The MHFS34809 from Cosel is a DC to DC Converter with Input Voltage 18 to 76 V, Output Voltage 1 9 V, Output Current 1 0.33 A, Output Power 2970 mW, Isolation Voltage 4200 Vdc. Tags: Through Hole, Buck/Step down. More details for MHFS34809 can be seen below.