The TSR 1-4833WI from Traco Power is a DC to DC Converter with Input Voltage 9 to 72 V, Output Voltage 1 3.3 V, Output Current 1 1 A, Operating Temperature -40 to 80 Degree C, Storage Temperature -55 to 125 Degree C. Tags: Through Hole, Buck/Step down. More details for TSR 1-4833WI can be seen below.