Ferrite EMI disk and plate
LAIRD TECHNOLOGIES

Laird Technologies' ferrite disks and plates can be utilized either as inductively-coupled components or EMI shields on PC board components and traces. After the PC board soldering process, a ferrite disk or plate can be installed directly on the source of EMI. Inductive coupling occurs when the ferrite affects the conducted wave form leaving the active component. The rise time of the wave form is effectively slowed by the ferrite, and the overshoot and associated ringing are attenuated. EMI shielding occurs when the ferrite absorbs the radiated emissions from active components, effectively protecting other boards or components in the vicinity from radiated contamination.

Multi-hole ferrite plates for connectors are low profile ferrite components for connector assemblies and board connector leads that suppress EMI before it can couple to cables that serve as troublesome EMI antennas.