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.
Ferrite Rings
Filters
| Description | Price | Type | Dimensions | Application | Impedance | Material | Diameter | Height | Inner Diameter | Outer Diameter | Outer Dimensions | Inner Dimensions | Outer Height | Series | Aperture Diameter | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
|
RS Stock No.
163-4558
Mfr. Part No.74270191
BrandWurth Elektronik
|
MYR33.049
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.
788-0226
Mfr. Part No.74270191
BrandWurth Elektronik
|
MYR34.63
Each
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
BrandWurth Elektronik
|
MYR14.176
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.
124-1547
Mfr. Part No.74270113
BrandWurth Elektronik
|
MYR9.887
Each (In a Pack of 10)
units
|
EMI Suppression Toroidal Ferrite | 11.5 x 5 x 9mm | Coaxial Cable, Multiconductor Wire, Wire-Wrapping Cable, Wires | - | 4 W 620 | - | 9mm | 5mm | 11.5mm | - | - | - | - | - |
|
RS Stock No.
163-4549
Mfr. Part No.7427013
BrandWurth Elektronik
|
MYR10.593
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.
163-3135
Mfr. Part No.74270115
BrandWurth Elektronik
|
MYR18.436
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.
327-5471
Mfr. Part No.74270115
BrandWurth Elektronik
|
MYR25.03
Each
units
|
Toroid Core | 31.5 19 (Dia.) x 16mm | General Electronics | - | 3W800 | 31.5mm | 16mm | 19mm | 31.5mm | - | - | - | - | - |
|
|
RS Stock No.
788-0193
Mfr. Part No.7427013
BrandWurth Elektronik
|
MYR8.08
Each
units
|
Toroid Core | 28 x 16 x 13mm | EMI Suppression | - | 3 W 800 | 13mm | 13mm | 16mm | 28mm | - | - | - | - | - |
|
RS Stock No.
788-0143
Mfr. Part No.74270097
BrandWurth Elektronik
|
MYR50.33
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
BrandWurth Elektronik
|
MYR35.752
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.
788-0197
Mfr. Part No.74270151
BrandWurth Elektronik
|
MYR24.36
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
BrandWurth Elektronik
|
MYR28.134
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.
260-6739
Mfr. Part No.7427015
BrandWurth Elektronik
|
MYR19.62
Each
units
|
Toroid Core | 40.6 27.4 (Dia.) x 15mm | General Electronics | - | 4W620 | 40.6mm | 15mm | 27.4mm | 40.6mm | - | - | - | - | - |
|
|
RS Stock No.
163-4550
Mfr. Part No.74270151
BrandWurth Elektronik
|
MYR21.189
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.
788-0187
Mfr. Part No.74270119
BrandWurth Elektronik
|
MYR4.032
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.
163-4546
Mfr. Part No.74270119
BrandWurth Elektronik
|
MYR3.95
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
BrandWurth Elektronik
|
MYR3.956
Each (In a Pack of 10)
units
|
EMI Suppression Axial Ferrite Bead | 11.5 x 5 x 20.5mm | Coaxial Cable, Multiconductor Wire, Wire-Wrapping Cable, Wires | - | 4 W 1500 | - | 20.5mm | 5mm | 11.5mm | - | - | - | - | - |
|
|
RS Stock No.
163-4555
Mfr. Part No.74270176
BrandWurth Elektronik
|
MYR2.537
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.
788-0216
Mfr. Part No.74270176
BrandWurth Elektronik
|
MYR2.554
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.
144-9783
Mfr. Part No.74270033
BrandWurth Elektronik
|
MYR2.636
Each (In a Bag of 500)
units
|
EMI Suppression Axial Ferrite Bead | 9.5 x 4.75 x 9.5mm | Coaxial Cable, Multiconductor Wire, Wire-Wrapping Cable, Wires | - | 3 W 800 | - | 9.5mm | 4.75mm | 9.5mm | - | - | - | - | - |
