The PUC1203S2B from Flex Power Modules is a DC to DC Converter with Input Voltage 10.8 to 13.2 V, Output Voltage 1 3.3 V, Output Current 1 0.61 A, Output Power 2000 mW, Isolation Voltage 6000 Vdc. Tags: Through Hole, Buck/Step down. More details for PUC1203S2B can be seen below.