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
PHP9,133.43
Each
units
Coaxial 3dB Straight 50Ω DC-6GHz Nickel - Gold over Nickel Beryllium Copper Yes Coaxial Male Female
RS Stock No. 285-9674
Mfr. Part No.R412703124
BrandRadiall
PHP2,626.58
Each
units
N Plug to N Socket 3dB Straight 50Ω 3GHz - - Gold over Nickel Beryllium Copper, Brass - N Female Male
RS Stock No. 716-5069
Mfr. Part No.6603_SMA-50-1/199_NE
PHP5,029.50
Each
units
SMA Plug to Socket 3dB - 50Ω DC to 18GHz - - - - Yes SMA - -
RS Stock No. 716-5113
Mfr. Part No.6620_SMA-50-2/199_NE
PHP4,103.93
Each
units
SMA Plug to Socket 20dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 716-5123
Mfr. Part No.6830.17.A
PHP8,174.86
Each
units
N Plug to N Socket 1 dB, 30 dB - 50Ω 12.4GHz - - - - Yes N - -
RS Stock No. 494-913
Mfr. Part No.6803.19.A
PHP9,777.58
Each
units
SMA Plug to Socket 3dB - 50Ω DC to 18GHz - - - - Yes SMA - -
RS Stock No. 712-3002
Mfr. Part No.J01016A0004
PHP7,336.05
Each
units
TNC Plug to TNC Socket 3dB - 50 Ω, 75 Ω 10GHz - - - - - TNC - -
RS Stock No. 277-9461
Mfr. Part No.4119-50
BrandFluke
PHP3,163.00
Each
units
BNC Plug to BNC Socket - Straight 50Ω 500MHz - - Gold Beryllium Copper, Brass - BNC Plug Socket
RS Stock No. 716-5110
Mfr. Part No.6602_SMA-50-2/199_NE
PHP4,103.93
Each
units
SMA Plug to Socket 2dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 285-9618
Mfr. Part No.R411820121
BrandRadiall
PHP5,099.71
Each
units
SMA Plug to Socket 20dB Straight 50Ω 18GHz - - - Stainless Steel - SMA Male Socket
RS Stock No. 716-5107
Mfr. Part No.6601_SMA-50-2/199_NE
PHP4,103.93
Each
units
SMA Plug to Socket 1dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 885-8006
Mfr. Part No.27-9300-3
PHP355.63
Each
units
BNC Plug to BNC Socket 3dB Straight 50Ω 0 → 2GHz Nickel - Gold Brass - BNC Plug Socket
RS Stock No. 285-9753
Mfr. Part No.R414720000
BrandRadiall
PHP5,014.80
Each
units
N Plug to N Socket 20dB Straight 50Ω 12.4GHz - - Nickel Beryllium Copper - N Female Male
RS Stock No. 712-2949
Mfr. Part No.J01006A0023
PHP7,489.28
Each
units
BNC Plug to BNC Socket 6dB - 50Ω 6GHz - - - - - BNC - -
RS Stock No. 716-5072
Mfr. Part No.6603_SMA-50-2/199_NE
PHP5,102.82
Each
units
SMA Plug to Socket 3dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 716-5081
Mfr. Part No.6606_SMA-50-2/199_NE
PHP5,102.82
Each
units
SMA Plug to Socket 6dB - 50Ω DC to 6GHz - - - - Yes SMA - -
RS Stock No. 296-8059
Mfr. Part No.R412503124
BrandRadiall
PHP3,031.35
Each
units
TNC Plug to TNC Socket 3dB Straight 50Ω 3GHz - - Gold Brass - TNC Female Male
RS Stock No. 712-3330
Mfr. Part No.J01156A0031
PHP5,651.80
Each
units
SMA Plug to Socket 10dB - 50Ω 10GHz - - - - - SMA - -
RS Stock No. 716-5126
Mfr. Part No.6906.01.A
PHP5,970.26
Each
units
BNC Plug to BNC Socket 0.4 dB, 6 dB - 50Ω DC → 1GHz - - - - Yes BNC - -
RS Stock No. 285-9595
Mfr. Part No.R411806121
BrandRadiall
PHP4,140.19
Each
units
SMA Plug to Socket 0.8 dB, 6 dB - 50Ω DC → 18GHz - - - - - SMA - -
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