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. 212-0982
Mfr. Part No.B64290L0674X830
BrandEPCOS
MYR17.82
Each
units
Toroid Core 37.5 (Dia.) x 16.2mm General Electronics - N30 37.5mm 16.2mm 23mm 37.5mm - - - - -
RS Stock No. 212-0718
Mfr. Part No.B64290A0084X830
BrandEPCOS
MYR137.36
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. 167-8296
Mfr. Part No.B64290A0084X830
BrandEPCOS
MYR126.695
Each (In a Box of 12)
units
Ferrite Core 102 x 65.8 x 15mm Broadband Transformers, Choke, Mixer, Pulse, Transformer - Copper (Plate), Ferrite (Core) - 16.3mm 63.7mm 104.8mm - - - - -
RS Stock No. 167-8385
Mfr. Part No.B64290L0040X830
BrandEPCOS
MYR29.684
Each (In a Box of 50)
units
Ferrite Core 60.1 x 39.2 x 18.8mm Broadband Transformers, Choke, Mixer, Pulse, Transformer - Ferrite N30 - 18.8mm 39.2mm 60.1mm - - - - -
RS Stock No. 212-0803
Mfr. Part No.B64290L0040X830
BrandEPCOS
MYR47.16
Each
units
Ferrite Core 60.1 x 39.2 x 18.8mm Broadband Transformers, Choke, Mixer, Pulse, Transformer - Ferrite N30 - 18.8mm 39.2mm 60.1mm - - - - -
RS Stock No. 170-1372
Mfr. Part No.B64290L0618X038
BrandEPCOS
MYR4.639
Each (On a Reel of 500)
units
Toroid Core 26.6 x 13.5 x 11mm Automotive Electronics, EMC Components, General Electronics - T38 - 11mm 13.5mm 26.6mm - - - - -
RS Stock No. 125-3317
Mfr. Part No.B64290L0618X038
BrandEPCOS
MYR8.084
Each (In a Pack of 10)
units
Toroid Core 26.6 x 13.5 x 11mm Automotive Electronics, EMC Components, General Electronics - T38 - 11mm 13.5mm 26.6mm - - - - -
RS Stock No. 167-8333
Mfr. Part No.B64290L0082X830
BrandEPCOS
MYR27.846
Each (In a Box of 40)
units
Toroid Core 50 (Dia.) x 30mm General Electronics - N30 51.8mm 30mm 28.5mm 51.8mm - - - - -
RS Stock No. 212-0881
Mfr. Part No.B64290L0082X830
BrandEPCOS
MYR43.12
Each
units
Toroid Core 50 (Dia.) x 20mm General Electronics - N30 51.8mm 20mm 28.5mm 51.8mm - - - - -
RS Stock No. 290-6219
Mfr. Part No.B64290L0022X830
BrandEPCOS
MYR15.37
Each
units
Toroid Core 41.8 x 26.2 x 12.5mm - - Ferrite 41.8mm 12.5mm 26.2mm 41.8mm - - - - -
RS Stock No. 167-8299
Mfr. Part No.B64290L0022X830
BrandEPCOS
MYR10.05
Each (In a Box of 100)
units
Toroid Core 41.8 x 26.2 x 12.5mm - - Ferrite 41.8mm 12.5mm 26.2mm 41.8mm - - - - -
RS Stock No. 212-0875
Mfr. Part No.B64290L0048X830
BrandEPCOS
MYR12.53
Each
units
Toroid Core 35.5 (Dia.) x 13.6mm General Electronics - N30 35.5mm 13.6mm 19.2mm 35.5mm - - - - -
RS Stock No. 167-8277
Mfr. Part No.B64290L0048X830
BrandEPCOS
MYR7.489
Each (In a Box of 100)
units
Toroid Core 35.5 (Dia.) x 13.6mm General Electronics - N30 35.5mm 13.6mm 19.2mm 35.5mm - - - - -
RS Stock No. 212-0948
Mfr. Part No.B64290L0632X035
BrandEPCOS
MYR6.132
Each (In a Pack of 5)
units
Toroid Core 21.2 (Dia.) x 8.1mm General Electronics - T35 - 8.1mm 8.95mm 21.2mm - - - - -
RS Stock No. 167-8376
Mfr. Part No.B64290L0618X035
BrandEPCOS
MYR3.092
Each (In a Box of 500)
units
Ferrite Core 25.3 (Dia.) x 14.8 x 10mm General Electronics - T35 25.3mm 10mm 14.8mm 25.3mm - - - - -
RS Stock No. 212-0910
Mfr. Part No.B64290L0618X035
BrandEPCOS
MYR4.93
Each (In a Pack of 5)
units
Ferrite Core 25.3 (Dia.) x 14.8 x 10mm - - T35 25.3mm 10mm 14.8mm 25.3mm - - - - -
RS Stock No. 167-8377
Mfr. Part No.B64290L0632X035
BrandEPCOS
MYR3.141
Each (In a Box of 1000)
units
Toroid Core 21.2 (Dia.) x 8.1mm General Electronics - T35 - 8.1mm 8.95mm 21.2mm - - - - -
RS Stock No. 212-0926
Mfr. Part No.B64290L0618X830
BrandEPCOS
MYR5.166
Each (In a Pack of 5)
units
Toroid Core 26.6 (Dia.) x 11mm General Electronics - N30 26.8mm 11mm 13.5mm 26.6mm - - - - -
RS Stock No. 167-8290
Mfr. Part No.B64290L0659X830
BrandEPCOS
MYR14.383
Each (In a Box of 80)
units
Toroid Core 41.8 (Dia.) x 17.2mm General Electronics - N30 41.8mm 17.02mm 22.5mm 41.8mm - - - - -
RS Stock No. 170-1363
Mfr. Part No.B64290L0038X087
BrandEPCOS
MYR0.378
Each (On a Reel of 3000)
units
Toroid Core 10.8 x 5.25 x 4.75mm Automotive Electronics, EMC Components, General Electronics - N87 - 4.75mm 5.25mm 10.8mm - - - - -