The SNDHS250B03 from Cosel is a DC to DC Converter with Input Voltage 200 to 400 V, Output Voltage 1 3.3 V, Output Current 1 50 A, Output Power 165000 mW, Isolation Voltage 500 Vdc. Tags: Surface Mount, Buck/Step down. More details for SNDHS250B03 can be seen below.