The PKB4413D from Flex Power Modules is a DC to DC Converter with Input Voltage 36 to 60 V, Output Voltage 1 12 V, Output Current 1 37.5 A, Output Power 450000 mW, Isolation Voltage 750 to 2250 Vdc. Tags: Through Hole, Buck/Step down. More details for PKB4413D can be seen below.