The MQB054120-S-P-B50 from Ideal Power Ltd is a DC to DC Converter with Input Voltage 14 to 154 V, Output Voltage 1 12 V, Output Current 1 4200 mA, Output Power 50000 mW, Isolation Voltage 2250 V. Tags: Through Hole, Buck/Step down. More details for MQB054120-S-P-B50 can be seen below.