The BMR456XX12/017 from Flex Power Modules is a DC to DC Converter with Input Voltage 40 to 60 V, Output Voltage 1 12.45 V, Output Current 1 39 A, Output Power 462000 mW, Isolation Voltage 750 to 2250 Vdc. Tags: Through Hole, Buck/Step down. More details for BMR456XX12/017 can be seen below.