DD4012SA DC-DC Step-Down Buck Converter Module

The DD4012SA Step-Down Buck Converter is a compact, reliable voltage regulator module that accepts a wide DC input range of 5V–40V and steps it down to your choice of regulated output voltages: 3V, 3.3V, 3.7V, 5V, 6V, 7.5V, 9V, or 12V. With a maximum output current of 1A and a tiny SMD footprint of just 18.3 × 10.2 × 6.7 mm, this board is the perfect power management solution for hobbyists, electronics engineers, and DIY project builders.

Whether you're powering microcontrollers, sensors, LED strips, or small computer peripherals, the DD4012SA delivers stable, consistent output voltage with minimal heat generation — making it ideal for embedded systems, breadboard prototyping, and custom electronics builds.

Key Features

Wide Input Range: Accepts DC input from 5V to 40V
Multiple Output Options: 3V, 3.3V, 3.7V, 5V, 6V, 7.5V, 9V, 12V — choose the voltage you need
1A Maximum Output Current: Suitable for a wide range of low-to-mid power applications
Compact SMD Package: 18.3 × 10.2 × 6.7 mm — fits easily into tight spaces
Voltage Regulator Type: DC-DC step-down (buck) converter for efficient power conversion
Applications: Compatible with computers, microcontrollers, Arduino/Raspberry Pi projects, and more
Condition: Brand new

Specifications

Model	DD4012SA
Input Voltage	5V – 40V DC
Output Voltage Options	3V, 3.3V, 3.7V, 5V, 6V, 7.5V, 9V, 12V
Max Output Current	1A
Package Type	SMD Module
Dimensions	18.3 × 10.2 × 6.7 mm
Condition	New

What's in the Box?

1× DD4012SA DC-DC Step-Down Buck Converter Module (output voltage as selected). Note: Pin headers/needle arrangement not included.

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Frequently Asked Questions

Q: What does the DD4012SA DC-DC step-down buck converter module do?

A: The DD4012SA is a voltage regulator module that takes a higher DC input voltage (5V–40V) and efficiently steps it down to a lower, stable output voltage. You can select from output options including 3V, 3.3V, 3.7V, 5V, 6V, 7.5V, 9V, and 12V, making it extremely versatile for powering different electronic components and circuits.

Q: What applications is the DD4012SA suitable for?

A: This compact buck converter module is ideal for computer electronics, Arduino and Raspberry Pi projects, microcontroller power supply, LED driver circuits, battery-powered devices, and any DIY electronics project that requires efficient step-down voltage regulation from a higher voltage source.

Q: Do I need to solder pin headers onto the DD4012SA module?

A: The module comes as an SMD (surface-mount) board. Pin headers or needle arrangements are not included — you will need to source and solder these separately if required for your specific project setup. The board dimensions are 18.3 × 10.2 × 6.7 mm.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.