220Vac to 3.3Vdc 3W Ultra-Compact Power Module (HLK-PM03)

Overview

Power your embedded projects directly from the mains with the HLK-PM03, an ultra-compact 3W AC-DC converter that transforms 100-240Vac into a stable 3.3Vdc output. This module is engineered for space-constrained applications where size and reliability are critical. Its encapsulated design ensures safety and longevity, making it perfect for smart home devices, industrial automation, and instrumentation.

Key Features

• Ultra-Compact: Small footprint saves valuable PCB space.
• Wide Input Range: Accepts 100-240Vac AC, 50-60Hz, suitable for global use.
• Stable Output: Provides a regulated 3.3Vdc output with up to 1A current (3W).
• High Efficiency: Minimizes energy loss and heat generation.
• Encapsulated Design: Offers protection against dust, moisture, and physical damage.
• Safety Certified: Meets international safety standards for peace of mind.
• Easy Integration: Simple pin connections, no external components required.

Technical Specifications

| Parameter | Value | |-----------|-------| | Input Voltage | 100-240 Vac | | Input Frequency | 50-60 Hz | | Output Voltage | 3.3 Vdc | | Output Current | 1 A | | Output Power | 3 W | | Efficiency | >70% | | Isolation | 3000 Vac (input to output) | | Operating Temperature | -25°C to +70°C | | Dimensions | 33.7 x 22.0 x 17.0 mm (approx.) | | Weight | 20 g (approx.) |

Applications & Use Cases

• Smart home devices (smart switches, sensors, hubs)
• IoT gateways and microcontrollers (ESP32, Arduino)
• Industrial automation and control systems
• Instrumentation and measurement equipment
• LED lighting drivers
• Battery chargers and power adapters

What's Included

• 1x HLK-PM03 220Vac to 3.3Vdc 3W Power Module

Compatibility

• Works with any device requiring a 3.3V DC power supply up to 1A.
• Perfect for powering Arduino, ESP8266, ESP32, Raspberry Pi Pico, and other microcontrollers.
• Can be used in conjunction with buck/boost converters for other voltage needs.

MOKWN Recommendation

This module is a must-have for any maker or engineer looking to power their projects directly from the mains without bulky transformers. Its compact size and reliability make it ideal for commercial products as well as hobbyist projects. We recommend it for applications where space is at a premium and a stable 3.3V supply is required.