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. 169-6789
Mfr. Part No.ESD-SR-100
BrandKEMET
£0.722
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. 811-9109
Mfr. Part No.ESD-SR-100
BrandKEMET
£1.68
Each
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. 169-6797
Mfr. Part No.ESD-SR-S10
BrandKEMET
£0.778
Each (In a Box of 800)
Units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 15.5 x 18.5 x 14mm 6mm - 1 18.5mm 14mm
RS Stock No. 169-6790
Mfr. Part No.ESD-SR-120
BrandKEMET
£0.98
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. 811-9133
Mfr. Part No.ESD-SR-S10
BrandKEMET
£1.38
Each
Units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 15.5 x 18.5 x 14mm 6mm - 1 18.5mm 14mm
RS Stock No. 811-9111
Mfr. Part No.ESD-SR-120
BrandKEMET
£2.058
Each (In a Bag of 5)
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. 169-6795
Mfr. Part No.ESD-SR-160H
BrandKEMET
£2.527
Each (In a Box of 210)
Units
ESD-SR Snap-on Cores Snap Ferrite Round Cable Nickel Zinc - - Yes - 19.5 x 38.5 x 19.5mm 9mm - 1 38.5mm 19.5mm
RS Stock No. 811-9118
Mfr. Part No.ESD-SR-110
BrandKEMET
£2.43
Each
Units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 14.4 x 28 x 14.2mm 5mm - 1 28mm 14.2mm
RS Stock No. 811-9127
Mfr. Part No.ESD-SR-160H
BrandKEMET
£3.70
Each
Units
ESD-SR Snap-on Cores Snap Ferrite Round Cable Nickel Zinc - - Yes - 19.5 x 38.5 x 19.5mm 9mm - 1 38.5mm 19.5mm
RS Stock No. 169-6792
Mfr. Part No.ESD-SR-110
BrandKEMET
£0.881
Each (In a Box of 900)
Units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 14.4 x 28 x 14.2mm 5mm - 1 28mm 14.2mm
RS Stock No. 169-6796
Mfr. Part No.ESD-SR-250H
BrandKEMET
£4.95
Each (In a Box of 60)
Units
ESD-SR Snap-on Cores Snap Ferrite Round Cable Nickel Zinc - - Yes - 30 x 42 x 30mm 13mm - 1 42mm 30mm
RS Stock No. 811-9130
Mfr. Part No.ESD-SR-250H
BrandKEMET
£5.97
Each
Units
ESD-SR Snap-on Cores Snap Ferrite Round Cable Nickel Zinc - - Yes - 30 x 42 x 30mm 13mm - 1 42mm 30mm
RS Stock No. 169-6798
Mfr. Part No.ESD-SR-S16
BrandKEMET
£1.283
Each (In a Box of 280)
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. 811-9137
Mfr. Part No.ESD-SR-S16
BrandKEMET
£1.82
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. 169-6800
Mfr. Part No.ESD-SR-S25
BrandKEMET
£1.275
Each (In a Box of 200)
Units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 33 x 15.5 x 29mm 14.5mm - 1 15.5mm 29mm
RS Stock No. 811-9146
Mfr. Part No.ESD-SR-S25
BrandKEMET
£1.74
Each
Units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 33 x 15.5 x 29mm 14.5mm - 1 15.5mm 29mm
RS Stock No. 169-6793
Mfr. Part No.ESD-SR-250
BrandKEMET
£3.508
Each (In a Box of 60)
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. 169-6794
Mfr. Part No.ESD-SR-160
BrandKEMET
£1.539
Each (In a Box of 400)
Units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 20.2 x 39 x 20mm 9mm - 1 39mm 20mm
RS Stock No. 811-9124
Mfr. Part No.ESD-SR-160
BrandKEMET
£1.72
Each
Units
ESD-SR Snap-on Cores Snap Ferrite Consumer Electronics Ferrite - - Yes - 20.2 x 39 x 20mm 9mm - 1 39mm 20mm
RS Stock No. 811-9121
Mfr. Part No.ESD-SR-250
BrandKEMET
£4.50
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