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.
Description:
Round cable snap-its can easily accommodate round cables
or bundled wires with diameters from 2.5 mm (0.100) to 25.4 mm (1.000). These assemblies are available in four ferrite material classes to suppress differential or common-mode conducted EMI from 1 MHz ...
Description:
STAR-TEC snap ferrites from Wurth Elektronik feature cable
pinch protection, and are easy to open for measurement purposes. A prefixing cable system ensures a simple cable assembly process and a security lock prevents unauthorised removal of the ferrite from the ...
Description:
These split ferrite cores reduce the electromagnetic interference
from being induced in or radiated from data and power cables. High attenuation ratings are achieved with the housing design and the special process steps during the ferrite manufacture. The special snap ...
Description:
From Richco, these snap-fixing ferrite cores are designed
to attach to cables in order to reduce electromagnetic interference from being induced or radiated. The ferrite is housed in a hinged nylon 66 carrier, which is simply snapped around cable and ...
