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. 136-8982
BrandRS PRO
€1.881
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
€37.36
Each
units
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RS Stock No. 136-9021
BrandRS PRO
€10.57
Each
units
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RS Stock No. 239-056
BrandRS PRO
€2.222
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. 136-8983
BrandRS PRO
€5.716
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. 136-9022
BrandRS PRO
€8.95
Each
units
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RS Stock No. 136-9032
BrandRS PRO
€1.64
Each
units
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RS Stock No. 136-9033
BrandRS PRO
€1.85
Each
units
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RS Stock No. 136-8985
BrandRS PRO
€21.235
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. 239-062
BrandRS PRO
€4.352
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. 136-8980
BrandRS PRO
€1.665
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
€3.801
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 - - - - -