The TMV 1503SHI from Traco Power is a DC to DC Converter with Input Voltage 13.5 to 16.5 V, Output Voltage 1 3.3 V, Output Current 1 0.303 A, Output Power 1 W, Isolation Voltage 5.2 kV. Tags: Through Hole, Buck/Step down. More details for TMV 1503SHI can be seen below.