The MPH04-12S09 from Ideal Power Ltd is a DC to DC Converter with Input Voltage 9 to 18 V, Output Voltage 1 9 V, Output Current 1 389 mA, Isolation Voltage 5000 V, Operating Temperature -40 to 105 ºC. Tags: Through Hole, Buck-Boost. More details for MPH04-12S09 can be seen below.