RF Terminators

RF terminators are devices used to electrically terminate coaxial RF (radio frequency) ports. They are usually placed at the end of the transmission line to prevent an RF signal from being reflected.

RF terminators are designed to match the surge impedance (ratio of current and voltage) of the cable to help minimise signal reflections and power losses. Unused tap ports or coaxial faceplates in a home, for example, can create entry and exit paths, which affect performance.

How do RF terminators work?

RF terminators absorb the electrical energy of the signal as it reaches the cable ends and prevents the signal from being reflected so it doesn’t become noise. They ensure that current flows smoothly from one device to another.

What are RF terminators used for?

RF terminators play a critical role in high-frequency systems and circuits, especially when managing high-power signals. They can also be used to close open terminations that might otherwise allow parasitic signals to enter the circuit, such as at a T-junction.

RF terminators are available in many form factors with power ratings to match their sizes.


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Description Price Interface Type Gender Body Orientation Mounting Type Impedance Body Plating Cable Type Operating Frequency Average Power Rating Low Power Contact Material Contact Plating Termination Method
RS Stock No. 716-5056
Mfr. Part No.65_QLA-01-0-1/122_NE
SGD39.78
Each
units
QLA Male Straight - - Nickel - 0 → 1.4GHz 0.5W - Brass Gold over Nickel -
RS Stock No. 712-3286
Mfr. Part No.J01152B0011
SGD25.05
Each
units
SMA Male Straight - 50Ω Copper Nickel Gold Alloy - 0 → 18GHz 1W - Brass, Lead Alloy Copper, Gold Alloy, Nickel -
RS Stock No. 394-1077
Mfr. Part No.1-1337463-0
SGD4.65
Each
units
BNC Male Straight - 50Ω - - 0 → 1GHz 0.5W - - - -
RS Stock No. 168-0632
Mfr. Part No.1-1337463-0
SGD3,900.00
1 Box of 1000
Box(es)
BNC Male Straight - 50Ω Silver - 0 → 1GHz 0.5W - Brass (Center Contact) Silver (Center Contact) -
RS Stock No. 161-6049
Mfr. Part No.1-1337463-0
SGD3.979
Each (In a Bag of 50)
units
BNC Male Straight - 50Ω - - 0 → 1GHz 0.5W - - - -
RS Stock No. 846-6691
Mfr. Part No.1-1337463-0
SGD4.65
Each
units
BNC Male Straight - 50Ω Silver - 0 → 1GHz 0.5W - Brass (Center Contact) Silver (Center Contact) -
RS Stock No. 394-1083
Mfr. Part No.1-1337470-0
SGD13.67
Each
units
BNC Male Straight Cable Mount 75Ω Gold - 0 → 1GHz - - Brass Gold -
RS Stock No. 164-9077
Mfr. Part No.1-1337470-0
SGD12.015
Each (In a Box of 50)
units
BNC Male Straight Cable Mount 75Ω Gold - 0 → 1GHz - - Brass Gold -
RS Stock No. 494-739
Mfr. Part No.65_SMA-50-0-1/111_NE
SGD20.95
Each
units
SMA Male Straight - 50Ω Gold over Nickel - 0 → 18GHz 1W Yes Brass Gold over Nickel -
RS Stock No. 263-2750
Mfr. Part No.R404131000W
BrandRadiall
SGD15.44
Each
units
- Male Straight - 50Ω Nickel - 0 → 4GHz - - Brass Gold over Nickel -
RS Stock No. 546-4695
BrandRS PRO
SGD15.52
Each
units
BNC Female, Male Straight Through Hole 50Ω Silver - 0 → 0.5GHz 2W - Brass Gold -
RS Stock No. 263-2766
Mfr. Part No.R404240000
BrandRadiall
SGD79.95
Each
units
N Male Straight - 50Ω - - 0 → 12.4GHz 1W - - - -
RS Stock No. 170-2500
Mfr. Part No.B1004A1-ND3G-75R-0.01-1W
BrandAmphenol
SGD4.84
Each (In a Bag of 100)
units
BNC Male Straight - 75Ω Nickel over Copper - - - - Brass Gold over Nickel -
RS Stock No. 112-3665
Mfr. Part No.80.5420.017
BrandIMS
SGD8.86
Each
units
- - Right Angle PCB Mount - - - - - - - - -
RS Stock No. 819-4197
Mfr. Part No.32S15R-1,0E3
SGD38.66
Each
units
SMA Male Straight - 50Ω - - 0 → 18GHz 1W - Brass Gold -
RS Stock No. 700-9316
Mfr. Part No.B1004A1-ND3G-75R-0.01-1W
BrandAmphenol
SGD6.39
Each
units
BNC Male Straight - 75Ω Nickel over Copper - - - - Brass Gold over Nickel -
RS Stock No. 494-795
Mfr. Part No.65_N-50-0-1/133_NE
SGD60.34
Each
units
N Male Straight - 50Ω White Bronze - 0 → 4GHz 1W Yes Brass Gold over Nickel -
RS Stock No. 693-2934
Mfr. Part No.SF8018-6005
BrandAmphenol
SGD27.20
Each
units
SMA Male Straight - 50Ω - - 0 → 18GHz 1W - Beryllium Copper Gold -
RS Stock No. 405-146
Mfr. Part No.221629-4
SGD16.40
Each
units
BNC Male Straight Cable Mount 50Ω - - - 1W - Brass Gold -
RS Stock No. 546-4134
BrandRS PRO
SGD3.18
Each
units
BNC Male Straight - 75Ω Nickel - 0 → 1GHz 0.5W - Brass Gold -
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