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. 212-0803
Mfr. Part No.B64290L0040X830
BrandEPCOS
HK$103.62
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. 167-8385
Mfr. Part No.B64290L0040X830
BrandEPCOS
HK$60.921
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. 167-8277
Mfr. Part No.B64290L0048X830
BrandEPCOS
HK$13.86
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. 167-8290
Mfr. Part No.B64290L0659X830
BrandEPCOS
HK$24.528
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. 212-0976
Mfr. Part No.B64290L0659X830
BrandEPCOS
HK$45.12
Each
units
Toroid Core 41.8 (Dia.) x 17.2mm - - N30 41.8mm 17.02mm 22.5mm 41.8mm - - - - -
RS Stock No. 212-0875
Mfr. Part No.B64290L0048X830
BrandEPCOS
HK$25.69
Each
units
Toroid Core 35.5 (Dia.) x 13.6mm General Electronics - N30 35.5mm 13.6mm 19.2mm 35.5mm - - - - -
RS Stock No. 167-8375
Mfr. Part No.B64290L0045X830
BrandEPCOS
HK$2.027
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 - - - - -
RS Stock No. 212-0910
Mfr. Part No.B64290L0618X035
BrandEPCOS
HK$11.814
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. 167-8376
Mfr. Part No.B64290L0618X035
BrandEPCOS
HK$6.43
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. 212-0869
Mfr. Part No.B64290L0045X830
BrandEPCOS
HK$4.88
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. 125-3315
Mfr. Part No.B64290L0618X027
BrandEPCOS
HK$8.322
Each (In a Pack of 10)
units
Toroid Core 26.6 x 13.5 x 11mm Automotive Electronics, EMC Components, General Electronics - N37 - 11mm 13.5mm 26.6mm - - - - -
RS Stock No. 167-8296
Mfr. Part No.B64290A0084X830
BrandEPCOS
HK$326.216
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. 170-1374
Mfr. Part No.B64290L0632X830
BrandEPCOS
HK$3.388
Each (On a Reel of 1000)
units
Toroid Core 21.2 x 8.95 x 8.1mm Automotive Electronics, EMC Components, General Electronics - N30 - 8.1mm 8.95mm 21.2mm - - - - -
RS Stock No. 212-0774
Mfr. Part No.B64290P0037X830
BrandEPCOS
HK$3.686
Each (In a Pack of 5)
units
Ferrite Core 6.3 (Dia.) x 2.5mm General Electronics - N30 6.3mm 2.5mm - 6.3mm - - - - -
RS Stock No. 170-1375
Mfr. Part No.B64290L0674X038
BrandEPCOS
HK$25.70
Each (On a Reel of 100)
units
Toroid Core 37.5 x 21.7 x 16.2mm Automotive Electronics, EMC Components, General Electronics - T37 - 16.2mm 21.7mm 37.5mm - - - - -
RS Stock No. 170-1369
Mfr. Part No.B64290L0084X087
BrandEPCOS
HK$189.439
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. 170-1377
Mfr. Part No.B64290L0699X087
BrandEPCOS
HK$91.948
Each (On a Reel of 30)
units
Toroid Core 65.3 x 36 x 26.6mm Automotive Electronics, EMC Components, General Electronics - N87 - 26.6mm 36mm 65.3mm - - - - -
RS Stock No. 170-1365
Mfr. Part No.B64290L0045X038
BrandEPCOS
HK$2.975
Each (In a Box of 2000)
units
Toroid Core 17.2 x 8.5 x 7.3mm Automotive Electronics, EMC Components, General Electronics - T38 - 7.3mm 8.5mm 17.2mm - - - - -
RS Stock No. 212-0825
Mfr. Part No.B64290L0044X038
BrandEPCOS
HK$3.674
Each (In a Pack of 5)
units
Ferrite Core 13.6 (Dia.) x 5.95mm - - T38 13.6mm 5.95mm 6.5mm 12.5mm - - - - -
RS Stock No. 170-1367
Mfr. Part No.B64290L0045X087
BrandEPCOS
HK$1.783
Each (On a Reel of 2000)
units
Toroid Core 17.2 x 8.5 x 7.3mm Automotive Electronics, EMC Components, General Electronics - N87 - 7.3mm 8.5mm 17.2mm - - - - -