The VTX-224-051-1512 from Vigortronix is a DC to DC Converter with Input Voltage 13.5 to 16.5 V, Output Voltage 1 9 V, Output Current 1 11 to 111 mA, Output Power 500 mW, Isolation Voltage 1000 V. Tags: Surface Mount, Buck/Step down. More details for VTX-224-051-1512 can be seen below.