Key Features

✔ Wide Input Voltage Range (85V–265V AC) – Works with any standard AC power source worldwide. ✔ Stable 3.3V DC Output @ 1A (3W Max) – Reliable power for 3.3V microcontrollers and peripherals. ✔ High Efficiency (≥70%) – Low heat generation, energy-saving operation. ✔ Compact & Lightweight – Space-saving design for embedded applications. ✔ Built-in Protections – Overcurrent, overvoltage, and short-circuit protection. ✔ Low Ripple & Noise – Clean power output for sensitive electronics. ✔ UL94-V0 Flame-Retardant Housing – Safe and durable construction. ✔ Easy to Install – Screw terminals for secure wire connections.

Technical Specifications

• Input Voltage: 85V–265V AC (50/60Hz)

• Output Voltage: 3.3V DC (±5%)

• Output Current: 1A (Max)

• Output Power: 3W

• Efficiency: ≥70%

• Ripple & Noise: ≤100mV (Typical)

• Operating Temperature: -40°C to +85°C

• Protections: Overcurrent, Overvoltage, Short-Circuit

• Safety Standards: CE, RoHS Compliant

• Dimensions: 50mm × 28mm × 21mm

• Weight: ~40g

Applications

• 3.3V Microcontroller Power Supply – ESP8266, ESP32, STM32, Raspberry Pi Pico.

• Wireless & IoT Devices – Wi-Fi, Bluetooth, Zigbee modules.

• Sensors & Modules – Low-power sensors, relays, and small displays.

• Embedded Electronics – DIY projects, prototypes, and testing.

• Industrial Control Systems – Low-power automation circuits.

How It Works

The HLK-PM03 converts high-voltage AC mains power into a stable 3.3V DC output using switching regulator technology. Simply connect the Live (L) and Neutral (N) wires to the input terminals and the 3.3V+/GND to your device. The module automatically regulates voltage fluctuations, ensuring a steady power supply.

Package Includes

• 1 × HLK-PM03 3.3V 1A Power Module

• (Optional) Screw terminals / pre-soldered wires

Why Choose the HLK-PM03?

✅ Safe & Reliable – Built-in protections prevent damage to connected devices. ✅ Global Voltage Compatibility – Works with 110V/220V AC power sources. ✅ Energy Efficient – Minimizes power loss for cooler operation. ✅ Plug-and-Play – No complex wiring; ready to use.

Get Yours Today!

Power your 3.3V electronics safely and efficiently with the HLK-PM03 3.3V 1A AC/DC Power Module – the ideal solution for stable, low-voltage power conversion!

🔹 Order now and enjoy hassle-free power for your 3.3V projects! 🔹