AC-DC 120W High-Voltage Switching Power Supply Module Buck Converter Step Down Module AC220-380V To DC12V/24V Voltage Regulators    Features:  1. Use of high-quality materials, durable  2. Isolation withstand voltage: 3000VAC  3. Output short-circuit, over-current, over-voltage protection  4. Input under-voltage, over-current protection  5. Wide range of use    Specifications:  Voltage range: 176 ~ 500VAC or 249 ~ 707VDC, 100 ~ 176VAC (141 ~ 249VDC) derating 50% use  Frequency range: rated frequency 50/60Hz, working frequency range 47-63Hz  Power Factor: ≥ 0.5  Inrush current (Typ): 70A  Input current: ≤ 1.2A/176VAC  Input power: ≤140W  Standby power consumption: ≤0.6W  Leakage current (Typ.): 0.25mA  Input undervoltage protection: 90-100V  Output overcurrent protection: 110%-177% of the rated output current, hiccup mode, the current drops 105% of the rated output current can be automatically restored  Output overvoltage protection: 110%-130% of the rated output voltage, shutdown output, restart recovery  Output short circuit protection: hiccup mode, short circuit can be automatically recovered after removal  Over-temperature protection: hiccup mode, automatic recovery after temperature drop  Operating temperature, humidity: -25~+ 60°C, 20%~90%RH non-condensing (please refer to the temperature-drop curve)  Storage temperature, humidity: -40~+ 85°C, 10%~95%RH  Temperature coefficient: ±0.03%/9C(0-50°C)  Vibration: 10- 500Hz, 2G 10 minutes/cycle, 60 minutes each for X, Y.Z axis  Safety specification: IEC62368-1  Withstanding voltage: I/P-0/P:3000VAC, I/P-FG:1500VAC, 0/P-FG: 500V; test - -minute, leakage current less than 5mA  Insulation resistance: I/P-O/P, |/P-FG, 0/P-FG:>100M Ohm/500VDC  EMC: CISPR32/EN55032 CLASS B, EN61000-4-2/3/4/6 CLASS B    Caution:  1. All parameters are measured at rated voltage 380V AC input, rated load, ambient temperature 25°C, humidity 70%.  2. Accuracy: including setting error, voltage adjustment rate, load adjustment rate  3. Ripple test: connect power supply and load with 30CM long stranded wire, connect 0.1uF ceramic capacitor and 47uF capacitor to the load, test with 20MHz oscilloscope at the load end  4. Voltage regulation: Under the rated load condition, the input voltage is measured from low to high.  5. Load regulation: measured from 1% load to 100% load of the output under test    Package Included:  High-voltage switching power supply module *1