The PUC2405S2B from Flex Power Modules is a DC to DC Converter with Input Voltage 21.6 to 26.4 V, Output Voltage 1 5 V, Output Current 1 0.4 A, Output Power 2000 mW, Isolation Voltage 6000 Vdc. Tags: Through Hole, Buck/Step down. More details for PUC2405S2B can be seen below.