The TRA 3-2419 from Traco Power is a DC to DC Converter with Input Voltage 21.6 to 26.4 V, Output Voltage 1 9 V, Output Current 1 0.333 A, Output Power 3 W, Isolation Voltage 1 kV. Tags: Through Hole, Buck/Step down. More details for TRA 3-2419 can be seen below.