The BMR456XX04/001 from Flex Power Modules is a DC to DC Converter with Input Voltage 36 to 75 V, Output Voltage 1 4 to 13.2 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 BMR456XX04/001 can be seen below.