YFF-AC 3-terminal Filters TDK YFF-AC 3-terminal Filters are small and high-performance EMC components for automotive applications and effective for the decoupling use. These 3-terminal filters incorporate good attenuation characteristic in a wide bandwidth range. The reliability characteristics of these YFF-AC 3-terminal filters are evaluated based on AEC-Q200 condition. Typical applications include Electronic Control Units (ECUs), car navigation systems, camera systems, and millimeter wave radar systems.