The Bel SRPE-06E1A0 is part of the non-isolated DC-DC converter Power Module series. The modules use a SIP 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 91% at 3.3 Vout (Vin = 12 VDC) at full load.