Würth Elektronik WE-CPU EMI Suppression CPU Ferrite Plates are thermally conductive ferrite plates designed for EMI absorption on CPUs. The ferrite plates are available both with and without adhesive tape and feature impedances up to 800Ω with a ±25% impedance tolerance. The customizable plates offer a +140°C maximum curie temperature and a -25°C to +125°C operating temperature range.