The SNDHS50B28 from Cosel is a DC to DC Converter with Input Voltage 200 to 400 V, Output Voltage 1 28 V, Output Current 1 1.8 A, Output Power 50400 mW, Isolation Voltage 500 Vdc. Tags: Surface Mount, Buck/Step down. More details for SNDHS50B28 can be seen below.