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 Inner Dimensions Outer Height Series Aperture Diameter
RS Stock No. 239-062
BrandRS PRO
MYR22.455
Each (In a Pack of 6)
units
Ferrite Core 12.7 (Dia.) x 28.5mm EMI Suppression - Ferrite 28.5mm 28.57mm 13.77mm 28.5mm - - - - -
RS Stock No. 239-056
BrandRS PRO
MYR7.033
Each (In a Pack of 6)
units
Ferrite Core 15.64 x 6.99 x 28.57mm EMI Suppression - Ferrite, Nickel Zinc - 28.57mm 6.99mm 15.64mm - - - - -
RS Stock No. 136-9033
BrandRS PRO
MYR28.87
Each
units
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RS Stock No. 136-9022
BrandRS PRO
MYR53.23
Each
units
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RS Stock No. 136-8985
BrandRS PRO
MYR122.568
Each (In a Tray of 8)
units
Ferrite Ring 102 x 65.8 x 16.1mm - - K 4000 16.1mm 16.1mm 65.8mm 102mm - - - - -
RS Stock No. 136-8980
BrandRS PRO
MYR13.994
Each (In a Tray of 140)
units
Ferrite Ring 36 x 23 x 16mm - - K 4000 16mm 16mm 23mm 36mm - - - - -
RS Stock No. 136-8984
BrandRS PRO
MYR29.343
Each (In a Tray of 90)
units
Ferrite Ring 58.3 x 40.8 x 18.6mm - - K 4000 18.6mm 18.6mm 40.8mm 58.3mm - - - - -
RS Stock No. 136-8982
BrandRS PRO
MYR15.913
Each (In a Tray of 112)
units
Ferrite Ring 40 x 24 x 17.1mm - - K 4000 17.1mm 17.1mm 24mm 40mm - - - - -
RS Stock No. 136-9023
BrandRS PRO
MYR222.08
Each
units
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RS Stock No. 136-9021
BrandRS PRO
MYR62.82
Each
units
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RS Stock No. 136-8983
BrandRS PRO
MYR34.646
Each (In a Tray of 90)
units
Ferrite Ring 50 x 30 x 21.1mm - - K 4000 21.1mm 21.1mm 30mm 50mm - - - - -
RS Stock No. 136-9032
BrandRS PRO
MYR25.35
Each
units
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RS Stock No. 212-0982
Mfr. Part No.B64290L0674X830
BrandEPCOS
MYR13.42
Each
units
Toroid Core 37.5 (Dia.) x 16.2mm General Electronics - N30 37.5mm 16.2mm 23mm 37.5mm - - - - -
RS Stock No. 167-8285
Mfr. Part No.B64290L0674X830
BrandEPCOS
MYR8.92
Each (In a Box of 100)
units
Toroid Core 37.5 (Dia.) x 16.2mm General Electronics - N30 37.5mm 16.2mm 23mm 37.5mm - - - - -
RS Stock No. 212-0718
Mfr. Part No.B64290A0084X830
BrandEPCOS
MYR68.43
Each
units
Ferrite Core 104.8 x 63.7 x 16.3mm Broadband Transformers, Choke, Mixer, Pulse, Transformer - Copper (Plate), Ferrite (Core) - 16.3mm 63.7mm 104.8mm - - - - -
RS Stock No. 167-8296
Mfr. Part No.B64290A0084X830
BrandEPCOS
MYR66.38
Each (In a Box of 12)
units
Ferrite Core 104.8 x 63.7 x 16.3mm Broadband Transformers, Choke, Mixer, Pulse, Transformer - Copper (Plate), Ferrite (Core) - 16.3mm 63.7mm 104.8mm - - - - -
RS Stock No. 212-0803
Mfr. Part No.B64290L0040X830
BrandEPCOS
MYR44.01
Each
units
Ferrite Core 60.1 x 39.2 x 18.8mm Broadband Transformers, Choke, Mixer, Pulse, Transformer - Ferrite N30 - 18.8mm 39.2mm 60.1mm - - - - -
RS Stock No. 167-8385
Mfr. Part No.B64290L0040X830
BrandEPCOS
MYR27.69
Each (In a Box of 50)
units
Ferrite Core 60.1 x 39.2 x 18.8mm Broadband Transformers, Choke, Mixer, Pulse, Transformer - Ferrite N30 - 18.8mm 39.2mm 60.1mm - - - - -
RS Stock No. 170-1372
Mfr. Part No.B64290L0618X038
BrandEPCOS
MYR3.981
Each (On a Reel of 500)
units
Toroid Core 26.6 x 13.5 x 11mm Automotive Electronics, EMC Components, General Electronics - T38 - 11mm 13.5mm 26.6mm - - - - -
RS Stock No. 467-4172
Mfr. Part No.5943003801
BrandFair-Rite
MYR35.33
Each
units
Toroid Core 61 (Dia.) x 12.7mm Inductive Component - 43 Material 61mm 12.7mm 35.55mm 61mm - - - - -
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