The R05-100B from Recom Power is a DC to DC Converter with Input Voltage 4.5 to 6 V, Output Voltage 1 41 to 120 V, Output Current 1 50 mA, Output Power 3000 mW, Operating Temperature -40 to 85 Degree C. Tags: Through Hole, Boost/Step Up. More details for R05-100B can be seen below.