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. 814-3436
Mfr. Part No.432703021221
BrandFERROXCUBE
HK$6.574
Each (In a Bag of 5)
units
- Cable Shield EMI Suppression 4S2 Material - - - - 14.3 Dia. x 28.6mm 7.25mm - 1 - 28.6mm
RS Stock No. 916-4324
Mfr. Part No.ZCAT2235-1030A-BK
BrandTDK
HK$23.98
Each (In a Pack of 2)
units
ZCAT Clamp Filter Audio Equipment, Copiers, Digital Telephones, Electronic Musical Instruments, Facsimiles, HDDs, Monitors, PCs, Video Games, Word Processors - - - Yes 50Ω 21.5 Dia. x 35mm 10mm - 1 - 35mm
RS Stock No. 466-9215
Mfr. Part No.0444164951
BrandFair-Rite
HK$13.31
Each
units
- Round Cable Snap-Its EMI Suppression 43 Material, 44 Material - - Yes - 17.3 x 8.4 x 36.2mm 5.1mm - 1 8.4mm 36.2mm
RS Stock No. 163-3526
Mfr. Part No.74272722
HK$91.78
Each (In a Tray of 20)
units
STAR-FIX Snap Ferrite EMI Suppression 8W5000 - No Yes - 28 x 31 x 35.1mm 12.5mm - 1 35.1mm 28mm
RS Stock No. 170-3332
Mfr. Part No.ZCAT2436-1330A-BK
BrandTDK
HK$17.11
Each (In a Box of 400)
units
ZCAT Clamp Filter Audio Equipment, Copiers, Digital Telephones, Electronic Musical Instruments, Facsimiles, HDDs, Monitors, PCs, Video Games, Word Processors - - - Yes 30Ω 23.5 Dia. x 36mm 13mm - 1 - 36mm
RS Stock No. 482-6610
Mfr. Part No.2861001502
BrandFair-Rite
HK$2.998
Each (In a Pack of 5)
units
- Multi Aperture Core Suppression Components - - - - - - 3.8mm - 2 - -
RS Stock No. 916-4333
Mfr. Part No.ZCAT2436-1330A-BK
BrandTDK
HK$12.66
Each (In a Pack of 2)
units
ZCAT Clamp Filter Audio Equipment, Copiers, Digital Telephones, Electronic Musical Instruments, Facsimiles, HDDs, Monitors, PCs, Video Games, Word Processors - - - Yes 30Ω 23.5 Dia. x 36mm 13mm - 1 - 36mm
RS Stock No. 814-9998
Mfr. Part No.74271111
HK$35.20
Each
units
STAR-TEC Snap Ferrite General Application, Safety Relevant Application 4W620 - No Yes 320 40.5 x 23.7 x 18.2mm - - 1 23.7mm 18.2mm
RS Stock No. 172-9997
Mfr. Part No.0443164251
BrandFair-Rite
HK$23.445
Each (In a Box of 196)
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. 466-9120
Mfr. Part No.0431167281
BrandFair-Rite
HK$21.86
Each
units
- Round Cable Snap-Its EMI Suppression 31 Material - - Yes 240 23.7 x 11.7 x 39.4mm 10.15mm - 1 11.7mm 39.4mm
RS Stock No. 814-3394
Mfr. Part No.432703021201
BrandFERROXCUBE
HK$7.528
Each (In a Bag of 5)
units
- Cable Shield EMI Suppression 4S2 Material - - - - 14.3 Dia. x 28.6mm 6.35mm - 1 - 28.6mm
RS Stock No. 173-0018
Mfr. Part No.0431177081
BrandFair-Rite
HK$256.753
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
RS Stock No. 169-6796
Mfr. Part No.ESD-SR-250H
BrandKEMET
HK$59.936
Each (In a Box of 60)
units
ESD-SR Snap-on Cores Snap Ferrite Round Cable Nickel Zinc - - Yes - 30 x 42 x 30mm 13mm - 1 42mm 30mm
RS Stock No. 756-8389
Mfr. Part No.7427153
HK$38.12
Each
units
STAR-RING Split Core For Mounting On Circuit Boards Midget Blind Rivet, Internal and External Computer Data and Power Cable, Perfect For Cables With Difficult Access Because Of Easy Installation and Removal 4W620 - No Yes 165Ω 30 x 20 x 20mm 8mm - 1 20mm 20mm
RS Stock No. 136-9026
BrandRS PRO
HK$10.50
Each (In a Pack of 5)
units
- - - - - - - 160Ω - - - - - -
RS Stock No. 916-4314
Mfr. Part No.ZCAT1518-0730-BK
BrandTDK
HK$10.44
Each (In a Pack of 5)
units
ZCAT Clamp Filter Audio Equipment, Copiers, Digital Telephones, Electronic Musical Instruments, Facsimiles, HDDs, Monitors, PCs, Video Games, Word Processors - 25 - Yes 50Ω 15 Dia. x 22mm 7mm - 1 - 22mm
RS Stock No. 222-4416
Mfr. Part No.MTFC 231114T
BrandRichco
HK$67.13
Each
units
MTFC Toroid Core Computer Peripherals Ferrite - - Yes 121 26.6 Dia. x 18.6mm 10.9mm - 1 - 18.6mm
RS Stock No. 185-7492
Mfr. Part No.74272151
HK$79.15
Each
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 - - 49 x 39 x 35mm 12 → 15mm - 1 49mm 35mm
RS Stock No. 162-1272
Mfr. Part No.74271722S
HK$57.85
Each (In a Box of 20)
units
STAR-FIX Snap Ferrite General Application, Safety Relevant Application 4W620 - No Yes 270Ω 35.1 x 31 x 28mm 12.5mm - 1 31mm 28mm
RS Stock No. 151-2738
Mfr. Part No.475167281
BrandFair-Rite
HK$109.435
Each (In a Tray of 225)
units
04 Round Cable Snap-Its EMI Suppression 75 Material - - Yes - 39.5 x 23 x 23.4mm 10.15mm - 1 23mm 23.4mm
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