The SFS15481R8 from Cosel is a DC to DC Converter with Input Voltage 36 to 76 V, Output Voltage 1 1.8 V, Output Current 1 4.5 A, Output Power 8100 mW, Isolation Voltage 1500 Vdc. Tags: Through Hole, Surface Mount, Buck/Step down. More details for SFS15481R8 can be seen below.