The Bel SRBC-10E1Ax is part of the non-isolated DC-DC converter series. The modules use a SMT package. These converters are available in a range of output voltages from 0.75 ~ 3.63 VDC over a wide range of input voltage (Vin = 4.5 ~ 14 VDC). The efficiency is typically 93% at 3.3 VDC at output at full load.