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. 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. 466-9186
Mfr. Part No.0443800506
BrandFair-Rite
HK$12.93
Each
units
- Round Cable Core Suppression Components Nylon 66 - - Yes - 29.7 x 15.6 x 25.4mm 12.8mm - 1 15.6mm 25.4mm
RS Stock No. 173-0017
Mfr. Part No.0431176451
BrandFair-Rite
HK$144.493
Each (In a Box of 60)
units
- Round Cable Snap-Its EMI Suppression 31 Material - - Yes 380 38.6 x 19.15 x 47.5mm 18.35mm - 1 19.15mm 47.5mm
RS Stock No. 811-9127
Mfr. Part No.ESD-SR-160H
BrandKEMET
HK$35.70
Each
units
ESD-SR Snap-on Cores Snap Ferrite Round Cable Nickel Zinc - - Yes - 19.5 x 38.5 x 19.5mm 9mm - 1 38.5mm 19.5mm
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. 123-2482
BrandRS PRO
HK$9.77
Each (In a Pack of 2)
units
- Clamp Filter Computer Peripherals, Digital TV, Internal & External Power Cables, Monitors, Printers Ferrite 60 - Yes 100Ω 13 x 25.5 x 11.8mm 5.2mm - 1 25.5mm 11.8mm
RS Stock No. 123-2488
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 50 - Yes 110Ω 19.5 Dia. x 23mm 8.1mm - 1 23mm -
RS Stock No. 466-9209
Mfr. Part No.0444164281
BrandFair-Rite
HK$15.69
Each
units
- Round Cable Snap-Its EMI Suppression 43 Material, 44 Material - - Yes - 20 x 9.8 x 39.4mm 6.6mm - 1 9.8mm 39.4mm
RS Stock No. 151-2789
Mfr. Part No.475167281
BrandFair-Rite
HK$98.69
Each
units
04 Round Cable Snap-Its EMI Suppression 75 Material - - Yes - 39.5 x 23 x 23.4mm 10.15mm - 1 23mm 23.4mm
RS Stock No. 916-4327
Mfr. Part No.ZCAT2035-0930A-BK
BrandTDK
HK$20.888
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 - - - Yes 50Ω 19.5 Dia. x 35mm 9mm - 1 - 35mm
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. 185-7535
Mfr. Part No.74272211
HK$192.81
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 - - 56 x 47 x 43mm 17 → 21mm - 1 56mm 43mm
RS Stock No. 177-6022
Mfr. Part No.74271142
HK$32.024
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
RS Stock No. 109-4166
Mfr. Part No.ZCAT2132-1130
BrandTDK
HK$11.55
Each (On a Reel of 480)
units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 36 Dia x 32mm 11mm - 1 32mm 22mm
RS Stock No. 163-5440
Mfr. Part No.74271733S
HK$29.78
Each (In a Box of 38)
units
STAR-FIX Snap Ferrite General Application, Safety Relevant Application 4W620 - No Yes 246Ω 35.1 x 21.7 x 18.2mm 8mm - 1 21.7mm 18.2mm
RS Stock No. 163-8201
Mfr. Part No.74271211S
HK$141.19
Each (In a Box of 20)
units
STAR-TEC Snap Ferrite EMI Suppression 4 W 620 - Yes Yes 425Ω 43 x 56 x 47mm 17 → 21mm - 1 56mm 47mm
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. 814-9970
Mfr. Part No.7427154S
HK$52.54
Each
units
STAR-RING Snap Ferrite General Application, Safety Relevant Application 4W620 - No Yes - 43 x 20 x 32mm 16mm - 1 20mm 32mm
RS Stock No. 170-3329
Mfr. Part No.ZCAT2132-1130-BK
BrandTDK
HK$12.36
Each (In a Box of 480)
units
ZCAT Clamp Filter Audio Equipment, Copiers, Digital Telephones, Electronic Musical Instruments, Facsimiles, HDDs, Monitors, PCs, Video Games, Word Processors - - - Yes 40Ω 20.5 Dia. x 36mm 11mm - 1 - 36mm
RS Stock No. 162-0177
Mfr. Part No.B62152A0004X001
BrandEPCOS
HK$7.885
Each (In a Box of 1000)
units
B62152 Multi Aperture Core Broadband Transformers - - - - - 14.5 x 8.5 x 8.3mm 3.4mm - - 8.5mm 8.3mm
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