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. 774-0635
Mfr. Part No.ZCAT1518-0730
BrandTDK
MYR4.95
Each
units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 15 Dia. X 18mm 7mm - 1 15mm -
RS Stock No. 309-7962
Mfr. Part No.74271221
MYR23.58
Each
units
STAR-TEC STAR-TEC General Application 4 W 620 - No Yes 270Ω 33.6 x 29.5 x 37.7mm 13mm - - 33.6mm 29.5mm
RS Stock No. 815-0021
Mfr. Part No.74271
MYR1.176
Each (In a Bag of 10)
units
- Safety Key General Application - - - - - - - - - - -
RS Stock No. 172-9999
Mfr. Part No.0431164281
BrandFair-Rite
MYR10.009
Each (In a Box of 196)
units
- Round Cable Snap-Its EMI Suppression 31 Material - - Yes 310 20 x 9.8 x 39.4mm 6.6mm - 1 9.8mm 39.4mm
RS Stock No. 177-6025
Mfr. Part No.74271142S
MYR16.73
Each (In a Box of 56)
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. 123-2493
BrandRS PRO
MYR6.485
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. 756-8386
Mfr. Part No.7427154
MYR25.11
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 130Ω 43 x 20 x 32mm 16mm - 1 20mm 32mm
RS Stock No. 123-2490
BrandRS PRO
MYR12.135
Each (In a Pack of 2)
units
- Clamp Filter Computer Peripherals, Digital TV, Internal & External Power Cables, Monitors, Printers Ferrite 80 - Yes 130Ω 19.5 x 35 x 18mm 9mm - 1 35mm 18mm
RS Stock No. 109-4163
Mfr. Part No.ZCAT1518-0730
BrandTDK
MYR2.949
Each (On a Reel of 896)
units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 15 Dia. X 18mm 7mm - 1 15mm -
RS Stock No. 169-6795
Mfr. Part No.ESD-SR-160H
BrandKEMET
MYR13.391
Each (In a Box of 210)
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. 811-9146
Mfr. Part No.ESD-SR-S25
BrandKEMET
MYR13.62
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. 811-9118
Mfr. Part No.ESD-SR-110
BrandKEMET
MYR12.54
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. 811-9133
Mfr. Part No.ESD-SR-S10
BrandKEMET
MYR8.84
Each
units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 15.5 x 18.5 x 14mm 6mm - 1 18.5mm 14mm
RS Stock No. 169-6800
Mfr. Part No.ESD-SR-S25
BrandKEMET
MYR7.876
Each (In a Box of 200)
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. 466-9091
Mfr. Part No.0431164281
BrandFair-Rite
MYR10.79
Each
units
- Round Cable Snap-Its EMI Suppression 31 Material - - Yes 310 20 x 9.8 x 39.4mm 6.6mm - 1 9.8mm 39.4mm
RS Stock No. 169-6792
Mfr. Part No.ESD-SR-110
BrandKEMET
MYR5.798
Each (In a Box of 900)
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. 136-9027
BrandRS PRO
MYR13.985
Each (In a Pack of 2)
units
- - - - - - - 175Ω - - - - - -
RS Stock No. 367-5281
Mfr. Part No.74271142
MYR19.53
Each
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. 168-3222
Mfr. Part No.74271251
MYR143.00
Each
units
STAR-TEC Snap Ferrite - Nickel Zinc - Yes Yes - 62 x 60 x 55 55mm - 1 60mm 55mm
RS Stock No. 814-3411
Mfr. Part No.432703021381
BrandFERROXCUBE
MYR1.866
Each (In a Bag of 5)
units
- Cable Shield EMI Suppression 4S2 Material - - - - 9.5 Dia. x 19.05mm 4.75mm - 1 - 19.05mm