The CC3-1203SR-E from TDK Corporation is a DC to DC Converter with Input Voltage 12 V, Output Voltage 1 3.3 V, Output Current 1 800 mA, Output Power 3000 mW, Operating Temperature -40 to 85 Degree C. Tags: Through Hole, Buck/Step down. More details for CC3-1203SR-E can be seen below.