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. 371-7278
Mfr. Part No.HF70RU26X29X13
BrandTDK
$3.972
Each (In a Pack of 10)
units
Ferrite Core 26 x 13 x 29mm Round Cable - HF70 26mm 29mm 13mm 26mm - - - - -
RS Stock No. 644-1621
Mfr. Part No.HF70T10X5X5
BrandTDK
$0.542
Each (In a Pack of 10)
units
EMI Suppression Toroid Core 10 x 5 x 5mm Round Cable - HF70 10mm 5mm 5mm 10mm - - - - -
RS Stock No. 644-1700
Mfr. Part No.HF70T18X6X10
BrandTDK
$1.181
Each (In a Pack of 10)
units
Toroid Core 18 x 10 x 6mm Audio Equipment, Automotive, Computer Peripherals, Digital Interface, EMI Absorption, Imaging Devices, Telecom - Nickel Zinc 18mm 6mm 10mm 18mm - - - - -
RS Stock No. 371-7363
Mfr. Part No.HF70T14X7X8
BrandTDK
$0.621
Each (In a Pack of 10)
units
EMI Suppression Toroid Core 14 (Dia.) x 7mm Round Cable - HF70 14mm 7mm - - - - - - -
RS Stock No. 371-7256
Mfr. Part No.HF70RU12X15X7.3
BrandTDK
$1.67
Each (In a Pack of 10)
units
Ferrite Core 12 x 7.3 x 15mm Round Cable - HF70 12mm 15mm 7.3mm 12mm - - - - -
RS Stock No. 644-1463
Mfr. Part No.HF70RH16X28X9
BrandTDK
$2.80
Each (In a Pack of 5)
units
Cylindrical Core 16 x 9 x 28mm EMI Suppression, Round Cable - HF70 16mm 28mm 9mm 16mm - - - - -
RS Stock No. 644-1586
Mfr. Part No.HF70T8X4X4
BrandTDK
$0.309
Each (In a Pack of 10)
units
EMI Suppression Toroid Core 8 x 4 x 4mm Round Cable - HF70 8mm 4mm 4mm 8mm - - - - -
RS Stock No. 644-1148
Mfr. Part No.HF70BB3.5X3X1.3
BrandTDK
$0.232
Each (In a Pack of 10)
units
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 Stock No. 371-7240
Mfr. Part No.HF70RH26X29X13
BrandTDK
$5.957
Each (In a Pack of 10)
units
Cylindrical Core 26 x 13 x 29mm EMI Suppression - HF70 26mm 29mm 13mm 26mm - - - - -
RS Stock No. 644-1788
Mfr. Part No.HF70T31X13X19
BrandTDK
$3.136
Each (In a Pack of 5)
units
EMI Suppression Toroid Core 31 x 19 x 13mm Round Cable - HF70 31mm 13mm 19mm 31mm - - - - -
RS Stock No. 644-1160
Mfr. Part No.HF70BB3.5X5X0.8
BrandTDK
$0.232
Each (In a Pack of 10)
units
Bead 3.5 x 0.8 x 5mm Audio Equipment, Automotive, Computer Peripherals, Digital Interface, EMI Absorption, Imaging Devices, Telecom - Nickel Zinc 3.5mm 5mm 0.8mm 3.5mm - - - - -
RS Stock No. 644-1205
Mfr. Part No.HF70BB3.5X10X1.3
BrandTDK
$0.232
Each (In a Pack of 10)
units
Bead 3.5 x 1.3 x 10mm Audio Equipment, Automotive, Computer Peripherals, Digital Interface, EMI Absorption, Imaging Devices, Telecom - Nickel Zinc 3.5mm 10mm 1.3mm 3.5mm - - - - -
RS Stock No. 644-1249
Mfr. Part No.HF70BB5X5X2
BrandTDK
$0.244
Each (In a Pack of 10)
units
Bead 5 x 2 x 5mm Audio Equipment, Automotive, Computer Peripherals, Digital Interface, EMI Absorption, Imaging Devices, Telecom - Nickel Zinc 5mm 5mm 2mm 5mm - - - - -
RS Stock No. 371-7228
Mfr. Part No.HF70RH16X17X9
BrandTDK
$2.115
Each (In a Pack of 10)
units
Round Cable Core 16 x 9 x 17mm Round Cable - HF70 16mm 17mm 9mm 16mm - - - - -
RS Stock No. 644-1609
Mfr. Part No.HF70T10X3X6
BrandTDK
$0.294
Each (In a Pack of 10)
units
EMI Suppression Toroid Core 10 x 6 x 3mm Round Cable - HF70 10mm 3mm 6mm 10mm - - - - -
RS Stock No. 644-1665
Mfr. Part No.HF70T16X8X12
BrandTDK
$0.584
Each (In a Pack of 10)
units
EMI Suppression Toroid Core 16 x 12 x 8mm Round Cable - HF70 16mm 8mm 12mm 16mm - - - - -
RS Stock No. 644-1441
Mfr. Part No.HF70RH16X15X9
BrandTDK
$0.834
Each (In a Pack of 5)
units
EMI Suppression 16 x 9 x 15mm Round Cable - HF70 16mm 15mm 9mm 16mm - - - - -
RS Stock No. 371-7290
Mfr. Part No.HF70SH13X0.7X12
BrandTDK
$1.086
Each (In a Pack of 10)
units
EMI Suppression 17 x 12 x 2.75mm Flat Cable - HF70 17mm 2.75mm 12mm 17mm - - - - -
RS Stock No. 644-1227
Mfr. Part No.HF70BB4.5X5X1.6
BrandTDK
$0.244
Each (In a Pack of 10)
units
Bead 4.5 x 1.6 x 5mm Audio Equipment, Automotive, Computer Peripherals, Digital Interface, EMI Absorption, Imaging Devices, Telecom - Nickel Zinc 4.5mm 5mm 1.6mm 4.5mm - - - - -
RS Stock No. 371-7385
Mfr. Part No.HF70T25X13X15
BrandTDK
$2.68
Each (In a Pack of 10)
units
EMI Suppression Toroid Core 25 (Dia.) x 13mm Round Cable - HF70 25mm 13mm 15mm 25mm - - - - -