The BMR456XX05/004 from Flex Power Modules is a DC to DC Converter with Input Voltage 36 to 75 V, Output Voltage 1 12 V, Output Current 1 35 A, Output Power 420000 mW, Isolation Voltage 750 to 2250 Vdc. Tags: Through Hole, Buck/Step down. More details for BMR456XX05/004 can be seen below.