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. 811-8960
Mfr. Part No.ESD-R-12S
BrandKEMET
SGD0.606
Each (In a Bag of 10)
units
Ferrite Core - Consumer Electronics - Ferrite - - - - 12 Dia. x 5.5mm 5.5mm ESD-R Toroidal Cores 7mm 1
RS Stock No. 169-6770
Mfr. Part No.ESD-R-12S
BrandKEMET
SGD0.375
Each (In a Box of 1500)
units
Toroid Core 12 x 7 x 5.5mm Consumer Electronics - Ferrite - 5.5mm 7mm 12mm - - - - -
RS Stock No. 811-9092
Mfr. Part No.ESD-R-47D-B
BrandKEMET
SGD14.42
Each
units
Toroid Core 51.5 x 25.5 x 17.5mm Consumer Electronics - Nickel Zinc 51.5mm 17.5mm 25.5mm 51.5mm - - - - -
RS Stock No. 161-4583
Mfr. Part No.ESD-R-14A
BrandKEMET
SGD0.411
Each (In a Box of 6000)
units
Toroid Core 15 x 6.2 x 3.5mm Consumer Electronics - Ferrite - 3.5mm 6.2mm 15mm - - - - -
RS Stock No. 811-9036
Mfr. Part No.ESD-R-25D
BrandKEMET
SGD2.722
Each (In a Bag of 5)
units
Ferrite Core - Consumer Electronics - Ferrite - - - - 26 Dia. x 15mm 15mm ESD-R Toroidal Cores 14mm 1
RS Stock No. 169-6787
Mfr. Part No.ESD-R-57
BrandKEMET
SGD18.07
Each (In a Box of 60)
units
Toroid Core 61 x 32.4 x 24mm Consumer Electronics - Manganese-Zinc - 24mm 32.4mm 61mm - - - - -
RS Stock No. 811-9102
Mfr. Part No.ESD-R-57
BrandKEMET
SGD23.68
Each
units
Toroid Core 61 x 32.4 x 24mm Consumer Electronics - Manganese-Zinc - 24mm 32.4mm 61mm - - - - -
RS Stock No. 169-6771
Mfr. Part No.ESD-R-12E
BrandKEMET
SGD0.33
Each (In a Box of 1500)
units
Toroid Core 11.8 x 7.3 x 8mm Consumer Electronics - Ferrite - 8mm 7.3mm 11.8mm - - - - -
RS Stock No. 169-6777
Mfr. Part No.ESD-R-19
BrandKEMET
SGD1.01
Each (In a Box of 480)
units
Toroid Core 19 x 9 x 11mm Consumer Electronics - Ferrite - 11mm 9mm 19mm - - - - -
RS Stock No. 169-6775
Mfr. Part No.ESD-R-15C-1
BrandKEMET
SGD0.462
Each (In a Box of 800)
units
Toroid Core 15 x 10.5 x 12mm Consumer Electronics - Ferrite - 12mm 10.5mm 15mm - - - - -
RS Stock No. 811-8979
Mfr. Part No.ESD-R-14A
BrandKEMET
SGD0.758
Each (In a Bag of 10)
units
Ferrite Core - Consumer Electronics - Ferrite - - - - 15 Dia. x 3.5mm 3.5mm ESD-R Toroidal Cores 6.2mm 1
RS Stock No. 811-9017
Mfr. Part No.ESD-R-19
BrandKEMET
SGD1.64
Each (In a Bag of 5)
units
Ferrite Core - Consumer Electronics - Ferrite - - - - 19 Dia. x 11mm 11mm ESD-R Toroidal Cores 9mm 1
RS Stock No. 811-8963
Mfr. Part No.ESD-R-12E
BrandKEMET
SGD0.93
Each (In a Bag of 5)
units
Ferrite Core - Consumer Electronics - Ferrite - - - - 11.8 Dia. x 8mm 8mm ESD-R Toroidal Cores 7.3mm 1
RS Stock No. 169-6779
Mfr. Part No.ESD-R-25D
BrandKEMET
SGD1.43
Each (In a Box of 300)
units
Toroid Core 26 x 14 x 15mm Consumer Electronics - Ferrite - 15mm 14mm 26mm - - - - -
RS Stock No. 811-9014
Mfr. Part No.ESD-R-19D
BrandKEMET
SGD1.756
Each (In a Bag of 5)
units
Toroid Core 19 x 9 x 11mm Consumer Electronics - Nickel Zinc - 11mm 9mm 19mm - - - - -
RS Stock No. 169-6786
Mfr. Part No.ESD-R-47D-B
BrandKEMET
SGD11.74
Each (In a Box of 90)
units
Toroid Core 51.5 x 25.5 x 17.5mm Consumer Electronics - Nickel Zinc 51.5mm 17.5mm 25.5mm 51.5mm - - - - -
RS Stock No. 161-4585
Mfr. Part No.ESD-R-12D
BrandKEMET
SGD1.121
Each (In a Box of 2000)
units
Toroid Core 12.9 x 6 x 6.4mm Consumer Electronics - Ferrite - 6.4mm 6mm 12.9mm - - - - -
RS Stock No. 161-4584
Mfr. Part No.ESD-R-25D-8
BrandKEMET
SGD1.47
Each (In a Box of 600)
units
Toroid Core 25 x 15 x 8mm Consumer Electronics - Ferrite - 8mm 15mm 25mm - - - - -
RS Stock No. 811-8991
Mfr. Part No.ESD-R-15C-1
BrandKEMET
SGD1.112
Each (In a Bag of 5)
units
Ferrite Core - Consumer Electronics - Ferrite - - - - 15 Dia. x 12mm 12mm ESD-R Toroidal Cores 10.5mm 1
RS Stock No. 811-9045
Mfr. Part No.ESD-R-25D-8
BrandKEMET
SGD3.21
Each (In a Bag of 5)
units
Ferrite Core - Consumer Electronics - Ferrite - - - - 25 Dia. x 8mm 8mm ESD-R Toroidal Cores 15mm 1