TE20A1203B01 is an 18W single-output external AC-DC power supply designed for test and measurement and industrial applications. It delivers 12.0V output at 1.50A maximum current with 120mV peak-to-peak ripple and noise, featuring ±1% line regulation and ±5% load regulation for stable performance. The unit accepts universal AC input from 100-240Vac at ±10%, with input current of 0.5A at 115Vac and 0.25A at 230Vac, and includes Class II wall-plug configuration with interchangeable North American blades and a 2.5 x 5.5 x 9.5mm straight barrel connector (center positive). It meets DoE Efficiency Level VI requirements with no-load input power below 0.1W, operates over -20°C to +70°C, provides 4000Vac input-output isolation, and includes comprehensive protection features including overvoltage, overload, and short-circuit protection in hiccup mode. The power supply is approved to EN/IEC/UL 60950-1 2nd Edition Amendment 2, meets EN55022/CISPR22 Class B emissions with 6dB margin, and offers an MTBF exceeding 1,000,000 hours with a 3-year warranty and IP22-rated enclosure.