The Bel SRPE-12E1A0 is part of the non-isolated DC-DC converter Power Module series. The modules use a SMD package. These converters are available in a range of output voltages from 0.6 ~ 5.5 VDC over a wide range of input voltage (VIN = 5.5 ~ 13.2 VDC). The efficiency is typically 93% at 3.3 Vout (Vin = 12 VDC) at full load.