. Part No.6810.01.A
TWD3,076
Each
units
BNC Plug to BNC Socket 0.5 dB, 10 dB - 50Ω 4GHz - - - - Yes BNC - -
RS Stock No. 886-0560
Mfr. Part No.27-9300-10
TWD213
Each (In a Pack of 10)
units
BNC Plug to BNC Socket 10dB Straight 50Ω 0 → 2GHz Nickel - Gold Brass - BNC Plug Socket
RS Stock No. 716-5081
Mfr. Part No.6606_SMA-50-2/199_NE
TWD2,516
Each
units
SMA Plug to Socket 6dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 285-9551
Mfr. Part No.R411810124
BrandRadiall
TWD718
Each
units
SMA Plug to Socket 10dB Straight 50Ω 6GHz - - Nickel Brass - SMA Male Socket
RS Stock No. 285-9539
Mfr. Part No.R411803124
BrandRadiall
TWD679
Each
units
SMA Plug to Socket 3dB Straight 50Ω 3GHz - - Nickel Brass - SMA Male Socket
RS Stock No. 296-8037
Mfr. Part No.R412410124
BrandRadiall
TWD1,568
Each
units
BNC Plug to BNC Socket 10dB Straight 50Ω 3GHz - - Gold over Nickel Beryllium Copper, Brass - BNC Female Male
RS Stock No. 886-3256
Mfr. Part No.FLN3G
TWD59
Each (In a Pack of 10)
units
F Plug to F Socket - Straight - 1GHz - - Nickel - - F Plug Socket
RS Stock No. 716-5113
Mfr. Part No.6620_SMA-50-2/199_NE
TWD2,801
Each
units
SMA Plug to Socket 20dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 712-3333
Mfr. Part No.J01156A0041
TWD2,945
Each
units
SMA Plug to Socket 20dB - 50Ω 10GHz - - - - - SMA - -
RS Stock No. 285-9545
Mfr. Part No.R411806124
BrandRadiall
TWD639
Each
units
SMA Plug to Socket 6dB Straight 50Ω 6GHz - - Nickel Brass - SMA Male Socket