The UDH01-12S3P3 from Ideal Power Ltd is a DC to DC Converter with Input Voltage 9 to 18 V, Output Voltage 1 3.3 V, Output Current 1 300 mA, Output Power 1000 mW, Isolation Voltage 1600 V. Tags: Surface Mount, Through Hole, Buck/Step down. More details for UDH01-12S3P3 can be seen below.