The DMC3H24S3R3 from Calex Manufacturing is a DC to DC Converter with Input Voltage 9 to 36 V, Output Voltage 1 3.3 V, Output Current 1 900 mA, Output Power 3 W, Isolation Voltage 1.5 kV. Tags: Through Hole, Buck/Step down. More details for DMC3H24S3R3 can be seen below.