Flat-Pac™ FP0404 Power Inductors Coiltronics / Eaton Flat-Pac™ FP0404 high current, high frequency power inductors feature controlled DCR for sensing circuits and a frequency range up to 2MHz. The FP0404 series comes in a 4mm x 4mm x 4mm maximum surface-mount package with ferrite core material. FP0404 are halogen free and RoHS compliant with a maximum operating temperature of 125°C. Coiltronics / Eaton Flat-Pac FP0404 power inductors are ideal for applications including multi-phase regulators, voltage regulator module (VRM), desktop and server VRMS and EVRDS,data networking and storage systems, notebook regulators, and much more.