The 12S5.200SMT from Calex Manufacturing is a DC to DC Converter with Input Voltage 10.8 to 13.2 V, Output Voltage 1 5 V, Output Current 1 0.2 A, Output Power 1 W, Isolation Voltage 1 kV. Tags: Surface Mount, Buck/Step down. More details for 12S5.200SMT can be seen below.