Hi Link HLK 10M05 5V/10W AC to DC Switch Power Supply Module

Specifications

• Module Type: AC to DC Step-Down Switching Power Supply
• Model: HLK-10M05
• Input Voltage Range: 100V ~ 240V AC (Universal Global Input)
• Output Voltage: 5V DC
• Maximum Output Current: 2000mA (2A)
• Output Power: 10 Watts
• Efficiency & Protection: High efficiency, low power consumption, output overload, and short-circuit protection
• Standby / No-Load Loss: < 0.1W
• Ripple & Noise: Low ripple and low noise output
• Isolation: High-security isolation (Meets UL, CE requirements)
• Operating Temperature: -25°C to +60°C
• Mounting Type: PCB Through-Hole Mount

Applications

• Smart Home Hubs: Powering ESP32 or Raspberry Pi Pico boards directly from wall mains inside light switch gang boxes.
• Industrial Automation: Providing isolated 5V logic power in control panels alongside high-voltage contactors.
• Embedded IoT Devices: Custom sensor nodes that need to plug directly into the grid without external power bricks.
• Instrumentation: Delivering clean, isolated power to measurement circuits.

Unlock New Capabilities

• Past Projects: You likely started by powering your microcontrollers with USB cables, bulky 5V wall adapters, or batteries that need constant replacing.
• The Upgrade: The HLK-10M05 unlocks true professional hardware design. It allows you to build single-board, all-in-one solutions where the high-voltage AC and low-voltage DC circuits live harmoniously on the same custom PCB.
• Effort Level: Intermediate to Advanced. Requires careful PCB design regarding trace spacing (creepage/clearance) for high voltage and strict adherence to electrical safety protocols.

Package Includes:

• 1 x HLK-HLK-10M05 Hi-Link 5V 10W AC to DC Power Supply Module

Frequently Asked Questions (FAQ)

• Does the HLK-10M05 require external capacitors to function?
  It functions on its own, but adding external filter capacitors on the 5V output (e.g., 100uF electrolytic and 0.1uF ceramic) is highly recommended to further reduce ripple for sensitive ADCs.
• Is the output of this module fully isolated from the AC mains?
  Yes, it features high-security isolation meeting UL and CE standards, separating the high-voltage AC from the 5V DC side.
• Can I draw the full 2 Amps continuously?
  While rated for 10W (2A), it is best practice for long-term reliability and thermal management to keep continuous loads around 70-80% of the maximum rating (approx. 1.5A).
• What happens if the output is short-circuited?
  The module has built-in short circuit and output overload protection; it will temporarily cut power and recover once the short is removed.
• Do I need a heatsink for the HLK-10M05?
  No, it is designed for natural air cooling. Just ensure your enclosure has adequate ambient space or venting.
• Can I use this to power a Raspberry Pi 4?
  A Pi 4 requires up to 3A under load. While this outputs 2A and might boot the Pi, it will likely cause under-voltage warnings during heavy processing or WiFi usage.
• Is it safe to use an ESP32 with this module?
  Yes, but the ESP32 requires 3.3V. You must run the 5V output from this Hi-Link module through a 3.3V voltage regulator (like an AMS1117-3.3) before powering the ESP32 chip directly, or connect it to a dev board's 5V/VIN pin.
• What is the standby power consumption?
  The module is highly efficient with a no-load loss of less than 0.1W.
• Are the pins breadboard compatible?
  The pins are relatively thick and designed for direct PCB soldering. Forcing them into a standard breadboard may damage the clips.
• What is the input frequency range?
  It accepts standard 50Hz and 60Hz AC mains power.
• Can it handle 240V AC safely?
  Yes, the global input range is rated comfortably from 100V up to 240V AC.
• Is it waterproof?
  No, it is encapsulated in a plastic casing but is not IP-rated for water resistance. It must be protected within an enclosure.
• Do I need an external fuse on the AC line?
  Yes, adding a slow-blow fuse on the AC Live line on your PCB is a mandatory safety practice to prevent catastrophic failures during grid surges.