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. 116-1471
Mfr. Part No.11.05.1006
BrandRotronic
MYR22.73
Each
units
EMV - - - - - - 200 - - - - - -
RS Stock No. 163-3529
Mfr. Part No.74275813
MYR21.31
Each (In a Box of 38)
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. 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. 163-3201
Mfr. Part No.74271142
MYR17.96
Each (In a Box of 42)
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. 151-2741
Mfr. Part No.475176451
BrandFair-Rite
MYR111.119
Each (In a Tray of 29)
units
04 Round Cable Snap-Its EMI Suppression 75 Material - - Yes - 47.5 x 38.5 x 38.3mm 18.7mm - 1 38.5mm 38.3mm
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. 467-3696
Mfr. Part No.2873002402
BrandFair-Rite
MYR0.95
Each (In a Pack of 10)
units
- Multi Aperture Core EMI Suppression 73 Material - - - - 6.2 x 4.2 x 7mm 1.7mm - 2 4.2mm 7mm
RS Stock No. 484-1417
Mfr. Part No.0461164181
BrandFair-Rite
MYR33.80
Each
units
- EMI Suppression - - - - Yes 205Ω 39.4 x 31 x 30.5mm 13mm 475Ω 1 39.4mm 30.5mm
RS Stock No. 163-5432
Mfr. Part No.74271221S
MYR26.313
Each (In a Box of 20)
units
STAR-TEC Snap Ferrite General Application, Safety Relevant Application 4W620 - No Yes 270 42.2 x 33.6 x 29.5mm 10.5mm - 1 33.6mm 29.5mm
RS Stock No. 811-9115
Mfr. Part No.ESD-SR-150
BrandKEMET
MYR15.19
Each
units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 19.6 x 37.4 x 20.3mm 7mm - 1 37.4mm 20.3mm
RS Stock No. 811-9121
Mfr. Part No.ESD-SR-250
BrandKEMET
MYR45.34
Each
units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 31.5 x 38 x 31.6mm 13mm - 1 38mm 31.6mm
RS Stock No. 171-0801
Mfr. Part No.432703021311
BrandFERROXCUBE
MYR13.883
Each (On a Reel of 128)
units
- Cable Shield EMI Suppression 4S2 Material - - - - - - - - - -
RS Stock No. 741-3062
Mfr. Part No.ZCAT3618-2630D
BrandTDK
MYR12.26
Each
units
ZCAT Bead EMC Absorption 30 Material - - - - 17.5 Dia. x 33.5mm 26mm - 1 11.5mm -
RS Stock No. 151-2785
Mfr. Part No.475178281
BrandFair-Rite
MYR44.25
Each
units
04 Round Cable Snap-Its EMI Suppression 75 Material - - Yes - 39.4 x 21 x 21mm 9mm - 1 21mm 21mm
RS Stock No. 163-3527
Mfr. Part No.74272733
MYR22.764
Each (In a Box of 38)
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. 151-2737
Mfr. Part No.475178281
BrandFair-Rite
MYR41.269
Each (In a Tray of 225)
units
04 Round Cable Snap-Its EMI Suppression 75 Material - - Yes - 39.4 x 21 x 21mm 9mm - 1 21mm 21mm
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. 811-9137
Mfr. Part No.ESD-SR-S16
BrandKEMET
MYR12.62
Each
units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 23 x 20.5 x 20mm 8mm - 1 20.5mm 20mm
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 - - Yes - 16 x 33 x 16.4mm 6mm - 1 33mm 16.4mm
RS Stock No. 212-0588
Mfr. Part No.B62152A0001X001
BrandEPCOS
MYR7.506
Each (In a Pack of 5)
units
B62152 Double Aperture Core Broadband Transformers - - - - - 14.5 x 8.5 x 14.5mm 3.4mm - 2 8.5mm 14.5mm