Ferrite Rings

Ferrite rings are toroidal (doughnut) shaped, or cylindrical shaped pieces of ferrite (a ceramic compound).What do they do?Ferrite rings help to protect against EMI (electromagnetic interference) and RFI (radio frequency interference). They prevent interference moving to a device or from a device.How do they 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 they 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.

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Description Price Type Dimensions Application Impedance Material Diameter Height Inner Diameter Outer Diameter Outer Dimensions Outer Height Series Aperture Diameter Number of Apertures
RS Stock No. 371-7278
Mfr. Part No.HF70RU26X29X13
BrandTDK
$4.04
Each (In a Pack of 10)
units
Ferrite Core 26 x 13 x 29mm Round Cable - HF70 26mm 29mm 13mm 26mm - - - - -
RS Stock No. 170-1369
Mfr. Part No.B64290L0084X087
BrandEPCOS
$42.592
Each (On a Reel of 12)
units
Toroid Core 104.8 x 63.7 x 16.5mm Automotive Electronics, EMC Components, General Electronics - N87 - 16.5mm 63.7mm 104.8mm - - - - -
RS Stock No. 467-4172
Mfr. Part No.5943003801
BrandFair-Rite
$10.50
Each
units
Toroid Core 61 (Dia.) x 12.7mm Inductive Component - 43 Material 61mm 12.7mm 35.55mm 61mm - - - - -
RS Stock No. 788-0143
Mfr. Part No.74270097
$12.41
Each
units
Toroid Core 61 x 35.5 x 12.7mm EMI Suppression - 4 W 620 12.7mm 12.7mm 35.5mm 61mm - - - - -
RS Stock No. 125-3314
Mfr. Part No.B64290L0084X087
BrandEPCOS
$47.60
Each
units
Toroid Core 104.8 x 63.7 x 16.5mm Automotive Electronics, EMC Components, General Electronics - N87 - 16.5mm 63.7mm 104.8mm - - - - -
RS Stock No. 163-4540
Mfr. Part No.74270097
$11.693
Each (In a Tray of 15)
units
Toroid Core 61 x 35.5 x 12.7mm EMI Suppression - 4 W 620 12.7mm 12.7mm 35.5mm 61mm - - - - -
RS Stock No. 167-8290
Mfr. Part No.B64290L0659X830
BrandEPCOS
$6.105
Each (In a Box of 80)
units
Toroid Core 41.8 (Dia.) x 17.2mm General Electronics - N30 41.8mm 17.02mm 22.5mm 41.8mm - - - - -
RS Stock No. 212-0976
Mfr. Part No.B64290L0659X830
BrandEPCOS
$9.33
Each
units
Toroid Core 41.8 (Dia.) x 17.2mm - - N30 41.8mm 17.02mm 22.5mm 41.8mm - - - - -
RS Stock No. 212-0982
Mfr. Part No.B64290L0674X830
BrandEPCOS
$5.79
Each
units
Toroid Core 37.5 (Dia.) x 16.2mm General Electronics - N30 37.5mm 16.2mm 23mm 37.5mm - - - - -
RS Stock No. 467-4239
Mfr. Part No.5961000201
BrandFair-Rite
$0.487
Each (In a Pack of 25)
units
Toroid Core 9.5 (Dia.) x 3.3mm Inductive Component - 61 Material 9.5mm 3.3mm 4.75mm 9.5mm - - - - -
RS Stock No. 167-8299
Mfr. Part No.B64290L0022X830
BrandEPCOS
$3.941
Each (In a Box of 100)
units
Toroid Core 41.8 x 26.2 x 12.5mm - - Ferrite 41.8mm 12.5mm 26.2mm 41.8mm - - - - -
RS Stock No. 371-7363
Mfr. Part No.HF70T14X7X8
BrandTDK
$0.637
Each (In a Pack of 10)
units
EMI Suppression Toroid Core 14 (Dia.) x 7mm Round Cable - HF70 14mm 7mm - - - - - - -
RS Stock No. 124-1532
Mfr. Part No.74270090
$5.93
Each (In a Pack of 10)
units
Axial Ferrite Bead 26 x 13 x 28.5mm Coaxial Cable, Multiconductor Wire, Wire-Wrapping Cable, Wires - 4 W 620 - 28.5mm 13mm 26mm - - - - -
RS Stock No. 163-4557
Mfr. Part No.74270182
$4.16
Each (In a Tray of 126)
units
Toroid Core 18.6 x 10.2 x 10mm EMI Suppression - 4 W 1500 10mm 10mm 10.2mm 18.6mm - - - - -
RS Stock No. 644-1621
Mfr. Part No.HF70T10X5X5
BrandTDK
$0.531
Each (In a Pack of 10)
units
EMI Suppression Toroid Core 10 x 5 x 5mm Round Cable - HF70 10mm 5mm 5mm 10mm - - - - -
RS Stock No. 644-1700
Mfr. Part No.HF70T18X6X10
BrandTDK
$1.201
Each (In a Pack of 10)
units
Toroid Core 18 x 10 x 6mm Audio Equipment, Automotive, Computer Peripherals, Digital Interface, EMI Absorption, Imaging Devices, Telecom - Nickel Zinc 18mm 6mm 10mm 18mm - - - - -
RS Stock No. 290-6219
Mfr. Part No.B64290L0022X830
BrandEPCOS
$7.14
Each
units
Toroid Core 41.8 x 26.2 x 12.5mm - - Ferrite 41.8mm 12.5mm 26.2mm 41.8mm - - - - -
RS Stock No. 788-0222
Mfr. Part No.74270182
$4.58
Each
units
Toroid Core 18.6 x 10.2 x 10mm EMI Suppression - 4 W 1500 10mm 10mm 10.2mm 18.6mm - - - - -
RS Stock No. 124-1541
Mfr. Part No.74270033
$1.12
Each (In a Pack of 20)
units
EMI Suppression Axial Ferrite Bead 9.5 x 4.75 x 9.5mm Coaxial Cable, Multiconductor Wire, Wire-Wrapping Cable, Wires - 3 W 800 - 9.5mm 4.75mm 9.5mm - - - - -
RS Stock No. 161-4583
Mfr. Part No.ESD-R-14A
BrandKEMET
$0.498
Each (In a Box of 6000)
units
Toroid Core 15 x 6.2 x 3.5mm Consumer Electronics - Ferrite - 3.5mm 6.2mm 15mm - - - - -
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Description:
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Description:
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Description:
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For round cables. Used for video, audio, electrical ...
Description:
For round cables. Used for video, audio, electrical components, business equipment, etc. Ideal for intercepting/absorbing generated/infiltrated noise (EMC) and preventing parasitic oscillation.