The 9-18AB3.3A800 from Acopian Technical Company is a DC to DC Converter with Input Voltage 9 to 18 V, Output Voltage 1 3.3 V, Output Current 1 3.5 to 8 A, Isolation Voltage 0.5 kV, Operating Temperature -20 to 71 Degree C. Tags: Chassis Mount, Buck/Step down. More details for 9-18AB3.3A800 can be seen below.