The TRI 15-1211 from Traco Power is a DC to DC Converter with Input Voltage 9 to 18 V, Output Voltage 1 5.1 V, Output Current 1 3 A, Output Power 15 W, Isolation Voltage 4.2 kV. Tags: Through Hole, Buck/Step down. More details for TRI 15-1211 can be seen below.