The SNDBS400B03 from Cosel is a DC to DC Converter with Input Voltage 200 to 400 V, Output Voltage 1 3.3 V, Output Current 1 80 A, Output Power 264000 mW, Isolation Voltage 500 Vdc. Tags: Surface Mount, Buck/Step down. More details for SNDBS400B03 can be seen below.