The QM48T50018-NBB0G from Bel Fuse is a DC to DC Converter with Input Voltage 36 to 75 V, Output Voltage 1 1.8 V, Output Current 1 50000 mA, Output Power 90000 mW, Operating Temperature -40 to 85 Degree C. Tags: Through Hole, Buck/Step down. More details for QM48T50018-NBB0G can be seen below.