Although most of the AC-DC functions are integrated within the PFE series, some external components are required for it to function. These components include: input fuse, inrush limiting resistor, EMI filtering, and input/output storage capacitors. The PFE’s metal base plate can easily mate with a heat sink or a cold plate for conduction cooling. Included protective features are over-current, over-voltage and over-temperature protections. The PFE series meet the PFC specifications.