Ferrite Sleeves

Ferrite sleeves, also known as ferrite beads, are non-conductive components used in electrical circuits to suppress or filter high frequency electromagnetic interference noise. They prevent electromagnetic interference to and from a device. 


How do ferrite sleeves work?

If a device produces radio frequency energy, the conductive cable is used as an antenna to transmit the energy through the device. The ferrite sleeve or bead reduces the output of EMI from the device itself and prevents the cable from acting as an antenna for other sources of EMI, like household appliances. 


Uses for ferrite sleeves


Ferrite sleeves are commonly found on data cables and medical equipment. They may be built in to the equipment or be separate items that can be clamped on to a cable. You may see larger ones on external cables, like on computer monitor cables, while smaller ones can be used internally in electrical circuits, on printed circiut boards (PCBs) for example. Ferrite sleeves are often needed for regulatory compliance. 


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Description Price Series Type Application Material Impedance at 25 MHz Key Openable Impedance at 100 MHz Outer Dimensions Aperture Diameter Impedance at 500 MHz Number of Apertures Outer Depth Outer Height
RS Stock No. 123-2498
BrandRS PRO
£2.175
Each (In a Pack of 2)
Units
- Clamp Filter Computer Peripherals, Digital TV, Internal & External Power Cables, Monitors, Printers Ferrite 80 - Yes 130Ω 30.5 Dia. x 39.5mm 13mm - 1 39.5mm -
RS Stock No. 136-9031
BrandRS PRO
£0.595
Each (In a Pack of 2)
Units
- - - - - - - 75Ω - - - - - -
RS Stock No. 136-8976
BrandRS PRO
£1.285
Each (In a Tray of 120)
Units
- Ferrite Sleeve EMI Suppression Manganese-Zinc 128 - - 268Ω - 13mm - - - 28.5mm
RS Stock No. 136-9024
BrandRS PRO
£0.704
Each (In a Pack of 10)
Units
- EMI Suppression EMI Suppression - 130 - - 213Ω 12 (Dia.) x 30mm 5.3mm - 1 30mm -
RS Stock No. 136-9025
BrandRS PRO
£1.28
Each
Units
- - - - - - - 175Ω - - - - - -
RS Stock No. 136-9027
BrandRS PRO
£0.715
Each (In a Pack of 2)
Units
- - - - - - - 175Ω - - - - - -
RS Stock No. 136-9030
BrandRS PRO
£0.882
Each (In a Pack of 5)
Units
- Ferrite Sleeve Suppress High Frequency Noise - 75Ω - - 140Ω 10.5 Dia. x 20mm 10.5mm - 1 - -
RS Stock No. 124-9621
BrandRS PRO
£2.06
Each (In a Pack of 5)
Units
- - EMI Suppression Nickel Zinc 125Ω - - 270Ω - - - - - -
RS Stock No. 136-9026
BrandRS PRO
£0.33
Each (In a Pack of 5)
Units
- - - - - - - 160Ω - - - - - -
RS Stock No. 136-9029
BrandRS PRO
£0.296
Each (In a Pack of 5)
Units
- - - - - - - 200Ω - - - - - -
RS Stock No. 124-9620
BrandRS PRO
£1.666
Each (In a Pack of 5)
Units
- - EMI Suppression Nickel Zinc 128Ω - - 268Ω - - - - - -
RS Stock No. 136-9028
BrandRS PRO
£1.31
Each
Units
- - - - - - - 268Ω - - - - - -
RS Stock No. 774-0639
Mfr. Part No.ZCAT1730-0730A
BrandTDK
£1.59
Each
Units
ZCAT Ferrite Core USB 30 Material - - Yes - 23 Dia. x 30mm 7mm - 1 16.5mm 17.4mm
RS Stock No. 109-4164
Mfr. Part No.ZCAT1730-0730A
BrandTDK
£0.719
Each (On a Reel of 840)
Units
ZCAT Ferrite Core USB 30 Material - - Yes - 23 Dia. x 30mm 7mm - 1 16.5mm 17.4mm
RS Stock No. 741-3056
Mfr. Part No.ZCAT2235-1030A
BrandTDK
£2.31
Each
Units
ZCAT Bead EMC Absorption 30 Material - - - - 28 Dia. 35mm 10mm - 1 10mm 20mm
RS Stock No. 111-0865
Mfr. Part No.ZCAT2235-1030A
BrandTDK
£1.009
Each (On a Reel of 400)
Units
ZCAT Bead EMC Absorption 30 Material - - - - 28 Dia. 35mm 10mm - 1 10mm 20mm
RS Stock No. 109-4162
Mfr. Part No.ZCAT1325-0530A
BrandTDK
£0.418
Each (On a Reel of 1344)
Units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 20 Dia. x 25mm 5mm - 1 12.8mm 11.2mm
RS Stock No. 774-0632
Mfr. Part No.ZCAT1325-0530A
BrandTDK
£0.95
Each
Units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 20 Dia. x 25mm 5mm - 1 12.8mm 11.2mm
RS Stock No. 466-9164
Mfr. Part No.0431177081
BrandFair-Rite
£13.75
Each
Units
- Round Cable Snap-Its EMI Suppression 31 Material - - Yes 375 56.4 x 27.45 x 42.95mm 25.65mm - 1 27.45mm 42.95mm
RS Stock No. 173-0018
Mfr. Part No.0431177081
BrandFair-Rite
£12.415
Each (In a Box of 36)
Units
- Round Cable Snap-Its EMI Suppression 31 Material - - Yes 375 56.4 x 27.45 x 42.95mm 25.65mm - 1 27.45mm 42.95mm