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. 494-795
Mfr. Part No.65_N-50-0-1/133_NE
$78.81
Each
units
N Male Straight - 50Ω White Bronze - 0 → 4GHz 1W Yes Brass Gold over Nickel -
RS Stock No. 125-0324
Mfr. Part No.R404758000
BrandRadiall
$264.62
Each
units
Coaxial Male Straight - 50Ω Nickel - DC-6GHz 30W Yes Beryllium Copper Gold over Nickel -
RS Stock No. 712-2936
Mfr. Part No.J01006A0021
$66.86
Each
units
BNC Female Straight - 50Ω - - 0 → 4GHz 1W - - - -
RS Stock No. 700-9316
Mfr. Part No.B1004A1-ND3G-75R-0.01-1W
BrandAmphenol
$3.38
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
$11.82
Each
units
- - Right Angle PCB Mount - - - - - - - - -
RS Stock No. 131-202
Mfr. Part No.996073
BrandDomocare
$10.64
Each
units
BNC Male Straight - 75Ω - - - 1W - Brass Gold -
RS Stock No. 712-3282
Mfr. Part No.J01152A0011
$29.63
Each
units
SMA Male Straight - 50Ω Copper Nickel Gold Alloy - 0 → 6GHz 1W - Brass Copper, Gold Alloy, Nickel -
RS Stock No. 164-0780
Mfr. Part No.226176-4
$2.63
Each (In a Box of 500)
units
- - - PCB Mount - - RG174, RG316 - - - Brass - -
RS Stock No. 716-5012
Mfr. Part No.6550.17.AA
$369.68
Each
units
N Male Straight - 50Ω Anodized - 0 → 5GHz 25W - Brass Gold -
RS Stock No. 170-2500
Mfr. Part No.B1004A1-ND3G-75R-0.01-1W
BrandAmphenol
$3.925
Each (In a Bag of 100)
units
BNC Male Straight - 75Ω Nickel over Copper - - - - Brass Gold over Nickel -
RS Stock No. 700-9641
Mfr. Part No.TMN0111T1-3G-14
BrandAmphenol
$2.13
Each
units
- - Straight PCB Mount - Gold RG178 B/U, RG196 A/U - - - - - -
RS Stock No. 112-3148
Mfr. Part No.J01006A1268
$9.72
Each
units
BNC Male Straight - 50Ω - - - 0.5W - - - -
RS Stock No. 143-9691
Mfr. Part No.132360
BrandAmphenol
$3.541
Each (In a Bag of 500)
units
SMA Male Straight - 50Ω Gold - 0 → 18GHz 2W - Brass Gold -
RS Stock No. 712-3113
Mfr. Part No.J01026A0011
$217.43
Each
units
N Male Straight - 50Ω Copper Nickel Alloy, White Bronze - 0 → 18GHz 10W - Copper, Lead, Nickel Alloy Copper, Silver Alloy -
RS Stock No. 112-3154
Mfr. Part No.J01006A1269
$8.99
Each
units
BNC Male Straight - 75Ω - - - 0.5W - - - -
RS Stock No. 700-9647
Mfr. Part No.TMN0111B2-3G-05
BrandAmphenol
$4.09
Each
units
- - Straight PCB Mount - Gold over Nickel RG174/U, RG188 A/U, RG316/U - - - Copper Gold over Nickel Solder
RS Stock No. 404-5580
Mfr. Part No.090-0210
BrandYuetsu
$37.72
Each
units
- Male Straight - 50Ω - - 0 → 4GHz 1W - Brass Gold -
RS Stock No. 112-3671
Mfr. Part No.80.5420.027
BrandIMS
$9.61
Each
units
- - Right Angle PCB Mount - - - - - - - - -
RS Stock No. 819-4358
Mfr. Part No.51S1RR-001N4
$31.54
Each
units
BNC Male Straight Panel Mount 50Ω - - 0 → 2GHz 1W - Copper Zinc Alloy Nickel/Silver/White Bronze -
RS Stock No. 738-7521
Mfr. Part No.H01000A0131
$9.44
Each
units
Cable Female, Male Straight PCB Mount - - RG405/U, UT85 0 → 4GHz - - Brass Gold -
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