Ferrite Rings

Ferrite rings are toroidal (doughnut) shaped, or cylindrical shaped pieces of ferrite (a ceramic compound).

What do ferrite rings do?

Ferrite rings help to protect against Electromagnetic Interference) (EMI) and Radio Frequency interference (RFI). They prevent interference moving to a device or from a device

How do ferrite rings 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 ferrite rings 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.

 Applications

  • Digital Audio systems
  • Computers
  • Sensitive electrical equipment

479 Products showing for Ferrite Rings

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In Stock
Wurth Elektronik Ferrite Ring Toroid Core 10 mm, For: EMI Suppression 10 mm ID 10 mm OD
  • RS stock no. 788-0204
  • Mfr. Part No. 742701707
Subtotal (1 bag of 5 units)
R 137,64(exc. VAT)
R 27,528/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 12.7 mm, For: EMI Suppression 35.5 mm ID 61 mm OD
  • RS stock no. 788-0143
  • Mfr. Part No. 74270097
Subtotal (1 unit)
R 157,35(exc. VAT)
R 157,35/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 7.5 mm, For: EMI Suppression 25.4 mm ID 7.5 mm OD
  • RS stock no. 788-0169
  • Mfr. Part No. 742701112
Subtotal (1 unit)
R 36,84(exc. VAT)
R 36,84/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 7.5 mm, For: EMI Suppression 25.4 mm ID 7.5 mm OD
  • RS stock no. 163-4544
  • Mfr. Part No. 742701112
Subtotal (1 tray of 36 units)
R 1 103,004(exc. VAT)
R 30,639/unit
In Stock
Fair-Rite Ferrite Ring Toroid Core 6.35 mm 7.9 mm ID 12.7 mm OD
  • RS stock no. 482-6575
  • Mfr. Part No. 5943001101
Subtotal (1 pack of 5 units)
R 44,55(exc. VAT)
R 8,91/unit
In Stock
Wurth Elektronik Ferrite Ring EMI Suppression Toroidal Ferrite 9 mm, For: EMI Suppression 5 mm ID 11.5 mm OD
  • RS stock no. 124-1547
  • Mfr. Part No. 74270113
Subtotal (1 pack of 10 units)
R 259,01(exc. VAT)
R 25,901/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 16 mm, For: EMI Suppression 12 mm ID 16 mm OD
  • RS stock no. 788-0159
  • Mfr. Part No. 74270110
Subtotal (1 unit)
R 39,41(exc. VAT)
R 39,41/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 12.7 mm, For: EMI Suppression 20.8 mm ID 12.7 mm OD
  • RS stock no. 163-4550
  • Mfr. Part No. 74270151
Subtotal (1 tray of 63 units)
R 5 421,465(exc. VAT)
R 86,055/unit
In Stock
Fair-Rite Ferrite Ring Ferrite Ring 12.7 mm, For: Pulse, Broadband Transformer, Power Input Filter, Common Mode Filter,
  • RS stock no. 255-5223
  • Mfr. Part No. 5967002701
Subtotal (1 unit)
R 159,25(exc. VAT)
R 159,25/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 13 mm, For: EMI Suppression 8 mm ID 16.5 mm OD
  • RS stock no. 124-1545
  • Mfr. Part No. 7427010
Subtotal (1 pack of 10 units)
R 256,13(exc. VAT)
R 25,613/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 8 mm, For: EMI Suppression 5 mm ID 8 mm OD
  • RS stock no. 163-4545
  • Mfr. Part No. 74270112
Subtotal (1 tray of 600 units)
R 4 386,00(exc. VAT)
R 7,31/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 5 mm, For: EMI Suppression 5 mm ID 5 mm OD
  • RS stock no. 788-0216P
  • Mfr. Part No. 74270176
Subtotal 5 units (supplied in a box)
R 60,70(exc. VAT)
R 12,14/unit
In Stock
Wurth Elektronik Ferrite Ring EMI Suppression Axial Ferrite Bead 28.6 mm, For: Wrapping Cable, Coaxial Cable, Wire,
  • RS stock no. 124-1546
  • Mfr. Part No. 7427004
Subtotal (1 pack of 10 units)
R 261,13(exc. VAT)
R 26,113/unit
Last RS stock
Fair-Rite Ferrite Ring Toroid Core 12.7 mm, For: Broadband Transformer 13.7 mm ID 22.1 mm OD
  • RS stock no. 467-4217
  • Mfr. Part No. 5943007601
Subtotal (1 pack of 5 units)
R 182,04(exc. VAT)
R 36,408/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 13 mm, For: EMI Suppression 16 mm ID 13 mm OD
  • RS stock no. 163-4549
  • Mfr. Part No. 7427013
Subtotal (1 tray of 50 units)
R 1 509,20(exc. VAT)
R 30,184/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 10 mm, For: EMI Suppression 10.2 mm ID 10 mm OD
  • RS stock no. 788-0222P
  • Mfr. Part No. 74270182
Subtotal 1 unit (supplied in a tray)
R 55,39(exc. VAT)
R 55,39/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 10 mm, For: EMI Suppression 10.2 mm ID 10 mm OD
  • RS stock no. 788-0222
  • Mfr. Part No. 74270182
Subtotal (1 unit)
R 55,39(exc. VAT)
R 55,39/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 12.7 mm, For: EMI Suppression 10.7 mm ID 12.7 mm OD
  • RS stock no. 788-0229
  • Mfr. Part No. 74270181
Subtotal (1 bag of 5 units)
R 110,09(exc. VAT)
R 22,018/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 12.7 mm, For: EMI Suppression 10.7 mm ID 12.7 mm OD
  • RS stock no. 788-0229P
  • Mfr. Part No. 74270181
Subtotal 5 units (supplied in a box)
R 110,09(exc. VAT)
R 22,018/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 12.7 mm, For: EMI Suppression 20.8 mm ID 12.7 mm OD
  • RS stock no. 788-0197
  • Mfr. Part No. 74270151
Subtotal (1 unit)
R 92,61(exc. VAT)
R 92,61/unit
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