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. 546-4695
BrandRS PRO
SGD21.00
Each
units
BNC Female, Male Straight Through Hole 50Ω Silver - 0 → 0.5GHz 2W - Brass Gold -
RS Stock No. 546-4134
BrandRS PRO
SGD4.49
Each
units
BNC Male Straight - 75Ω Nickel - 0 → 1GHz 0.5W - Brass Gold -
RS Stock No. 546-4128
BrandRS PRO
SGD5.20
Each
units
BNC Male Straight - 50Ω - - 1GHz 0.5W - Brass Gold -
RS Stock No. 546-4689
BrandRS PRO
SGD4.87
Each
units
BNC Male Straight - 75Ω Silver - 0 → 1GHz 0.5W - Brass Gold -
RS Stock No. 546-4673
BrandRS PRO
SGD4.81
Each
units
BNC Male Straight - 50Ω Silver - 0 → 1GHz 0.5W - Brass Gold -
RS Stock No. 716-5056
Mfr. Part No.65_QLA-01-0-1/122_NE
SGD76.76
Each
units
QLA Male Straight - - Nickel - 0 → 1.4GHz 0.5W - Brass Gold over Nickel -
RS Stock No. 712-3286
Mfr. Part No.J01152B0011
SGD37.03
Each
units
SMA Male Straight - 50Ω Copper Nickel Gold Alloy - 0 → 18GHz 1W - Brass, Lead Alloy Copper, Gold Alloy, Nickel -
RS Stock No. 161-6049
Mfr. Part No.1-1337463-0
SGD7.17
Each (In a Bag of 50)
units
BNC Male Straight - 50Ω - - 0 → 1GHz 0.5W - - - -
RS Stock No. 394-1077
Mfr. Part No.1-1337463-0
SGD8.71
Each
units
BNC Male Straight - 50Ω - - 0 → 1GHz 0.5W - - - -
RS Stock No. 168-0632
Mfr. Part No.1-1337463-0
SGD4.96
Each (In a Box of 1000)
units
BNC Male Straight - 50Ω Silver - 0 → 1GHz 0.5W - Brass (Center Contact) Silver (Center Contact) -
RS Stock No. 846-6691
Mfr. Part No.1-1337463-0
SGD8.71
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
SGD27.65
Each
units
BNC Male Straight Cable Mount 75Ω Gold - 0 → 1GHz - - Brass Gold -
RS Stock No. 164-9077
Mfr. Part No.1-1337470-0
SGD22.39
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
SGD34.66
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
SGD18.44
Each
units
- Male Straight - 50Ω Nickel - 0 → 4GHz - - Brass Gold over Nickel -
RS Stock No. 263-2766
Mfr. Part No.R404240000
BrandRadiall
SGD82.36
Each
units
N Male Straight - 50Ω - - 0 → 12.4GHz 1W - - - -
RS Stock No. 819-4197
Mfr. Part No.32S15R-1,0E3
SGD60.28
Each
units
SMA Male Straight - 50Ω - - 0 → 18GHz 1W - Brass Gold -
RS Stock No. 170-2500
Mfr. Part No.B1004A1-ND3G-75R-0.01-1W
BrandAmphenol
SGD4.89
Each (In a Bag of 100)
units
BNC Male Straight - 75Ω Nickel over Copper - - - - Brass Gold over Nickel -
RS Stock No. 700-9316
Mfr. Part No.B1004A1-ND3G-75R-0.01-1W
BrandAmphenol
SGD7.86
Each
units
BNC Male Straight - 75Ω Nickel over Copper - - - - Brass Gold over Nickel -
RS Stock No. 112-3665
Mfr. Part No.80.5420.017
BrandIMS
SGD11.06
Each
units
- - Right Angle PCB Mount - - - - - - - - -