The PKB4313D 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 25 A, Output Power 300000 mW, Isolation Voltage 750 to 2250 Vdc. Tags: Through Hole, Surface Mount, Buck/Step down. More details for PKB4313D can be seen below.