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. 170-1381
Mfr. Part No.B64290P0037X038
BrandEPCOS
SGD0.314
Each (On a Reel of 4000)
units
Toroid Core 6.5 x 3.63 x 2.67mm Automotive Electronics, EMC Components, General Electronics - T38 - 2.51mm 3.81mm 6.31mm - - - - -
RS Stock No. 467-3163
Mfr. Part No.2673000501
BrandFair-Rite
SGD0.089
Each (In a Pack of 50)
units
Bead 2 x 1.05 x 1.65mm Suppression Components - 73 Material 2mm 1.65mm 1.05mm 2mm - - - - -
RS Stock No. 257-4418
Mfr. Part No.RT165-082-160-K5B
BrandRichco
SGD2.16
Each (In a Pack of 5)
units
Toroid Core 16.5 x 8 x 16mm Multi-Turn Suppression Core - K5B 16.5mm 16mm 8.2mm 16.5mm - - - - -
RS Stock No. 124-1851
Mfr. Part No.7427011
SGD1.817
Each (In a Pack of 10)
units
EMI Suppression Toroidal Ferrite 16.5 x 8 x 16mm Coaxial Cable, Multiconductor Wire, Wire-Wrapping Cable, Wires - 4 W 620 - 16mm 8mm 16.5mm - - - - -
RS Stock No. 482-6654
Mfr. Part No.2643001301
BrandFair-Rite
SGD0.318
Each (In a Pack of 25)
units
Bead 3.55 x 1.65 x 5.95mm Suppression Components - 43 Material 3.55mm 5.95mm 1.65mm 3.55mm - - - - -
RS Stock No. 172-9973
Mfr. Part No.2643375002
BrandFair-Rite
SGD0.382
Each (In a Box of 75)
units
Bead 9.5 x 4.5 x 14.5mm Suppression Components - 43 Material 9.5mm 14.5mm 4.5mm 9.5mm - - - - -
RS Stock No. 644-1609
Mfr. Part No.HF70T10X3X6
BrandTDK
SGD0.249
Each (In a Pack of 10)
units
EMI Suppression Toroid Core 10 x 6 x 3mm Round Cable - HF70 10mm 3mm 6mm 10mm - - - - -
RS Stock No. 124-1549
Mfr. Part No.74270043
SGD1.844
Each (In a Pack of 5)
units
EMI Suppression Axial Ferrite Bead 15.5 x 7.3 x 28.5mm Coaxial Cable, Multiconductor Wire, Wire-Wrapping Cable, Wires - 3 W 800 - 28.5mm 7.3mm 15.5mm - - - - -
RS Stock No. 172-9945
Mfr. Part No.2643001301
BrandFair-Rite
SGD0.069
Each (In a Box of 6000)
units
Bead 3.55 x 1.65 x 5.95mm Suppression Components - 43 Material 3.55mm 5.95mm 1.65mm 3.55mm - - - - -
RS Stock No. 467-2693
Mfr. Part No.2643375002
BrandFair-Rite
SGD0.409
Each (In a Pack of 25)
units
Bead 9.5 x 4.5 x 14.5mm Suppression Components - 43 Material 9.5mm 14.5mm 4.5mm 9.5mm - - - - -
RS Stock No. 644-1306
Mfr. Part No.HF70BB9.5X10.4X4.9
BrandTDK
SGD0.691
Each (In a Pack of 10)
units
Bead 9.5 x 4 x 10.4mm Audio Equipment, Automotive, Computer Peripherals, Digital Interface, EMI Absorption, Imaging Devices, Telecom - Nickel Zinc 9.52mm 10.4mm 4mm 9.5mm - - - - -
RS Stock No. 495-6317
Mfr. Part No.5978008001
BrandFair-Rite
SGD250.13
Each
units
Toroid Core 154.2 (Dia.) x 19.05mm Inductive Component - 78 Material 154.02mm 19.05mm 68.6mm 154.2mm - - - - -
RS Stock No. 169-6770
Mfr. Part No.ESD-R-12S
BrandKEMET
SGD0.418
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. 644-1463
Mfr. Part No.HF70RH16X28X9
BrandTDK
SGD1.664
Each (In a Pack of 5)
units
Cylindrical Core 16 x 9 x 28mm EMI Suppression, Round Cable - HF70 16mm 28mm 9mm 16mm - - - - -
RS Stock No. 167-5689
Mfr. Part No.FSRH041D85RNB00B
BrandMurata
SGD0.041
Each (In a Bag of 10000)
units
Bead 3.6 x 1 x 4.85mm Audio Equipment, Computer Peripherals - RN Material 3.6mm 4.85mm 1mm 3.6mm - - - - -
RS Stock No. 466-9798
Mfr. Part No.2631540002
BrandFair-Rite
SGD1.648
Each (In a Pack of 5)
units
Round Cable Core 14.3 x 6.35 x 28.6mm Suppression Components - 31 Material 14.3mm 28.6mm 6.35mm 14.3mm - - - - -
RS Stock No. 467-2659
Mfr. Part No.2643250402
BrandFair-Rite
SGD0.342
Each (In a Pack of 5)
units
EMI Suppression 6.35 x 2.95 x 12.7mm EMI Suppression - 43 Material 6.35mm 12.7mm 2.95mm 6.35mm - - - - -
RS Stock No. 123-4230
Mfr. Part No.7427006
SGD1.323
Each (In a Pack of 8)
units
EMI Suppression 12 x 8.5 x 15mm - - Ferrite, Nickel Zinc - 15mm 8.5mm 12mm - - - - -
RS Stock No. 123-4237
Mfr. Part No.74270001
SGD0.877
Each (In a Pack of 50)
units
EMI Suppression 2.5 x 0.76 x 4mm - - Ferrite, Nickel Zinc - 4mm 0.76mm 2.5mm - - - - -
RS Stock No. 123-4236
Mfr. Part No.74270071
SGD0.858
Each (In a Pack of 50)
units
EMI Suppression 3.5 x 1.2 x 3mm - - Ferrite, Nickel Zinc - 3mm 1.2mm 3.5mm - - - - -