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. 124-1549
Mfr. Part No.74270043
€1.23
Each (In a Pack of 5)
units
EMI Suppression Axial Ferrite Bead 15.5 x 7.3 x 28.5mm Coaxial Cable, Multiconductor Wire, Wire-Wrapping Cable, Wires - 3 W 800 - 28.5mm 7.3mm 15.5mm - - - - -
RS Stock No. 163-3133
Mfr. Part No.74270104
€1.185
Each (In a Tray of 63)
units
Toroid Core 31.7 x 19 x 8mm General Electronics - 4W620 31.7mm 8mm - 31.7mm - - - - -
RS Stock No. 327-5465
Mfr. Part No.74270104
€1.39
Each
units
Toroid Core 31.7 (Dia.) x 8mm General Electronics - 4W620 31.7mm 8mm - 31.7mm - - - - -
RS Stock No. 124-1537
Mfr. Part No.7427005
€1.226
Each (In a Pack of 10)
units
Ferrite Core 16 x 9 x 28mm General Electronics - 4 W 620 16mm 28mm 9mm 16mm - - - - -
RS Stock No. 163-3136
Mfr. Part No.7427015
€3.278
Each (In a Bag of 30)
units
Toroid Core 40.6 27.4 (Dia.) x 15mm General Electronics - 4W620 40.6mm 15mm 27.4mm 40.6mm - - - - -
RS Stock No. 788-0226
Mfr. Part No.74270191
€6.29
Each
units
Toroid Core 61 x 35.5 x 20mm EMI Suppression - 4 W 620 20mm 20mm 35.5mm 61mm - - - - -
RS Stock No. 163-4558
Mfr. Part No.74270191
€5.099
Each (In a Tray of 15)
units
Toroid Core 61 x 35.5 x 20mm EMI Suppression - 4 W 620 20mm 20mm 35.5mm 61mm - - - - -
RS Stock No. 788-0169
Mfr. Part No.742701112
€1.71
Each
units
Toroid Core 35.6 x 25.4 x 7.5mm EMI Suppression - 3 W 800 7.5mm 7.5mm 25.4mm 35.6mm - - - - -
RS Stock No. 260-6739
Mfr. Part No.7427015
€3.85
Each
units
Toroid Core 40.6 27.4 (Dia.) x 15mm General Electronics - 4W620 40.6mm 15mm 27.4mm 40.6mm - - - - -
RS Stock No. 163-4544
Mfr. Part No.742701112
€1.429
Each (In a Tray of 36)
units
Toroid Core 35.6 x 25.4 x 7.5mm EMI Suppression - 3 W 800 7.5mm 7.5mm 25.4mm 35.6mm - - - - -
RS Stock No. 124-1536
Mfr. Part No.74270052
€2.298
Each (In a Pack of 5)
units
Axial Ferrite Bead 16 x 8 x 16mm Coaxial Cable, Multiconductor Wire, Wire-Wrapping Cable, Wires - 3 W 800 - 16mm 8mm 16mm - - - - -
RS Stock No. 124-1552
Mfr. Part No.7427014
€3.754
Each (In a Pack of 5)
units
EMI Suppression Toroidal Ferrite 28 x 16 x 20mm Coaxial Cable, Multiconductor Wire, Wire-Wrapping Cable, Wires - 3 W 800 - 20mm 16mm 28mm - - - - -
RS Stock No. 163-4551
Mfr. Part No.74270161
€1.153
Each (In a Bag of 1000)
units
Toroid Core 10 x 5 x 3.7mm EMI Suppression - 3 W 800 3.7mm 3.7mm 5mm 10mm - - - - -
RS Stock No. 788-0162
Mfr. Part No.742701110
€2.77
Each
units
Toroid Core 28 x 18 x 7.5mm EMI Suppression - 3 W 800 7.5mm 7.5mm 18mm 28mm - - - - -
RS Stock No. 163-3197
Mfr. Part No.7427006
€0.609
Each (In a Tray of 128)
units
EMI Suppression 12 x 8.5 x 15mm EMI Suppression - Ferrite, Nickel Zinc - 15mm 8.5mm 12mm - - - - -
RS Stock No. 124-1533
Mfr. Part No.74270095
€4.17
Each (In a Pack of 2)
units
EMI Suppression Axial Ferrite Bead 28 x 18 x 28.5mm Coaxial Cable, Multiconductor Wire, Wire-Wrapping Cable, Wires - 4 W 1500 - 28.5mm 18mm 28mm - - - - -
RS Stock No. 163-4540
Mfr. Part No.74270097
€6.06
Each (In a Tray of 15)
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. 163-3135
Mfr. Part No.74270115
€4.788
Each (In a Tray of 40)
units
Toroid Core 31.5 19 (Dia.) x 16mm General Electronics - 3W800 31.5mm 16mm 19mm 31.5mm - - - - -
RS Stock No. 163-4552
Mfr. Part No.742701703
€1.418
Each (In a Tray of 130)
units
Toroid Core 25 x 15 x 12mm EMI Suppression - 7 W 380 12mm 12mm 15mm 25mm - - - - -
RS Stock No. 124-1546
Mfr. Part No.7427004
€1.649
Each (In a Pack of 10)
units
EMI Suppression Axial Ferrite Bead 14.1 x 6.3 x 28.6mm Coaxial Cable, Multiconductor Wire, Wire-Wrapping Cable, Wires - 4 W 620 - 28.6mm 6.3mm 14.1mm - - - - -