The SPX1F12S9 from Calex Manufacturing is a DC to DC Converter with Input Voltage 10.8 to 13.2 V, Output Voltage 1 9 V, Output Current 1 110 mA, Output Power 1 W, Isolation Voltage 1 kV. Tags: Through Hole, Buck/Step down. More details for SPX1F12S9 can be seen below.