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. 814-9998
Mfr. Part No.74271111
MYR19.57
Each
units
STAR-TEC Snap Ferrite General Application, Safety Relevant Application 4W620 163Ω Yes Yes 275Ω 40.5 x 23.7 x 18.2mm 5mm - 1 23.7mm 18.2mm
RS Stock No. 168-3191
Mfr. Part No.74271251S
MYR148.00
Each
units
STAR-TEC Snap Ferrite EMI Suppression Nickel Zinc 35Ω Yes Yes 140Ω 62 x 60 x 55mm 25mm - 1 60mm 55mm
RS Stock No. 168-3194
Mfr. Part No.74271151
MYR60.47
Each
units
STAR-TEC Snap Ferrite EMI Suppression Nickel Zinc 35Ω Yes Yes 140Ω 49 x 39 x 35mm 15mm - 1 39mm 35mm
RS Stock No. 222-4337
Mfr. Part No.MSFC4-T
BrandRichco
MYR46.06
Each
units
MSFC Cable Core EMI Suppression A5 95Ω No Yes 195Ω 13.2 x 14.3mm 5mm - 1 - 14.3mm
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. 212-0617
Mfr. Part No.B62152A0004X030
BrandEPCOS
MYR3.87
Each (In a Pack of 5)
units
B62152 Double Aperture Core Broadband Transformers N30 116Ω No No 229Ω 14.5 x 8.5 x 8.3mm 3.4mm - 2 8.5mm 8.3mm
RS Stock No. 177-6022
Mfr. Part No.74271142
MYR18.522
Each (In a Box of 56)
units
STAR-TEC STAR-TEC EMI Suppression 4 W 620 42Ω No Yes 114Ω 32.5 x 18.8 x 13.2mm 5.4mm - 1 18.8mm 13.2mm
RS Stock No. 116-1471
Mfr. Part No.11.05.1006
BrandRotronic
MYR22.82
Each
units
EMV - Computer Peripherals Ferrite 120Ω No Yes 200Ω 32 ´ 19.5mm 6.5mm - 1 - -
RS Stock No. 736-1920
Mfr. Part No.74272733
MYR25.53
Each
units
STAR-FIX Snap Ferrite EMI Suppression 8W5000 - No Yes - 18.2 x 21.7 x 35.1mm 8mm - 1 35.1mm 18.2mm
RS Stock No. 163-3989
Mfr. Part No.74271358
MYR38.932
Each (In a Tray of 16)
units
WE-NCF Split Core General Application 4W620 223Ω No Yes 417Ω 60 x 45.5 x 15mm 26.5mm - 1 45.5mm 15mm
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. 173-0008
Mfr. Part No.0444164181
BrandFair-Rite
MYR25.544
Each (In a Box of 110)
units
- Round Cable Snap-Its EMI Suppression 43 Material, 44 Material 138Ω No Yes 230Ω 31 x 15.25 x 39.4mm 13.05mm - 1 15.25mm 39.4mm
RS Stock No. 484-1417
Mfr. Part No.0461164181
BrandFair-Rite
MYR33.80
Each
units
- EMI Suppression EMI Suppression - 41Ω No Yes 74Ω 39.4 x 31 x 30.5mm 13mm 475Ω 1 39.4mm 30.5mm
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. 123-2499
BrandRS PRO
MYR15.815
Each (In a Pack of 2)
units
- Clamp Filter Computer Peripherals, Digital TV, Internal & External Power Cables, Monitors, Printers Ferrite 180Ω No Yes 210Ω 29 Dia. x 33mm 15mm - 1 33mm -
RS Stock No. 123-2488
BrandRS PRO
MYR8.99
Each (In a Pack of 2)
units
- Clamp Filter Computer Peripherals, Digital TV, Internal & External Power Cables, Monitors, Printers Ferrite 223Ω No Yes 417Ω 19.5 Dia. x 23mm 8.1mm - 1 23mm -
RS Stock No. 109-4159
Mfr. Part No.ZCAT3618-2630D
BrandTDK
MYR7.914
Each (On a Reel of 480)
units
ZCAT Bead EMC Absorption 30 Material - No Yes 150Ω 17.5 Dia. x 33.5mm 26mm 30Ω 1 11.5mm -
RS Stock No. 163-3530
Mfr. Part No.74275815
MYR20.448
Each (In a Box of 30)
units
STAR-BUENO Snap Ferrite EMI Suppression 4W620 223Ω No Yes 417Ω 24 x 24 x 56.2mm 8.5mm - 1 56.2mm 24mm
RS Stock No. 169-6790
Mfr. Part No.ESD-SR-120
BrandKEMET
MYR6.628
Each (In a Box of 700)
units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - No Yes - 16 x 33 x 16.4mm 6mm - 1 33mm 16.4mm