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3A DC-DC Buck Converter Module 7–26V to 5V Fixed Output – Step-Down Power Supply for ESP32, Arduino, Pi – NZ Tech Projects & DIY Electronics

3A DC-DC Buck Converter Module 7–26V to 5V Fixed Output – Step-Down Power Supply for ESP32, Arduino, Pi – NZ Tech Projects & DIY Electronics

Product code: DCBUCK-3A-5V-NZ
Regular price $4.99 NZD
Regular price Sale price $4.99 NZD
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A compact 3A 5V fixed-output buck converter module, commonly used to power 5V devices (like ESP32, Arduino, sensors) from a higher voltage source such as a 12V battery, 9V wall adapter, or solar panel.

DC-DC Step-Down (Buck) Converter Module
. It is designed to convert a higher DC voltage (7V to 26V) down to a fixed 5V DC output. The module is rated for up to 3A of current.

The 3A DC-DC Buck Converter Module 7–26V to 5V Fixed Output is also known as a step-down regulator board, 5V power module, 3A buck converter, DC-DC 5V power supply.

Perfect for powering your microcontroller projects in NZ:

  • Stable 5V @ 3A output keeps voltage drop minimal for Arduino, ESP32, Raspberry Pi.
  • Wide 7–26V input lets you run from 12V batteries, solar setups, or 24V systems.
  • High efficiency (≈96%) ensures low heat and longer runtime
  • Compact PCB footprint perfect for tight builds and portable applications.
  • Built-in thermal & over-current protections safeguard your device.

Features of the 3A DC-DC Buck Converter Module 7–26V to 5V Fixed Output:

  • Fixed 5V output at up to 3A
  • Wide input range: 7–26 V DC
  • Mini PCB size: ~22 × 17 × 4 mm
  • ~96% efficiency, low heat
  • SS34 Schottky diode and inductor-based design
  • Marked IN+/IN– and OUT+/OUT– solder pads
  • Thermal shutdown and over-current protection
  • Operating temperature: −20 °C to +85 °C
  • Ideal for battery, solar, and vehicle power sources

⚠️ Limitations

  • Fixed 5V output — cannot adjust voltage
  • No USB port — requires soldering to connect
  • Not waterproof — install inside an enclosure
  • Thermal dissipation is needed under sustained 3 A loads
  • No internal fuse — external protection advised
  • CAUTION: This product is intended for hobbyist, educational, and general-purpose electronics use only. It is not designed or certified for use in medical, life-support, life-sustaining, safety-critical, or hazardous environments such as hospitals, emergency systems, coal mines, oil depots, or similar high-risk applications. Techexpress NZ does not recommend or warrant its use in any application where failure could result in injury, loss of life, or significant property damage.
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3A DC-DC Buck Converter Module 7–26V to 5V Fixed Output – Step-Down Power Supply for ESP32, Arduino, Pi – NZ Tech Projects & DIY Electronics
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