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. 168-3184
Mfr. Part No.74271151S
MYR45.07
Each (In a Box of 24)
units
STAR-TEC Snap Ferrite EMI Suppression Nickel Zinc 42Ω Yes Yes 114Ω 49 x 39 x 35mm 15mm - 1 39mm 35mm
RS Stock No. 173-0011
Mfr. Part No.0444173551
BrandFair-Rite
MYR34.255
Each (In a Box of 110)
units
- Round Cable Snap-Its EMI Suppression 43 Material, 44 Material 144Ω No Yes 245Ω 29.2 x 14.7 x 42mm 18.8mm - 1 14.7mm 42mm
RS Stock No. 136-9024
BrandRS PRO
MYR4.868
Each (In a Pack of 10)
units
- EMI Suppression EMI Suppression Nickel Zinc 225Ω No No 375Ω 12 (Dia.) x 30mm 5.3mm - 1 30mm -
RS Stock No. 163-5428
Mfr. Part No.74271112S
MYR17.42
Each (In a Box of 38)
units
STAR-TEC Snap Ferrite General Application, Safety Relevant Application 4W620 144Ω No Yes 240Ω 40.5 x 23.7 x 18.2mm 6mm - 1 23.7mm 18.2mm
RS Stock No. 136-9031
BrandRS PRO
MYR10.185
Each (In a Pack of 2)
units
- - EMI Suppression Nickel Zinc 35Ω No No 140Ω 12.7 Dia. ´ 12.7mm 7.92mm - 1 - -
RS Stock No. 466-9108
Mfr. Part No.0431164951
BrandFair-Rite
MYR9.12
Each
units
- Round Cable Snap-Its EMI Suppression 31 Material 218Ω No Yes 375Ω 17.3 x 8.4 x 36.2mm 5.1mm - 1 8.4mm 36.2mm
RS Stock No. 123-2492
BrandRS PRO
MYR13.37
Each (In a Pack of 2)
units
- Clamp Filter Computer Peripherals, Digital TV, Internal & External Power Cables, Monitors, Printers Ferrite 223Ω No Yes 525Ω 25.5 x 33 x 23.5mm 10mm - 1 33mm 23.5mm
RS Stock No. 163-3994
Mfr. Part No.7427155
MYR30.65
Each (In a Box of 30)
units
STAR-RING Split Core Computer Data and Power Cable, Mounting on Circuit Boards 4W620 156Ω No Yes 260Ω 55 x 20 x 44mm 27mm - 1 20mm 44mm
RS Stock No. 756-8395
Mfr. Part No.7427155
MYR31.42
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 55Ω Yes Yes 110Ω 55 x 20 x 44mm 27mm - 1 20mm 44mm
RS Stock No. 815-0009
Mfr. Part No.74271132S
MYR23.10
Each
units
STAR-TEC Snap Ferrite General Application, Safety Relevant Application 4W620 125Ω Yes Yes 210Ω 40.5 x 24.5 x 21mm 8.5mm - 1 24.5mm 21mm
RS Stock No. 257-4266
Mfr. Part No.MSFC 13K
BrandRichco
MYR40.32
Each
units
MSFC Cable Core EMI Suppression A5 51Ω No Yes 82Ω 28 x 29.6mm 13.5mm - 1 - 29.6mm
RS Stock No. 814-3401
Mfr. Part No.432703021131
BrandFERROXCUBE
MYR49.88
Each
units
- Cable Shield EMI Suppression 4S2 Material 225Ω No Yes 380Ω 29 x 32.5 x 14.8mm 13.4mm - 1 29mm 14.8mm
RS Stock No. 163-5429
Mfr. Part No.74271131S
MYR20.927
Each (In a Box of 38)
units
STAR-TEC Snap Ferrite General Application, Safety Relevant Application 4W620 180Ω No Yes 310Ω 40.5 x 24.5 x 21mm 7.5mm - 1 24.5mm 21mm
RS Stock No. 815-0002
Mfr. Part No.74271221S
MYR27.67
Each
units
STAR-TEC Snap Ferrite General Application, Safety Relevant Application 4W620 144Ω Yes Yes 240Ω 42.2 x 33.6 x 29.5mm 10.5mm - 1 33.6mm 29.5mm
RS Stock No. 162-0153
Mfr. Part No.B62152A0001X001
BrandEPCOS
MYR5.038
Each (In a Box of 500)
units
B62152 Double Aperture Core Broadband Transformers - - No No - 14.5 x 8.5 x 14.5mm 3.4mm - 2 8.5mm 14.5mm
RS Stock No. 756-8682
Mfr. Part No.74271358
MYR43.87
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 48Ω No Yes 98Ω 60 x 45.5 x 15mm 26.5mm - 1 45.5mm 15mm
RS Stock No. 136-9025
BrandRS PRO
MYR28.55
Each
units
- - EMI Suppression Nickel Zinc 218Ω No No 182Ω 18.5 Dia. ´ 28.57mm 10mm - 1 - -
RS Stock No. 171-0801
Mfr. Part No.432703021311
BrandFERROXCUBE
MYR14.165
Each (On a Reel of 128)
units
- Cable Shield EMI Suppression 4S2 Material - - - - - - - - - -
RS Stock No. 923-6163
Mfr. Part No.74271211
MYR89.71
Each
units
STAR-TEC Snap Ferrite EMI Suppression 4 W 620 28Ω Yes Yes 100Ω 43 x 56 x 47mm 21mm - 1 56mm 47mm
RS Stock No. 466-9215
Mfr. Part No.0444164951
BrandFair-Rite
MYR9.08
Each
units
- Round Cable Snap-Its EMI Suppression 43 Material, 44 Material - No Yes 175Ω 17.3 x 8.4 x 36.2mm 5.1mm - 1 8.4mm 36.2mm