The PSA481-9IR from Bel Fuse is a DC to DC Converter with Input Voltage 58 to 144 V, Output Voltage 1 48 V, Output Current 1 1000 mA, Output Power 48000 mW, Operating Temperature -40 to 71 Degree C. Tags: Through Hole, Buck/Step down. More details for PSA481-9IR can be seen below.