The SPAN02B-03 from Mean Well is a DC to DC Converter with Input Voltage 18 to 36 V, Output Voltage 1 3 V, Output Current 1 0 to 500 mA, Output Power 2000 mW, Operating Temperature -40 to 90 Degree C. Tags: Through Hole, Buck/Step down. More details for SPAN02B-03 can be seen below.