SM91047EL is a flyback transformer designed for use with TI UCC28880 high voltage switcher in AC/DC power supply applications. It features a primary inductance of 5.0 mH ±15% measured at 10 kHz / 1 V, a rated current of 0.2 Adc, and a turns ratio of 11.875:1 typical. The transformer provides NP to NS isolation of 1.5 kVrms and NP/NS to core isolation of 200 Vrms, with leakage inductance of 100 µH maximum. Operating over a temperature range of -40°C to +125°C including temperature rise, this RoHS compliant component meets IEC 60950-1 Functional Grade of Insulation requirements. Common applications include metering, home automation, appliances, white goods, and LED drivers.