The RQF50J72S5 from Calex Manufacturing is a DC to DC Converter with Input Voltage 43 to 101 V, Output Voltage 1 5 V, Output Current 1 10 A, Output Power 50 W, Isolation Voltage 3 kV. Tags: Through Hole, Buck/Step down. More details for RQF50J72S5 can be seen below.