The CQB75-300S15 from Cincon Electronics is a DC to DC Converter with Input Voltage 180 to 450 V, Output Voltage 1 15 V, Output Current 1 5000 mA, Output Power 75000 mW, Isolation Voltage 500 to 4200 V. Tags: Through Hole, Buck/Step down. More details for CQB75-300S15 can be seen below.