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. 136-9029
BrandRS PRO
MYR10.63
Each (In a Pack of 5)
units
- - - - - - - 200Ω - - - - - -
RS Stock No. 124-9620
BrandRS PRO
MYR11.466
Each (In a Pack of 5)
units
- - EMI Suppression Nickel Zinc 128Ω - - 268Ω - - - - - -
RS Stock No. 169-6789
Mfr. Part No.ESD-SR-100
BrandKEMET
MYR4.671
Each (In a Box of 900)
units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 16.5 x 21 x 16.5mm 6mm - 1 21mm 16.5mm
RS Stock No. 123-2482
BrandRS PRO
MYR10.425
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. 163-5435
Mfr. Part No.7427154S
MYR24.74
Each (In a Box of 40)
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. 163-3994
Mfr. Part No.7427155
MYR29.60
Each (In a Box of 30)
units
STAR-RING Split Core - 4W620 - No Yes 110Ω 55 x 20 x 44mm 27mm - 1 20mm 44mm
RS Stock No. 815-0011
Mfr. Part No.74271722
MYR21.89
Each
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. 163-5426
Mfr. Part No.74271111
MYR18.648
Each (In a Box of 38)
units
STAR-TEC Snap Ferrite General Application, Safety Relevant Application 4W620 - No Yes 320 40.5 x 23.7 x 18.2mm - - 1 23.7mm 18.2mm
RS Stock No. 123-2492
BrandRS PRO
MYR12.905
Each (In a Pack of 2)
units
- Clamp Filter Computer Peripherals, Digital TV, Internal & External Power Cables, Monitors, Printers Ferrite 80 - Yes 130Ω 25.5 x 33 x 23.5mm 10mm - 1 33mm 23.5mm
RS Stock No. 168-3184
Mfr. Part No.74271151S
MYR45.07
Each (In a Box of 24)
units
STAR-TEC Snap Ferrite - Nickel Zinc - Yes Yes - 49 x 39 x 35 35mm - 1 39mm 35mm
RS Stock No. 814-9970
Mfr. Part No.7427154S
MYR26.88
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. 167-8217
Mfr. Part No.B62152A0007X001
BrandEPCOS
MYR2.319
Each (In a Box of 2000)
units
B62152 Double Aperture Core Broadband Transformers - - - - - 7.25 x 4.2 x 6.2mm 1.7mm - 2 4.2mm 6.2mm
RS Stock No. 163-5441
Mfr. Part No.7427711
MYR6.05
Each (In a Tray of 180)
units
- Snap Ferrite STAR-TEC 74271111/74271112 STAR-GAP 74271633 STAR-FIX 74271733 STAR-FIX LFS 74272733 Ferrite - - - - 26 x 16 x 18.5mm - - - 16mm 18.5mm
RS Stock No. 367-5304
Mfr. Part No.74271132
MYR25.75
Each
units
STAR-TEC STAR-TEC EMI Suppression 4 W 620 - No Yes 241Ω 36.3 x 24.2 x 19.7mm 7.0 → 8.5mm - 1 24.2mm 19.7mm
RS Stock No. 257-4266
Mfr. Part No.MSFC 13K
BrandRichco
MYR38.15
Each
units
MSFC Cable Core EMI Suppression A5 - - Yes 252 28 x 29.6mm 13.5mm - 1 - 29.6mm
RS Stock No. 923-6166
Mfr. Part No.74271211S
MYR86.70
Each
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. 756-8395
Mfr. Part No.7427155
MYR30.47
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 110Ω 55 x 20 x 44mm 27mm - 1 20mm 44mm
RS Stock No. 815-0015
Mfr. Part No.74271733
MYR14.27
Each
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. 736-1917
Mfr. Part No.74275813
MYR23.12
Each
units
STAR-BUENO Snap Ferrite EMI Suppression 4W620 - No Yes 200Ω 24 x 24 x 39.2mm 8.5mm - 1 39.2mm 24mm
RS Stock No. 222-4359
Mfr. Part No.MSFC6-T
BrandRichco
MYR37.52
Each
units
MSFC Cable Core EMI Suppression A5 - - Yes 192 19 x 20.8mm 7mm - 1 - 20.8mm