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. 815-0018
Mfr. Part No.74271222S
£5.43
Each
Units
STAR-TEC Snap Ferrite General Application, Safety Relevant Application 4W620 - No Yes 265Ω 42.2 x 33.5 x 28.8mm 12.5mm - 1 33.5mm 28.8mm
RS Stock No. 173-0000
Mfr. Part No.0444167281
BrandFair-Rite
£1.569
Each (In a Box of 196)
Units
- Round Cable Snap-Its EMI Suppression 43 Material, 44 Material - - Yes 210 23.7 x 11.7 x 39.4mm 10.15mm - 1 11.7mm 39.4mm
RS Stock No. 222-4400
Mfr. Part No.MTFC 201010T
BrandRichco
£4.47
Each
Units
MTFC Toroid Core Computer Peripherals Ferrite - - Yes 82 23.3 Dia. x 14.7mm 9.8mm - 1 - 14.7mm
RS Stock No. 774-0635
Mfr. Part No.ZCAT1518-0730
BrandTDK
£0.97
Each
Units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 15 Dia. X 18mm 7mm - 1 15mm -
RS Stock No. 466-9221
Mfr. Part No.0444167281
BrandFair-Rite
£1.83
Each
Units
- Round Cable Snap-Its EMI Suppression 43 Material, 44 Material - - Yes 210 23.7 x 11.7 x 39.4mm 10.15mm - 1 11.7mm 39.4mm
RS Stock No. 109-4166
Mfr. Part No.ZCAT2132-1130
BrandTDK
£0.98
Each (On a Reel of 480)
Units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 36 Dia x 32mm 11mm - 1 32mm 22mm
RS Stock No. 109-4163
Mfr. Part No.ZCAT1518-0730
BrandTDK
£0.45
Each (On a Reel of 896)
Units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 15 Dia. X 18mm 7mm - 1 15mm -
RS Stock No. 916-4320
Mfr. Part No.ZCAT2132-1130-BK
BrandTDK
£2.166
Each (In a Pack of 5)
Units
ZCAT Clamp Filter Audio Equipment, Copiers, Digital Telephones, Electronic Musical Instruments, Facsimiles, HDDs, Monitors, PCs, Video Games, Word Processors - - - Yes 40Ω 20.5 Dia. x 36mm 11mm - 1 - 36mm
RS Stock No. 170-3329
Mfr. Part No.ZCAT2132-1130-BK
BrandTDK
£0.801
Each (In a Box of 480)
Units
ZCAT Clamp Filter Audio Equipment, Copiers, Digital Telephones, Electronic Musical Instruments, Facsimiles, HDDs, Monitors, PCs, Video Games, Word Processors - - - Yes 40Ω 20.5 Dia. x 36mm 11mm - 1 - 36mm
RS Stock No. 212-0617
Mfr. Part No.B62152A0004X030
BrandEPCOS
£0.774
Each (In a Pack of 5)
Units
B62152 Double Aperture Core Broadband Transformers N30 - - - - 14.5 x 8.5 x 8.3mm 3.4mm - 2 8.5mm 8.3mm
RS Stock No. 774-0645
Mfr. Part No.ZCAT2132-1130
BrandTDK
£2.07
Each
Units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 36 Dia x 32 mm 11mm - 1 32mm 22mm
RS Stock No. 815-0005
Mfr. Part No.74271131S
£4.27
Each
Units
STAR-TEC Snap Ferrite General Application, Safety Relevant Application 4W620 - No Yes 246 40.5 x 24.5 x 21mm - - 1 24.5mm 21mm
RS Stock No. 163-5429
Mfr. Part No.74271131S
£3.087
Each (In a Box of 38)
Units
STAR-TEC Snap Ferrite General Application, Safety Relevant Application 4W620 - No Yes 246 40.5 x 24.5 x 21mm - - 1 24.5mm 21mm
RS Stock No. 109-4167
Mfr. Part No.ZCAT2436-1330A
BrandTDK
£1.555
Each (On a Reel of 400)
Units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 28 Dia. x 35mm 13mm - 1 19.5mm 17.4mm
RS Stock No. 774-0648
Mfr. Part No.ZCAT2436-1330A
BrandTDK
£3.06
Each
Units
ZCAT Ferrite Core Suppression Components 30 Material - - - - 28 Dia. x 35mm 13mm - 1 19.5mm 17.4mm
RS Stock No. 212-0594
Mfr. Part No.B62152A0004X001
BrandEPCOS
£1.508
Each (In a Pack of 5)
Units
B62152 Multi Aperture Core Broadband Transformers - - - - - 14.5 x 8.5 x 8.3mm 3.4mm - - 8.5mm 8.3mm
RS Stock No. 162-0177
Mfr. Part No.B62152A0004X001
BrandEPCOS
£0.755
Each (In a Box of 1000)
Units
B62152 Multi Aperture Core Broadband Transformers - - - - - 14.5 x 8.5 x 8.3mm 3.4mm - - 8.5mm 8.3mm
RS Stock No. 116-1487
Mfr. Part No.11.05.1010
BrandRotronic
£3.93
Each
Units
EMV Conduit Core EMI Suppression Ferrite - - Yes 100 24.5 x 32 x 23.5mm 10mm - 1 32mm 23.5mm
RS Stock No. 222-4416
Mfr. Part No.MTFC 231114T
BrandRichco
£5.96
Each
Units
MTFC Toroid Core Computer Peripherals Ferrite - - Yes 121 26.6 Dia. x 18.6mm 10.9mm - 1 - 18.6mm
RS Stock No. 163-5437
Mfr. Part No.74271633
£5.613
Each (In a Box of 38)
Units
STAR-GAP Snap Ferrite General Application, Safety Relevant Application 4W620 - No Yes - 35.1 x 21.7 x 19mm 4.5 → 8mm - 1 21.7mm 19mm