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. 466-9934
Mfr. Part No.2643022401
BrandFair-Rite
SGD0.104
Each (In a Pack of 50)
units
Bead 5.1 x 1.45 x 6.35mm Suppression Components - 43 Material 5.1mm 6.35mm 1.45mm 5.1mm - - - - -
RS Stock No. 467-2845
Mfr. Part No.2643665802
BrandFair-Rite
SGD1.112
Each (In a Pack of 10)
units
Round Cable Core 17.45 x 9.5 x 12.7mm EMI Suppression - 43 Material 17.45mm 12.7mm 9.5mm 17.45mm - - - - -
RS Stock No. 167-0319
Mfr. Part No.B64290L0038X830
BrandEPCOS
SGD0.13
Each (In a Box of 3000)
units
Ferrite Core 10.8 (Dia.) x 4.75mm - - N30 10.8mm 4.75mm 5.05mm 10.8mm - - - - -
RS Stock No. 136-9023
BrandRS PRO
SGD58.30
Each
units
Ferrite Ring 102 x 65.8 x 16.1mm EMI Suppression - - - - - - - - - - -
RS Stock No. 174-1364
Mfr. Part No.TN14/9/5-3E25
BrandFERROXCUBE
SGD1.412
Each (In a Pack of 10)
units
Toroid Core 14.6 x 8.2 x 5.5mm Choke, Current Regulation, Energy Storage, Transformer - Ferrite - 5.5mm 8.2mm 14.6mm - - - - -
RS Stock No. 163-4549
Mfr. Part No.7427013
SGD2.195
Each (In a Tray of 50)
units
Toroid Core 28 x 16 x 13mm EMI Suppression - 3 W 800 13mm 13mm 16mm 28mm - - - - -
RS Stock No. 170-1369
Mfr. Part No.B64290L0084X087
BrandEPCOS
SGD32.656
Each (On a Reel of 12)
units
Toroid Core 104.8 x 63.7 x 16.5mm Automotive Electronics, EMC Components, General Electronics - N87 - 16.5mm 63.7mm 104.8mm - - - - -
RS Stock No. 169-6771
Mfr. Part No.ESD-R-12E
BrandKEMET
SGD0.369
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. 371-7240
Mfr. Part No.HF70RH26X29X13
BrandTDK
SGD5.178
Each (In a Pack of 10)
units
Cylindrical Core 26 x 13 x 29mm EMI Suppression - HF70 26mm 29mm 13mm 26mm - - - - -
RS Stock No. 171-0802
Mfr. Part No.TX63/38/25-3E12
BrandFERROXCUBE
SGD21.39
Each (On a Reel of 24)
units
Ring Core 63.4 x 37.7 x 25.3mm Interference Suppression Coil, Pulse and Wide Band Transformers - 3E12 Material 63.4mm 25.3mm 37.7mm 63.4mm - - - - -
RS Stock No. 265-1802
Mfr. Part No.RI 26 13 28
BrandRichco
SGD12.82
Each
units
Ferrite Core 26 (Dia.) x 28.5mm VE/CD - Ferrite 26mm 28.5mm 13mm 26mm - - - - -
RS Stock No. 123-4231
Mfr. Part No.7427727
SGD6.14
Each (In a Pack of 2)
units
EMI Suppression 14.2 x 6.35 x 28.5mm - - - - 28.5mm 6.35mm 14.2mm - - - - -
RS Stock No. 644-1441
Mfr. Part No.HF70RH16X15X9
BrandTDK
SGD0.732
Each (In a Pack of 5)
units
EMI Suppression 16 x 9 x 15mm Round Cable - HF70 16mm 15mm 9mm 16mm - - - - -
RS Stock No. 811-9017
Mfr. Part No.ESD-R-19
BrandKEMET
SGD2.016
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. 144-9781
Mfr. Part No.7427009
SGD1.943
Each (In a Tray of 88)
units
Ferrite Core 17.5 x 9.5 x 28.5mm General Electronics - 3 W 800 - 28.5mm 9.5mm 17.5mm - - - - -
RS Stock No. 371-7363
Mfr. Part No.HF70T14X7X8
BrandTDK
SGD0.556
Each (In a Pack of 10)
units
EMI Suppression Toroid Core 14 (Dia.) x 7mm Round Cable - HF70 14mm 7mm - - - - - - -
RS Stock No. 647-9907
Mfr. Part No.B64290L0038X830
BrandEPCOS
SGD0.243
Each (In a Pack of 10)
units
Ferrite Core 10.8 (Dia.) x 4.75mm - - N30 10.8mm 4.75mm 5.05mm 10.8mm - - - - -
RS Stock No. 173-0003
Mfr. Part No.2631102002
BrandFair-Rite
SGD6.488
Each (In a Box of 212)
units
Round Cable Core 25.9 x 12.8 x 28.6mm Suppression Components - 31 Material 25.9mm 28.6mm 12.8mm 25.9mm - - - - -
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. 327-5465
Mfr. Part No.74270104
SGD2.36
Each
units
Toroid Core 31.7 (Dia.) x 8mm General Electronics - 4W620 31.7mm 8mm - 31.7mm - - - - -