AMS1117-3.3V Voltage Regulator 1A SOT-223

Fixed 3.3V linear voltage regulator delivering up to 1A current in a compact SOT-223 surface-mount package for Arduino, ESP32, and electronics projects.

The AMS1117-3.3V is a fixed-output linear voltage regulator designed for electronics projects that require a stable 3.3V power supply. Delivering up to 1A of output current, this regulator is well-suited to powering microcontrollers, sensors, and logic circuits in Arduino, ESP32, and Raspberry Pi Pico projects.

This regulator accepts a higher input voltage and provides a steady 3.3V output with good line and load regulation. The SOT-223 surface-mount package keeps board space to a minimum while providing adequate thermal performance for typical low-to-moderate current applications.

Techexpress NZ supplies this regulator as a single unit, suitable for prototyping, breadboard testing with breakout boards, or integration into custom PCB designs. As with all voltage regulators, ensure your input voltage, current requirements, and thermal conditions are within specification before commissioning.

Key Features

• Fixed 3.3V output: Delivers a stable 3.3V rail for microcontrollers, sensors, and logic circuits.
• Up to 1A output current: Supports moderate-current loads including ESP32, Arduino, and peripheral modules.
• SOT-223 surface-mount package: Compact footprint for space-constrained PCB designs.
• Wide input voltage range: Accepts higher voltages (check Datasheet for exact limits) and regulates down to 3.3V.
• Linear regulation: Low noise output suitable for analog sensors and sensitive logic circuits.

Compatibility

• Compatible with standard 3.3V logic devices including Arduino (3.3V variants), ESP32, ESP8266, and Raspberry Pi Pico.
• Suitable for use with breadboard breakout boards designed for SOT-223 voltage regulator modules.
• Works with standard PCB footprints for AMS1117-3.3 SOT-223 packages.

Important Compatibility Note
This is a surface-mount device (SMD) in a SOT-223 package. It is not a through-hole component. If you require a through-hole regulator, consider the TO-220 package variant. For breadboard prototyping, use a breakout board or pre-assembled module rather than soldering this SMD part directly.

Applications

• Arduino and ESP32 project power supplies, DIY electronics, prototype PCBs, sensor circuits, logic level power rails, battery-powered devices, embedded systems

Technical Specifications

• Product Type: Linear voltage regulator
• Package: SOT-223 surface-mount
• Mounting Type: Surface mount (SMD)
• Output Voltage: 3.3 V fixed
• Maximum Output Current: 1 A
• Model: AMS1117-3.3
• Quantity: 1 piece
• Applications: Arduino, ESP32, DIY electronics, prototype PCBs, sensor circuits

What's Included
• 1 × AMS1117-3.3V voltage regulator (SOT-223 package)

*Does not include: breakout board, heatsink, capacitors, or PCB. TECHEXPRESS NZ LIMITED is neither affiliated with nor approved by Arduino, Espressif Systems, or Raspberry Pi. All trademarks and brand names are the property of their respective owners, and any use of these names is solely for descriptive purposes.

Also Known As AMS1117 3.3V, AMS1117-3V3, 3.3V fixed regulator, SOT-223 voltage regulator, 3.3V 1A regulator, AMS1117 linear regulator.