Power Control Units descriptions： We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. Ac To Dc 5v 3w Step Down Mini Intelligent Household Power Supply Module,. 1.Product Features 1). The Ultra-thin, Subminiature 2). The Full Voltage Input (90 ~ 264 Vac) 3).  Low Ripple and Low Noise 4). Output Overload Short Circuit Protection Function 5). High Efficiency and Power Density 6). Product Design to Meet the EMC and Safety Testing Requirements 7). Low Power Consumption, Green Environmental Protection,  no-load Loss < 0.1 W 8).  100% Load Test 9). Meet the Requirements of UL, CE,   2. Environmental Conditions 1). Working Temperature:  -20- + 60 Celsius 2). Storage Temperature:  -40- + 80 Celsius 3).  Relative Humidity: 5-95% 4). Cooling:  natural Cooling 5). Atmospheric Pressure:  80-106 Kpa 6).  Altitude:  2000m 7). Vibration:  Vibration Coefficient 10 ~ 500Hz, 2G10min / 1cycle, 60min.each Along X, Y, Z Axes   3.Electrical Characteristics (at Ambient Temperature Test) 1). Rated Input Voltage:  100-240 VAc 2). Input Voltage Range:  90-264VAc 3). Maximum Input Current:  0.2A 4). Input Current Surge:  10A 5).  Maximum Input Voltage:  270VAc 6). Enter Slow Start: 50mS 7). Input Low Voltage Efficiency:  Vin = 110VAc, Full Load 69% 8). Input High Voltage Efficiency:  Vin = 220VAc, Full Load 70% 9). Long-term Reliability: MTBF100,000h 10). Load Rated Output Voltage:  + 5 ± 0.1VDc 11). Full Rated Output Voltage:  + 5 ± 0.2VDc 12). Short-term Maximum Output Current:  1000mA 13). Maximum Output Current for a Long Time:  600mA 14). Voltage Regulation: ± 0.2% 15). Load Regulation:   ± 0.5% 16). Output Ripple and Noise (mVp-p):  50 17). Switch Overshoot Amplitude:  ( Rated Input Voltage, Output Load Plus 10%)  5% VO 18). Output Over-current Protection:  output Maximum Load of 150-200% A. Products number : SOMONO156725