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. 404-5372
Mfr. Part No.090-0510
BrandYuetsu
$20.77
Each
units
BNC Plug to BNC Socket - Straight Cable Mount 50Ω - - 0 → 600MHz 0.5W - Brass Gold -
RS Stock No. 693-2934
Mfr. Part No.SF8018-6005
BrandAmphenol
$29.11
Each
units
SMA Male Straight - 50Ω - - 0 → 18GHz 1W - Beryllium Copper Gold -
RS Stock No. 773-7497
Mfr. Part No.APH-HDBNCP-T
BrandAmphenol
$34.85
Each
units
BNC Male Straight - 75Ω - - 3GHz 1W - Beryllium Copper Gold -
RS Stock No. 773-7490
Mfr. Part No.APH-HDBNCJ-T
BrandAmphenol
$45.50
Each
units
BNC Female Straight - 75Ω - - 3GHz 1W - Beryllium Copper Gold -
RS Stock No. 125-0324
Mfr. Part No.R404758000
BrandRadiall
$285.22
Each
units
Coaxial Male Straight - 50Ω Nickel - DC-6GHz 30W Yes Beryllium Copper Gold over Nickel -
RS Stock No. 716-5006
Mfr. Part No.6506.17.A
$272.25
Each
units
N Male Straight - 50Ω - - 0 → 12.4GHz 6W - Beryllium Copper Gold -
RS Stock No. 716-4996
Mfr. Part No.65_N-75-0-11/133_NE
$127.68
Each
units
N Male Straight - 75Ω White Bronze - 0 → 1.3GHz 1W - Brass Gold over Nickel -
RS Stock No. 458-8560
Mfr. Part No.J01026A0012
$55.26
Each
units
N Male Straight - 50Ω - - 6GHz 1W - - - -
New
RS Stock No. 184-6533
Mfr. Part No.UM-LR-PC(40)
BrandHirose
$28.38
Each
units
- - - - - - - - - - - - -
RS Stock No. 820-7791
Mfr. Part No.1-5221629-6
$23.02
Each
units
BNC Male Straight - 50Ω - - - 1W - Brass Gold -
New
RS Stock No. 184-6234
Mfr. Part No.UM-LR-PC(40)
BrandHirose
$21.974
Each (In a Bag of 100)
units
- - - - - - - - - - - - -
RS Stock No. 394-1083
Mfr. Part No.1-1337470-0
$29.33
Each
units
BNC Male Straight Cable Mount 75Ω Gold - 0 → 1GHz - - Brass Gold -
RS Stock No. 716-5003
Mfr. Part No.65_BNC-75-0-7/133_NE
$36.99
Each
units
BNC Male Straight - 75Ω White Bronze - 0 → 1GHz 0.4W Yes Brass Gold over Nickel -
RS Stock No. 700-9641
Mfr. Part No.TMN0111T1-3G-14
BrandAmphenol
$2.34
Each
units
- - Straight PCB Mount - Gold RG178 B/U, RG196 A/U - - - - - -
RS Stock No. 134-403
BrandITT Cannon
$16.83
1 Bag of 10
Bag(s)
SMT - Straight Surface Mount - - RG316 - - - - - -
RS Stock No. 164-9077
Mfr. Part No.1-1337470-0
$24.013
Each (In a Box of 50)
units
BNC Male Straight Cable Mount 75Ω Gold - 0 → 1GHz - - Brass Gold -
RS Stock No. 716-4984
Mfr. Part No.65_BNC-50-0-7/133_NE
$26.05
Each
units
BNC Male Straight - 50Ω White Bronze - 0 → 1GHz 1W - Brass Gold over Nickel -
RS Stock No. 716-5034
Mfr. Part No.65_SMB-50-0-31/111_NE
$95.63
Each
units
SMB Female Straight - 50Ω Gold over Nickel - 0 → 4GHz 0.5W - Brass Gold -
RS Stock No. 886-0403
Mfr. Part No.26-8023
$10.12
Each
units
N Male Straight - 50Ω Nickel - 0 → 11GHz - - Brass Nickel -
RS Stock No. 143-9691
Mfr. Part No.132360
BrandAmphenol
$3.934
Each (In a Bag of 500)
units
SMA Male Straight - 50Ω Gold - 0 → 18GHz 2W - Brass Gold -
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