The NFC20-48S05-4 is a 20-watt DC/DC converter designed for wide input voltage applications, accepting 36-72VDC input and delivering 5VDC single output with 4000mA maximum current. This converter features a compact 2 x 1.6 x 0.46 inch case without heatsink, achieving a power density of 13.6W/in³, and operates with fixed 200kHz switching frequency and 82% typical efficiency. Key performance characteristics include ±0.5% voltage accuracy, ±0.1% line regulation, ±0.5% load regulation, and 75mV peak-to-peak ripple with 20mV RMS noise. The unit provides overvoltage protection at 125% of output voltage, operates over an extended temperature range of -40°C to +60°C (with -4 option), and includes remote ON/OFF control, synchronization capability, and continuous automatic short-circuit protection. The NFC20-48S05-4 is ideally suited for process control, industrial automation, distributed power systems, and telecommunications applications where reliable, compact power conversion is required.