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. 788-0226
Mfr. Part No.74270191
MYR38.51
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
MYR34.701
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. 124-1549
Mfr. Part No.74270043
MYR5.444
Each (In a Pack of 5)
units
EMI Suppression Axial Ferrite Bead 15.5 x 7.3 x 28.5mm Coaxial Cable, Multiconductor Wire, Wires, Wire-Wrapping Cable - 3 W 800 - 28.5mm 7.3mm 15.5mm - - - - -
RS Stock No. 124-1547
Mfr. Part No.74270113
MYR5.577
Each (In a Pack of 10)
units
EMI Suppression Toroidal Ferrite 11.5 x 5 x 9mm Coaxial Cable, Multiconductor Wire, Wires, Wire-Wrapping Cable - 4 W 620 - 9mm 5mm 11.5mm - - - - -
RS Stock No. 788-0193
Mfr. Part No.7427013
MYR7.49
Each
units
Toroid Core 28 x 16 x 13mm EMI Suppression - 3 W 800 13mm 13mm 16mm 28mm - - - - -
RS Stock No. 163-4549
Mfr. Part No.7427013
MYR5.81
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. 327-5471
Mfr. Part No.74270115
MYR24.58
Each
units
Toroid Core 31.5 19 (Dia.) x 16mm General Electronics - 3W800 31.5mm 16mm 19mm 31.5mm - - - - -
RS Stock No. 163-3135
Mfr. Part No.74270115
MYR23.608
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. 788-0143
Mfr. Part No.74270097
MYR28.79
Each
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. 163-4540
Mfr. Part No.74270097
MYR28.43
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. 260-6739
Mfr. Part No.7427015
MYR20.51
Each
units
Toroid Core 40.6 27.4 (Dia.) x 15mm General Electronics - 4W620 40.6mm 15mm 27.4mm 40.6mm - - - - -
RS Stock No. 788-0197
Mfr. Part No.74270151
MYR17.67
Each
units
Toroid Core 34.6 x 20.8 x 12.7mm EMI Suppression - 4 W 620 12.7mm 12.7mm 20.8mm 34.6mm - - - - -
RS Stock No. 163-3136
Mfr. Part No.7427015
MYR14.93
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. 163-4550
Mfr. Part No.74270151
MYR16.69
Each (In a Tray of 63)
units
Toroid Core 34.6 x 20.8 x 12.7mm EMI Suppression - 4 W 620 12.7mm 12.7mm 20.8mm 34.6mm - - - - -
RS Stock No. 788-0216
Mfr. Part No.74270176
MYR2.37
Each (In a Bag of 5)
units
Toroid Core 10 x 5 x 5mm EMI Suppression - 7 W 850 5mm 5mm 5mm 10mm - - - - -
RS Stock No. 163-4555
Mfr. Part No.74270176
MYR1.51
Each (In a Tray of 500)
units
Toroid Core 10 x 5 x 5mm EMI Suppression - 7 W 850 5mm 5mm 5mm 10mm - - - - -
RS Stock No. 163-4546
Mfr. Part No.74270119
MYR3.26
Each (In a Tray of 184)
units
Toroid Core 22.5 x 13.8 x 6.4mm EMI Suppression - 3 W 800 6.4mm 6.4mm 13.8mm 22.5mm - - - - -
RS Stock No. 124-1542
Mfr. Part No.74270031
MYR2.47
Each (In a Pack of 10)
units
EMI Suppression Axial Ferrite Bead 11.5 x 5 x 20.5mm Coaxial Cable, Multiconductor Wire, Wires, Wire-Wrapping Cable - 4 W 1500 - 20.5mm 5mm 11.5mm - - - - -
RS Stock No. 788-0187
Mfr. Part No.74270119
MYR3.60
Each (In a Bag of 5)
units
Toroid Core 22.5 x 13.8 x 6.4mm EMI Suppression - 3 W 800 6.4mm 6.4mm 13.8mm 22.5mm - - - - -
RS Stock No. 123-4235
Mfr. Part No.74270012
MYR2.62
Each (In a Pack of 50)
units
EMI Suppression 4.1 x 1.6 x 4mm - - Ferrite, Nickel Zinc - 4mm 1.6mm 4.1mm - - - - -