YFF 3-Terminal Feedthrough Filters TDK YFF 3-Terminal Filters provide ultra-low ESL solutions by utilizing the special design equivalent to multi-component LC circuits. The ground terminal allows the noise to bypass, which makes the YFF series ideal for electromagnetic interference (EMI) suppression or high-speed digital IC decoupling applications. YFF-AC/AH 3-terminal filters are automotive-grade components used to replace multiple components in traditional LC filter circuits. YFF-HC series is designed for large current (6A to 10A) circuits, including LCD and PC/server applications. YFF-P series features excellent attenuation characteristics over a wideband range and is designed for 2A to 6A applications. The YFF-SC series offers excellent attenuation characteristics in high-frequency ranges and is designed for low-current power lines. The YFF series is offered in a variety of case sizes with operating temperature ranges up to 125ºC and a 4V to 50V rated voltage range.