The EC4SBW-48S33 from Cincon Electronics is a DC to DC Converter with Input Voltage 18 to 75 V, Output Voltage 1 3.3 V, Output Current 1 4500 mA, Output Power 20000 mW, Isolation Voltage 1500 V. Tags: Through Hole, Boost/Step Up. More details for EC4SBW-48S33 can be seen below.