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. 109-4165
Mfr. Part No.ZCAT2035-0930A
BrandTDK
£0.914
Each (On a Reel of 480)
Units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 19.5 Dia. x 35mm 9mm - 1 20.5mm -
RS Stock No. 774-0641
Mfr. Part No.ZCAT2035-0930A
BrandTDK
£1.68
Each
Units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 19.5 Dia. x 35mm 9mm - 1 20.5mm -
RS Stock No. 309-7962
Mfr. Part No.74271221
£5.16
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. 367-5304
Mfr. Part No.74271132
£4.51
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. 309-7940
Mfr. Part No.74271131
£4.19
Each
Units
STAR-TEC STAR-TEC General Application 4 W 620 - No Yes 246Ω 24.2 x 36.4 x 20.1mm 9mm - - 24.6mm 20.1mm
RS Stock No. 367-5297
Mfr. Part No.74271112
£3.86
Each
Units
STAR-TEC STAR-TEC EMI Suppression 4 W 620 - No Yes 321Ω 23.7 x 36.9 x 18.2mm 6.6mm - 1 36.9mm 18.2mm
RS Stock No. 367-5310
Mfr. Part No.74271222
£5.16
Each
Units
STAR-TEC STAR-TEC EMI Suppression 4 W 620 - No Yes 265 42.2 x 28.8 x 33.5mm 13mm - 1 28.8mm 33.5mm
RS Stock No. 741-3068
Mfr. Part No.ZCAT3035-1330
BrandTDK
£3.81
Each
Units
ZCAT Bead EMC Absorption 30 Material - - - - 34 Dia. x 39mm 13mm - 1 30mm -
RS Stock No. 109-4160
Mfr. Part No.ZCAT3035-1330
BrandTDK
£2.027
Each (On a Reel of 200)
Units
ZCAT Bead EMC Absorption 30 Material - - - - 34 Dia. x 39mm 13mm - 1 30mm -
RS Stock No. 815-0021
Mfr. Part No.74271
£0.206
Each (In a Bag of 10)
Units
- Safety Key General Application - - - - - - - - - - -
RS Stock No. 222-4343
Mfr. Part No.MSFC5-T
BrandRichco
£5.04
Each
Units
MSFC Cable Core EMI Suppression A5 - - Yes 229 16.6 x 18mm 6mm - 1 - 18mm
RS Stock No. 736-1920
Mfr. Part No.74272733
£5.03
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. 163-3527
Mfr. Part No.74272733
£3.528
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. 177-6022
Mfr. Part No.74271142
£2.587
Each (In a Box of 56)
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. 367-5281
Mfr. Part No.74271142
£3.93
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. 163-3201
Mfr. Part No.74271142
£2.846
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. 173-0010
Mfr. Part No.0431164181
BrandFair-Rite
£2.971
Each (In a Box of 110)
Units
- Round Cable Snap-Its EMI Suppression 31 Material - - Yes 260 31 x 15.25 x 39.4mm 13.05mm - 1 15.25mm 39.4mm
RS Stock No. 466-9085
Mfr. Part No.0431164181
BrandFair-Rite
£3.33
Each
Units
- Round Cable Snap-Its EMI Suppression 31 Material - - Yes 260 31 x 15.25 x 39.4mm 13.05mm - 1 15.25mm 39.4mm
RS Stock No. 212-0588
Mfr. Part No.B62152A0001X001
BrandEPCOS
£2.146
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
RS Stock No. 162-0153
Mfr. Part No.B62152A0001X001
BrandEPCOS
£0.843
Each (In a Box of 500)
Units
B62152 Double Aperture Core Broadband Transformers - - - - - 14.5 x 8.5 x 14.5mm 3.4mm - 2 8.5mm 14.5mm
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