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. 195-3891
Mfr. Part No.7427151S
HK$51.26
Each
units
STAR-RING Snap Ferrite Computer Data and Power Cable, Mounting on Circuit Boards 4 W 620 - Yes Yes - 40 x 20 x 30mm 14.5mm - 1 20mm 30mm
RS Stock No. 136-9025
BrandRS PRO
HK$37.42
Each
units
- - - - - - - 175Ω - - - - - -
RS Stock No. 774-0645
Mfr. Part No.ZCAT2132-1130
BrandTDK
HK$24.68
Each
units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 36 Dia x 32 mm 11mm - 1 32mm 22mm
RS Stock No. 109-4165
Mfr. Part No.ZCAT2035-0930A
BrandTDK
HK$9.595
Each (On a Reel of 480)
units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 19.5 Dia. x 35mm 9mm - 1 20.5mm -
RS Stock No. 123-2498
BrandRS PRO
HK$23.795
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. 222-4400
Mfr. Part No.MTFC 201010T
BrandRichco
HK$51.38
Each
units
MTFC Toroid Core Computer Peripherals Ferrite - - Yes 82 23.3 Dia. x 14.7mm 9.8mm - 1 - 14.7mm
RS Stock No. 123-2493
BrandRS PRO
HK$10.63
Each (In a Pack of 2)
units
- Clamp Filter Computer Peripherals, Digital TV, Internal & External Power Cables, Monitors, Printers Ferrite 35 - Yes 75Ω 24.5 Dia. x 28.5mm 10.2mm - 1 28.5mm -
RS Stock No. 811-9121
Mfr. Part No.ESD-SR-250
BrandKEMET
HK$54.14
Each
units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 31.5 x 38 x 31.6mm 13mm - 1 38mm 31.6mm
RS Stock No. 756-8673
Mfr. Part No.74271318
HK$37.12
Each
units
WE-NCF Split Core Computers, Easy To Mount On Already Installed Cables Or Cables With Connecters, Interference Problems On Data Lines, Terminals 4W620 - - Yes 106Ω 19.4 x 16 x 8.2mm 8.2mm - 1 16mm 8.2mm
RS Stock No. 185-7114
Mfr. Part No.74272211
HK$130.472
Each (In a Tray of 20)
units
STAR-TEC Snap Ferrite Especially for Applications in the Low Frequency Range from 300 kHz to 30 Mhz, Perfect for Applications with Varying Cable Diameter, Reusable because of the Key Technology Therefore Perfect for Test and Measuring Purposes and Cables with Difficult Access, Suppression of Electronic Ballasts (i.e. Neon Tube) in the Lighting Industry Manganese-Zinc (Coating) - Yes - - 56 x 47 x 43mm 17 → 21mm - 1 56mm 43mm
RS Stock No. 123-2496
BrandRS PRO
HK$23.795
Each (In a Pack of 2)
units
- Clamp Filter Computer Peripherals, Digital TV, Internal & External Power Cables, Monitors, Printers Ferrite 105 - Yes 170Ω 31.5 x 33 x 30mm 13mm - 1 33mm 30mm
RS Stock No. 736-1920
Mfr. Part No.74272733
HK$45.85
Each
units
STAR-FIX Snap Ferrite EMI Suppression 8W5000 - No Yes - 18.2 x 21.7 x 35.1mm 8mm - 1 35.1mm 18.2mm
RS Stock No. 814-9986
Mfr. Part No.74271112S
HK$35.20
Each
units
- Snap Ferrite General Application, Safety Relevant Application 4W620 - No Yes - 40.5 x 23.7 x 18.2mm - - 1 23.7mm 18.2mm
RS Stock No. 219-2640
Mfr. Part No.0443164251
BrandFair-Rite
HK$15.78
Each
units
- Round Cable Snap-Its EMI Suppression 43 Material, 44 Material - - Yes 275 17.9 x 9.2 x 32.2mm 6.6mm - 1 9.2mm 32.2mm
RS Stock No. 811-9118
Mfr. Part No.ESD-SR-110
BrandKEMET
HK$20.27
Each
units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 14.4 x 28 x 14.2mm 5mm - 1 28mm 14.2mm
RS Stock No. 185-7111
Mfr. Part No.74272221
HK$57.913
Each (In a Tray of 26)
units
STAR-TEC Snap Ferrite Especially for Applications in the Low Frequency Range from 300 kHz to 30 Mhz, Perfect for Applications with Varying Cable Diameter, Reusable because of the Key Technology Therefore Perfect for Test and Measuring Purposes and Cables with Difficult Access, Suppression of Electronic Ballasts (i.e. Neon Tube) in the Lighting Industry Manganese-Zinc (Coating) - Yes - - 41.6 x 33.5 x 28.4mm 8.5 → 10.5mm - 1 41.6mm 28.4mm
RS Stock No. 811-9146
Mfr. Part No.ESD-SR-S25
BrandKEMET
HK$21.62
Each
units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 33 x 15.5 x 29mm 14.5mm - 1 15.5mm 29mm
RS Stock No. 169-6794
Mfr. Part No.ESD-SR-160
BrandKEMET
HK$16.601
Each (In a Box of 400)
units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 20.2 x 39 x 20mm 9mm - 1 39mm 20mm
RS Stock No. 162-0178
Mfr. Part No.B62152A0004X030
BrandEPCOS
HK$3.525
Each (In a Box of 1000)
units
B62152 Double Aperture Core Broadband Transformers N30 - - - - 14.5 x 8.5 x 8.3mm 3.4mm - 2 8.5mm 8.3mm
RS Stock No. 173-0009
Mfr. Part No.0443164151
BrandFair-Rite
HK$51.661
Each (In a Box of 110)
units
- Round Cable Snap-Its EMI Suppression 43 Material, 44 Material - - Yes 250 29 x 14.8 x 32.5mm 13.05mm - 1 14.8mm 32.5mm
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