ESMIT-4180C Automotive Audio/Signal Power Inductor Sumida ESMIT-4180C Automotive Audio/Signal Power Inductor is used in Freescale hybrid vehicle/battery management reference designs. ESMIT-4180C is used with designs involving the Freescale MC33771 battery cell controller and MC33664 transformer physical layer. This Sumida low-profile inductor is AEC-Q200 qualified and features 3750Vrms high voltage isolation. The ESMIT-4180C operates from -40°C to +125°C and is designed for automotive and industrial applications.