The ESB1850-4-1IP from Ideal Power Ltd is a DC to DC Converter with Input Voltage 9 to 36 V, Output Voltage 1 5 V, Output Current 1 4000 mA, Output Power 20000 mW, Isolation Voltage 1500 V. Tags: Through Hole, Buck/Step down. More details for ESB1850-4-1IP can be seen below.