Ferrite Rings

Ferrite rings are toroidal (doughnut) shaped, or cylindrical shaped pieces of ferrite (a ceramic compound).

What do ferrite rings do?

Ferrite rings help to protect against Electromagnetic Interference) (EMI) and Radio Frequency interference (RFI). They prevent interference moving to a device or from a device

How do ferrite rings work?

Ferrite rings can suppress noise without grounding. Ferrites are able to attract magnetic flux. When a cable is passed through the ring, the magnetic fields created by the cable are concentrated within the ferrite ring. This magnetic energy is converted to heat and the ferrite dissipates this by magnetic loss.

How are ferrite rings used?

Ferrite rings can often be seen with cables threaded through them. They are common place in electronics to help with noise suppression. The cable can also be wrapped about the ferrite ring numerous times. Ferrite rings can be incorporated into broadband transformers, pulse transformers and common mode chokes.

Applications

Digital Audio systems
Computers
Sensitive electrical equipment

237 Products showing for Ferrite Rings

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RS PRO Ferrite Ring Ferrite Core, For: EMI Suppression, 12.7 (Dia.) x 28.5mm RS Stock No.: 239-062 Datasheets: TWD210.80 Each (In a Pack of 6)		Ferrite Core	12.7 (Dia.) x 28.5mm	EMI Suppression	-	Ferrite	28.5mm	28.57mm	13.77mm	28.5mm
Fair-Rite Ferrite Bead Toroid Core, For: Inductive Component, 61 (Dia.) x 12.7mm RS Stock No.: 467-4172 Mfr. Part No.: 5943003801 Datasheets: TWD255.00 Each	Fair-Rite	Toroid Core	61 (Dia.) x 12.7mm	Inductive Component	-	43 Material	61mm	12.7mm	35.55mm	61mm
RS PRO Ferrite Ring Ferrite Core, For: EMI Suppression, 16 x 7 x 29mm RS Stock No.: 239-056 Datasheets: TWD104.20 Each (In a Pack of 6)		Ferrite Core	16 x 7 x 29mm	EMI Suppression	-	Ferrite, Nickel Zinc	-	29mm	7mm	16mm
Fair-Rite Ferrite Ring Toroid Core, For: Broadband Transformers, 9.5(Dia.) x 3.3mm RS Stock No.: 467-4093 Mfr. Part No.: 5943000201 Datasheets: TWD3.60 Each (In a Pack of 25)	Fair-Rite	Toroid Core	9.5(Dia.) x 3.3mm	Broadband Transformers	-	43 Material	9.5mm	3.3mm	4.75mm	9.5mm
EPCOS Ferrite Ring Toroid Core, For: Automotive Electronics, EMC Components, General Electronics, 21.2 x 8.95 x 8.1mm RS Stock No.: 125-3319 Mfr. Part No.: B64290L0632X830 Datasheets: TWD30.60 Each (In a Pack of 10)	EPCOS	Toroid Core	21.2 x 8.95 x 8.1mm	Automotive Electronics, EMC Components, General Electronics	-	N30	-	8.1mm	8.95mm	21.2mm
Wurth Elektronik Ferrite Ring Toroid Core, For: EMI Suppression, 21 x 13 x 12mm RS Stock No.: 788-0181 Mfr. Part No.: 74270120 Datasheets: TWD43.80 Each (In a Bag of 5)	Wurth Elektronik	Toroid Core	21 x 13 x 12mm	EMI Suppression	-	4 W 620	12mm	12mm	13mm	12mm
EPCOS Ferrite Ring Toroid Core, For: General Electronics, 50 (Dia.) x 30mm RS Stock No.: 167-8333 Mfr. Part No.: B64290L0082X830 Datasheets: TWD260.00 Each (In a Box of 40)	EPCOS	Toroid Core	50 (Dia.) x 30mm	General Electronics	-	N30	51.8mm	30mm	28.5mm	51.8mm
Fair-Rite Ferrite Ring Toroid Core, For: Inductive Component, 12.7 (Dia.) x 12.7mm RS Stock No.: 467-4166 Mfr. Part No.: 5943001901 Datasheets: TWD16.20 Each (In a Pack of 10)	Fair-Rite	Toroid Core	12.7 (Dia.) x 12.7mm	Inductive Component	-	43 Material	12.7mm	12.7mm	7.9mm	12.7mm
EPCOS Ferrite Ring Ferrite Core, For: Broadband Transformers, Choke, Mixer, Pulse, Transformer, 60.1 x 39.2 x 18.8mm RS Stock No.: 212-0803 Mfr. Part No.: B64290L0040X830 Datasheets: TWD335.00 Each	EPCOS	Ferrite Core	60.1 x 39.2 x 18.8mm	Broadband Transformers, Choke, Mixer, Pulse, Transformer	-	Ferrite N30	-	18.8mm	39.2mm	60.1mm
Wurth Elektronik Ferrite Ring EMI Suppression Toroidal Ferrite, For: Coaxial Cable, Multiconductor Wire, Wires, RS Stock No.: 124-1850P Mfr. Part No.: 74270117 Datasheets: TWD19.50 Each (Supplied in a Bag)	Wurth Elektronik	EMI Suppression Toroidal Ferrite	14 x 10 x 8mm	Coaxial Cable, Multiconductor Wire, Wires, Wire-Wrapping Cable	-	3 W 800	-	8mm	10mm	14mm
Wurth Elektronik Ferrite Ring Ferrite Core, For: General Electronics, 17.5 x 9.5 x 28.5mm RS Stock No.: 124-1538 Mfr. Part No.: 7427009 Datasheets: TWD40.60 Each (In a Pack of 10)	Wurth Elektronik	Ferrite Core	17.5 x 9.5 x 28.5mm	General Electronics	-	3 W 800	-	28.5mm	9.5mm	17.5mm
Wurth Elektronik Ferrite Ring EMI Suppression Toroidal Ferrite, For: Coaxial Cable, Multiconductor Wire, Wires, RS Stock No.: 124-1849P Mfr. Part No.: 742701716 Datasheets: TWD23.20 Each (Supplied in a Tray)	Wurth Elektronik	EMI Suppression Toroidal Ferrite	12.7 x 7.9 x 6.35mm	Coaxial Cable, Multiconductor Wire, Wires, Wire-Wrapping Cable	-	7 W 380	-	6.35mm	7.9mm	12.7mm
Wurth Elektronik Ferrite Ring EMI Suppression, For: EMI Suppression, 4.1 x 1.6 x 4mm RS Stock No.: 163-3195 Mfr. Part No.: 74270012 Datasheets: TWD15.70 Each (In a Bag of 5000)	Wurth Elektronik	EMI Suppression	4.1 x 1.6 x 4mm	EMI Suppression	-	Ferrite, Nickel Zinc	-	4mm	1.6mm	4.1mm
KEMET Ferrite Ring Ferrite Core, For: Consumer Electronics RS Stock No.: 811-9036 Mfr. Part No.: ESD-R-25D Datasheets: TWD59.80 Each (In a Bag of 5)	KEMET	Ferrite Core	-	Consumer Electronics	-	Ferrite	-	-	-	-
FERROXCUBE Ferrite Ring Ring Core, For: Interference Suppression Coil, Pulse and Wide Band Transformers, 36.25 x 22.75 RS Stock No.: 814-3366 Mfr. Part No.: 433003077971 Datasheets: TWD99.00 Each	FERROXCUBE	Ring Core	36.25 x 22.75 x 10.56mm	Interference Suppression Coil, Pulse and Wide Band Transformers	-	3E12 Material	36.25mm	10.56mm	22.75mm	36.25mm
Wurth Elektronik Ferrite Ring Toroid Core, For: General Electronics, 16.5 x 8 x 13mm RS Stock No.: 124-1545 Mfr. Part No.: 7427010 Datasheets: TWD36.00 Each (In a Pack of 10)	Wurth Elektronik	Toroid Core	16.5 x 8 x 13mm	General Electronics	-	4 W 620	16.5mm	13mm	8mm	16.5mm
Wurth Elektronik Ferrite Ring Toroid Core, For: General Electronics, 31.5 19 (Dia.) x 16mm RS Stock No.: 163-3135 Mfr. Part No.: 74270115 Datasheets: TWD153.40 Each (In a Tray of 40)	Wurth Elektronik	Toroid Core	31.5 19 (Dia.) x 16mm	General Electronics	-	3W800	31.5mm	16mm	19mm	31.5mm
EPCOS Ferrite Ring Ferrite Core, 25.3 (Dia.) x 14.8 x 10mm RS Stock No.: 212-0910 Mfr. Part No.: B64290L0618X035 Datasheets: TWD46.80 Each (In a Pack of 5)	EPCOS	Ferrite Core	25.3 (Dia.) x 14.8 x 10mm	-	-	T35	25.3mm	10mm	14.8mm	25.3mm
EPCOS Ferrite Ring Ferrite Core, For: Broadband Transformers, Choke, Mixer, Pulse, Transformer, 60.1 x 39.2 x 18.8mm RS Stock No.: 212-0803P Mfr. Part No.: B64290L0040X830 Datasheets: TWD335.00 Each (Supplied in a Box)	EPCOS	Ferrite Core	60.1 x 39.2 x 18.8mm	Broadband Transformers, Choke, Mixer, Pulse, Transformer	-	Ferrite N30	-	18.8mm	39.2mm	60.1mm
Wurth Elektronik Ferrite Ring EMI Suppression Toroidal Ferrite, For: Coaxial Cable, Multiconductor Wire, Wires, RS Stock No.: 124-1854 Mfr. Part No.: 742701121 Datasheets: TWD11.70 Each (In a Pack of 20)	Wurth Elektronik	EMI Suppression Toroidal Ferrite	9.5 x 5 x 14.5mm	Coaxial Cable, Multiconductor Wire, Wires, Wire-Wrapping Cable	-	4 W 620	-	14.5mm	5mm	9.5mm