1
/
of
2
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
Regular price
$4.99 NZD
Regular price
Sale price
$4.99 NZD
Unit price
/
per
Taxes included.
Shipping calculated at checkout.
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.

