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 Inner Dimensions Outer Height Series Aperture Diameter
RS庫存編號 212-0803
製造零件編號B64290L0040X830
BrandEPCOS
HK$58.07
單位
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庫存編號 167-8385
製造零件編號B64290L0040X830
BrandEPCOS
HK$57.822
個 (以毎盒:50)
單位
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庫存編號 811-9092
製造零件編號ESD-R-47D-B
BrandKEMET
HK$49.59
單位
Toroid Core 51.5 x 25.5 x 17.5mm Consumer Electronics - Nickel Zinc 51.5mm 17.5mm 25.5mm 51.5mm - - - - -
RS庫存編號 169-6786
製造零件編號ESD-R-47D-B
BrandKEMET
HK$38.666
個 (以毎盒:90)
單位
Toroid Core 51.5 x 25.5 x 17.5mm Consumer Electronics - Nickel Zinc 51.5mm 17.5mm 25.5mm 51.5mm - - - - -
RS庫存編號 644-1148
製造零件編號HF70BB3.5X3X1.3
BrandTDK
HK$1.124
/個 (每包:10個)
單位
Bead 3.5 x 1.3 x 3mm Audio Equipment, Automotive, Computer Peripherals, Digital Interface, EMI Absorption, Imaging Devices, Telecom - Nickel Zinc 3.5mm 3mm 1.3mm 3.5mm - - - - -
RS庫存編號 371-7212
製造零件編號HF70RH14.3X28.6X6.35
BrandTDK
HK$10.681
/個 (每包:10個)
單位
Cylindrical Core 14.3 x 6.35 x 28.6mm EMI Suppression - HF70 14.3mm - 6.35mm 14.3mm - - - - -
RS庫存編號 644-1766
製造零件編號HF70T28X13X16
BrandTDK
HK$8.358
/個 (每包:5個)
單位
EMI Suppression Toroid Core 28 x 16 x 13mm Round Cable - HF70 28mm 13mm 16mm 28mm - - - - -
RS庫存編號 811-9102
製造零件編號ESD-R-57
BrandKEMET
HK$162.63
單位
Toroid Core 61 x 32.4 x 24mm Consumer Electronics - Manganese-Zinc - 24mm 32.4mm 61mm - - - - -
RS庫存編號 169-6787
製造零件編號ESD-R-57
BrandKEMET
HK$107.366
個 (以毎盒:60)
單位
Toroid Core 61 x 32.4 x 24mm Consumer Electronics - Manganese-Zinc - 24mm 32.4mm 61mm - - - - -
RS庫存編號 163-4558
製造零件編號74270191
HK$49.42
Each (In a Tray of 15)
單位
Toroid Core 61 x 35.5 x 20mm EMI Suppression - 4 W 620 20mm 20mm 35.5mm 61mm - - - - -
RS庫存編號 124-1849
製造零件編號742701716
HK$8.208
/個 (每包:10個)
單位
EMI Suppression Toroidal Ferrite 12.7 x 7.9 x 6.35mm Coaxial Cable, Multiconductor Wire, Wire-Wrapping Cable, Wires - 7 W 380 - 6.35mm 7.9mm 12.7mm - - - - -
RS庫存編號 788-0226
製造零件編號74270191
HK$48.24
單位
Toroid Core 61 x 35.5 x 20mm EMI Suppression - 4 W 620 20mm 20mm 35.5mm 61mm - - - - -
RS庫存編號 261-8906
製造零件編號TR 13 7 6
BrandRichco
HK$15.96
單位
Toroid Core 13 x 7 x 6.3mm - - Ferrite - 6.3mm 7mm 13mm - - - - -
RS庫存編號 644-1788
製造零件編號HF70T31X13X19
BrandTDK
HK$11.898
/個 (每包:5個)
單位
EMI Suppression Toroid Core 31 x 19 x 13mm Round Cable - HF70 31mm 13mm 19mm 31mm - - - - -
RS庫存編號 167-8277
製造零件編號B64290L0048X830
BrandEPCOS
HK$13.86
個 (以毎盒:100)
單位
Toroid Core 35.5 (Dia.) x 13.6mm General Electronics - N30 35.5mm 13.6mm 19.2mm 35.5mm - - - - -
RS庫存編號 212-0875
製造零件編號B64290L0048X830
BrandEPCOS
HK$16.48
單位
Toroid Core 35.5 (Dia.) x 13.6mm General Electronics - N30 35.5mm 13.6mm 19.2mm 35.5mm - - - - -
RS庫存編號 811-9105
製造零件編號ESD-R-57D-1
BrandKEMET
HK$107.45
單位
Toroid Core 61 x 32.4 x 24mm Consumer Electronics - Nickel Zinc - 24mm 32.4mm 61mm - - - - -
RS庫存編號 212-0976
製造零件編號B64290L0659X830
BrandEPCOS
HK$47.49
單位
Toroid Core 41.8 (Dia.) x 17.2mm - - N30 41.8mm 17.02mm 22.5mm 41.8mm - - - - -
RS庫存編號 124-1850
製造零件編號74270117
HK$5.57
/個 (每包:10個)
單位
EMI Suppression Toroidal Ferrite 14 x 10 x 8mm Coaxial Cable, Multiconductor Wire, Wire-Wrapping Cable, Wires - 3 W 800 - 8mm 10mm 14mm - - - - -
RS庫存編號 167-8290
製造零件編號B64290L0659X830
BrandEPCOS
HK$30.076
個 (以毎盒:80)
單位
Toroid Core 41.8 (Dia.) x 17.2mm - - N30 41.8mm 17.02mm 22.5mm 41.8mm - - - - -