TE20A4803F01 is a 20W single-output AC-DC external power supply designed for test and measurement and industrial applications. It delivers 48V at 0.42A output with 480mV pk-pk ripple and noise, featuring ±1% line regulation and ±5% load regulation. The unit accepts universal AC input from 100-240Vac (±10%, ±7-63Hz), meets DoE Efficiency Level VI requirements with less than 0.1W no-load input power, and provides comprehensive protection including overvoltage, overload, and short-circuit protection in hiccup mode. With an operating temperature range of -20°C to +70°C, MTBF exceeding 1,000,000 hours, and compliance with EN/IEC/UL 60950-1 safety standards and EN61000 EMC requirements, this power supply is ideal for industrial and test equipment requiring reliable, regulated DC power with minimal emissions.