The IRH-12/21-W80NB-C from Murata is a DC to DC Converter with Input Voltage 16 to 160 V, Output Voltage 1 12 V, Output Current 1 21000 mA, Output Power 250 W, Isolation Voltage 4242 V. Tags: Through Hole, Buck/Step down. More details for IRH-12/21-W80NB-C can be seen below.