HLK-PM03 Hi-Link 3.3V 3W AC to DC Power Supply Module is plastic enclosed PCB mounted isolated switching step-down power supply module. It can supply 3.3V DC from  120V AC – 230V AC and has a power rating of 3 Watt. This makes it perfect for small projects that needs a 3.3 volt supply from mains. There are many advantages for these modules, such as low-temperature rise, low power, high efficiency, high reliability, high-security isolation etc.
This Power Supply Module voltage source is a switching source, so you do not have to worry about fluctuations in voltage grid. It is designed to be mounted on the PCB and is the ideal solution to power pads that you take. It is widely used in a smart home, automation and control, communication equipment, instrumentation and other industries.

Features of HLK-PM03 Hi-Link - 3.3V 3W - AC to DC Power Supply Module :- 

• Ultra-thin, ultra-small
• All voltage input (AC: 90 ~ 264V)
• Low ripple and low noise
• Output overload and short circuit protection
• High efficiency, high power density
• The product is designed to meet the requirements of EMC and Safety Test
• Low power consumption, environmental protection, no-load loss <0.1W

Environmental conditions of HLK-PM03 Hi-Link - 3.3V 3W - AC to DC Power Supply Module :-

• Operation Temperature: -20 to +60°C
• Store Temperature : -40 to +80°C
• Relative humidity : 5 to 95%
• Atmospheric pressure : 80 to106Kpa

Electrical Characteristics of HLK-PM03 Hi-Link - 3.3V 3W - AC to DC Power Supply Module:- 

Input characteristics (test at room temperature 20 ℃).

• Rated input voltage : 100-240VAc
• Input voltage range : 90-264VAc
• Maximum input current : ≤0.2A
• Input current surge : ≤10A
• Maximum input voltage : ≤270VAc
• Enter slow start : ≤50 mS
• Input Low Voltage Efficiency : Vin=110VAc，Output full-load≥69%
• Input High Voltage Efficiency : Vin=220VAc，output full-load≥70%
• Long-term reliability: MTBF≥100，000h
• Load rated output voltage : +3.3±0.1VDc
• Full rated output voltage : +3.3±0.2 VDc
• Short-term maximum output current : ≥1200mA
• The maximum output current for a long time : ≥1000mA
• Voltage Regulation : ±0.2 %
• Load Regulation : ±0.5