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. 125-0326
Mfr. Part No.R415603000
BrandRadiall
SGD220.45
Each
units
Coaxial 3dB Straight 50Ω DC-6GHz Nickel - Gold over Nickel Beryllium Copper Yes Coaxial Male Female
RS Stock No. 712-2930
Mfr. Part No.J01006A0022
SGD153.66
Each
units
BNC Plug to BNC Socket 3dB - 50Ω 6GHz - - - - - BNC - -
RS Stock No. 296-8015
Mfr. Part No.R412403124
BrandRadiall
SGD66.41
Each
units
BNC Plug to BNC Socket 3dB Straight 50Ω 3GHz - - Gold over Nickel Beryllium Copper, Brass - BNC Female Male
RS Stock No. 176-7267
Mfr. Part No.AT-110V
BrandHirose
SGD68.68
Each
units
- 10dB Straight 50Ω 18GHz - - Gold Beryllium Copper - SMA Male Female
RS Stock No. 296-8093
Mfr. Part No.R412520124
BrandRadiall
SGD75.55
Each
units
TNC Plug to TNC Socket 20dB Straight 50Ω 3GHz - - Gold Brass - TNC Female Male
RS Stock No. 285-9753
Mfr. Part No.R414720000
BrandRadiall
SGD147.52
Each
units
N Plug to N Socket 20dB Straight 50Ω 12.4GHz - - Nickel Beryllium Copper - N Female Male
RS Stock No. 716-5110
Mfr. Part No.6602_SMA-50-2/199_NE
SGD109.72
Each
units
SMA Plug to Socket 2dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 716-5081
Mfr. Part No.6606_SMA-50-2/199_NE
SGD128.43
Each
units
SMA Plug to Socket 6dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 886-0241
Mfr. Part No.6-12FFPB
SGD8.745
Each (In a Pack of 6)
units
F Plug to F Socket - Straight 75Ω - - - - - - F Plug Plug
RS Stock No. 176-7264
Mfr. Part No.AT-130V
BrandHirose
SGD69.04
Each
units
- 30dB Straight 50Ω 18GHz - - Gold Beryllium Copper - SMA Male Female
RS Stock No. 285-9781
Mfr. Part No.R414710161
BrandRadiall
SGD335.23
Each
units
N Plug to N Socket 10dB Straight 50Ω 18GHz - - Gold over Nickel Beryllium Copper - N Female Male
RS Stock No. 285-9731
Mfr. Part No.R414706000
BrandRadiall
SGD137.89
Each
units
N Plug to N Socket 6dB Straight 50Ω 12.4GHz - - Gold over Nickel Beryllium Copper - N Female Male
RS Stock No. 712-2946
Mfr. Part No.J01006A0025
SGD96.87
Each
units
BNC Plug to BNC Socket 20dB - 50Ω 6GHz - - - - - BNC - -
RS Stock No. 712-3002
Mfr. Part No.J01016A0004
SGD137.19
Each
units
TNC Plug to TNC Socket 3dB - 50 Ω, 75 Ω 10GHz - - - - - TNC - -
RS Stock No. 494-824
Mfr. Part No.6810.19.A
SGD189.74
Each
units
SMA Plug to Socket 10dB - 50Ω DC → 18GHz - - - - Yes - - -
RS Stock No. 285-9573
Mfr. Part No.R411803121
BrandRadiall
SGD95.38
Each
units
SMA Plug to Socket 3dB Straight 50Ω 18GHz - - - Stainless Steel - SMA Male Socket
RS Stock No. 716-5132
Mfr. Part No.6830.17.B
SGD262.52
Each
units
N Plug to N Socket 1.5 dB, 30 dB - 50Ω 18GHz - - - - Yes N - -
RS Stock No. 277-9461
Mfr. Part No.4119-50
BrandFluke
SGD82.00
Each
units
BNC Plug to BNC Socket - Straight 50Ω 500MHz - - Gold Beryllium Copper, Brass - BNC Plug Socket
RS Stock No. 712-3018
Mfr. Part No.J01016A0007
SGD93.40
Each
units
TNC Plug to TNC Socket 20dB - 50 Ω, 75 Ω 10GHz - - - - - TNC - -
RS Stock No. 712-3125
Mfr. Part No.J01026A0019
SGD211.54
Each
units
N Plug to N Socket 6dB - 50Ω 10GHz - - - - - N - -