YA9293 Flyback Transformers Coilcraft YA9293 Flyback Transformer is designed for use with the isolated flyback DC-DC regulator in the Analog Devices ADP1031 isolated micropower management unit (µPMU). The YA9293 transformer offers 2250Vrms one-minute isolation from primary to secondary and a low leakage inductance of 1.62µH. Coilcraft YA9293 Flyback Transformer is AEC-Q200 Grade 1 qualified and has an ambient temperature range of -40°C to +125°C.