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. 811-9146
Mfr. Part No.ESD-SR-S25
BrandKEMET
HK$27.33
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. 169-6783
Mfr. Part No.ESD-R-38B
BrandKEMET
HK$21.48
Each (In a Box of 240)
units
ESD-R Toroidal Cores Toroid Core Round Cable Manganese-Zinc (Coating), Nickel Zinc - - - - 42.4 Dia. x 16mm 17.9mm - 1 - 16mm
RS Stock No. 116-1471
Mfr. Part No.11.05.1006
BrandRotronic
HK$35.34
Each
units
EMV - - - - - - 200 - - - - - -
RS Stock No. 814-9992
Mfr. Part No.74271142S
HK$39.30
Each
units
STAR-TEC Snap Ferrite General Application, Safety Relevant Application 4W620 - No Yes 182 32.5 x 18.8 x 13.2mm 5mm - 1 18.8mm 13.2mm
RS Stock No. 163-5438
Mfr. Part No.74271722
HK$40.081
Each (In a Box of 20)
units
- 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. 185-7112
Mfr. Part No.74272222
HK$53.848
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 10.5 → 12.5mm - 1 41.6mm 28.4mm
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. 163-5428
Mfr. Part No.74271112S
HK$34.628
Each (In a Box of 38)
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. 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. 163-5431
Mfr. Part No.74271142S
HK$37.57
Each (In a Box of 42)
units
STAR-TEC Snap Ferrite General Application, Safety Relevant Application 4W620 - No Yes 182 32.5 x 18.8 x 13.2mm 5mm - 1 18.8mm 13.2mm
RS Stock No. 123-2495
BrandRS PRO
HK$23.45
Each (In a Pack of 2)
units
- Clamp Filter Computer Peripherals, Digital TV, Internal & External Power Cables, Monitors, Printers Ferrite 50 - Yes 100Ω 28 Dia. x 32mm 11.5mm - 1 32mm -
RS Stock No. 170-3326
Mfr. Part No.ZCAT1518-0730-BK
BrandTDK
HK$5.07
Each (In a Box of 896)
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. 163-3201
Mfr. Part No.74271142
HK$37.57
Each (In a Box of 42)
units
STAR-TEC STAR-TEC EMI Suppression 4 W 620 - No Yes 321Ω 32.5 x 18.8 x 13.2mm 5.4mm - 1 18.8mm 13.2mm
RS Stock No. 123-2479
BrandRS PRO
HK$14.485
Each (In a Pack of 2)
units
- Clamp Filter Computer Peripherals, Digital TV, Internal & External Power Cables, Monitors, Printers Ferrite 55 - Yes 95Ω 15 Dia. x 25.2mm 4mm - 1 25.2 -
RS Stock No. 814-9964
Mfr. Part No.7427713
HK$16.26
Each
units
STAR-CLIP Snap Ferrite General Application, Safety Relevant Application Ferrite - - - - 26 x 16 x 20mm - - - 16mm 20mm
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. 163-3990
Mfr. Part No.74271378
HK$124.444
Each (In a Tray of 16)
units
WE-NCF Split Core - 4W620 - - Yes 200Ω 59 x 35 x 44.6mm 7.8mm - 1 35mm 44.6mm
RS Stock No. 774-0641
Mfr. Part No.ZCAT2035-0930A
BrandTDK
HK$19.13
Each
units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 19.5 Dia. x 35mm 9mm - 1 20.5mm -
RS Stock No. 774-0632
Mfr. Part No.ZCAT1325-0530A
BrandTDK
HK$10.44
Each
units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 20 Dia. x 25mm 5mm - 1 12.8mm 11.2mm
RS Stock No. 177-6022
Mfr. Part No.74271142
HK$36.05
Each (In a Box of 56)
units
STAR-TEC STAR-TEC EMI Suppression 4 W 620 - No Yes 321Ω 32.5 x 18.8 x 13.2mm 5.4mm - 1 18.8mm 13.2mm
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