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 Impedance at 25 MHz Openable Series
RS Stock No. 163-3196
Mfr. Part No.74270054
SGD2.048
Each (In a Tray of 126)
units
EMI Suppression 16 x 9 x 17mm EMI Suppression - Ferrite, Nickel Zinc - 17mm 9mm 16mm - - - - -
RS Stock No. 788-0143
Mfr. Part No.74270097
SGD12.21
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. 123-4230
Mfr. Part No.7427006
SGD1.355
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. 811-8960
Mfr. Part No.ESD-R-12S
BrandKEMET
SGD0.731
Each (In a Bag of 10)
units
Ferrite Core - Consumer Electronics - Ferrite - - - - 12 Dia. x 5.5mm 5.5mm 145Ω No ESD-R Toroidal Cores
RS Stock No. 212-0718
Mfr. Part No.B64290A0084X830
BrandEPCOS
SGD61.23
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. 163-4550
Mfr. Part No.74270151
SGD6.563
Each (In a Tray of 63)
units
Toroid Core 34.6 x 20.8 x 12.7mm EMI Suppression - 4 W 620 12.7mm 12.7mm 20.8mm 34.6mm - - - - -
RS Stock No. 212-0982
Mfr. Part No.B64290L0674X830
BrandEPCOS
SGD6.46
Each
units
Toroid Core 37.5 (Dia.) x 16.2mm General Electronics - N30 37.5mm 16.2mm 23mm 37.5mm - - - - -
RS Stock No. 239-062
BrandRS PRO
SGD8.418
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. 174-1229
Mfr. Part No.TN9/6/3-4C65
BrandFERROXCUBE
SGD1.721
Each (In a Pack of 10)
units
Toroid Core 9.5 x 5.4 x 3.4mm Choke, Current Regulation, Energy Storage, Transformer - Ferrite, 4C65 - 3.4mm 5.4mm 9.5mm - - - - -
RS Stock No. 162-0149
Mfr. Part No.B64290L0618X830
BrandEPCOS
SGD0.95
Each (In a Box of 500)
units
Toroid Core 26.6 (Dia.) x 11mm General Electronics - N30 26.8mm 11mm 13.5mm 26.6mm - - - - -
RS Stock No. 261-9000
Mfr. Part No.RI 18 10 28
BrandRichco
SGD7.07
Each
units
Ferrite Core 17.5 (Dia.) x 28.5mm VE/CD - Ferrite 17.5mm 28.5mm 10mm 17.5mm - - - - -
RS Stock No. 167-5689
Mfr. Part No.FSRH041D85RNB00B
BrandMurata
SGD0.043
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. 788-0197
Mfr. Part No.74270151
SGD7.07
Each
units
Toroid Core 34.6 x 20.8 x 12.7mm EMI Suppression - 4 W 620 12.7mm 12.7mm 20.8mm 34.6mm - - - - -
RS Stock No. 167-8264
Mfr. Part No.B64290L0044X038
BrandEPCOS
SGD0.238
Each (In a Box of 1500)
units
Ferrite Core 13.6 (Dia.) x 5.95mm - - T38 13.6mm 5.95mm 6.5mm 12.5mm - - - - -
RS Stock No. 644-1283
Mfr. Part No.HF70BB9X10X4.5
BrandTDK
SGD0.613
Each (In a Pack of 10)
units
Bead 9 x 4.5 x 10mm Audio Equipment, Automotive, Computer Peripherals, Digital Interface, EMI Absorption, Imaging Devices, Telecom - Nickel Zinc 9mm 10mm 4.5mm 9mm - - - - -
RS Stock No. 172-9989
Mfr. Part No.2631540002
BrandFair-Rite
SGD1.178
Each (In a Box of 376)
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. 212-0869
Mfr. Part No.B64290L0045X830
BrandEPCOS
SGD0.886
Each (In a Pack of 5)
units
Ferrite Core 17.2 (Dia.) x 7.3mm - - N30 17.2mm 7.3mm 9.6mm 16mm - - - - -
RS Stock No. 466-9798
Mfr. Part No.2631540002
BrandFair-Rite
SGD1.668
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. 123-4236
Mfr. Part No.74270071
SGD0.887
Each (In a Pack of 50)
units
EMI Suppression 3.5 x 1.2 x 3mm - - Ferrite, Nickel Zinc - 3mm 1.2mm 3.5mm - - - - -
RS Stock No. 167-8375
Mfr. Part No.B64290L0045X830
BrandEPCOS
SGD0.358
Each (In a Box of 2000)
units
Ferrite Core 17.2 (Dia.) x 7.3mm General Electronics - N30 17.2mm 7.3mm 9.6mm 16mm - - - - -