PAM8403 5V 2×3W Stereo Class-D Audio Amplifier Module
₵15.00
The PAM8403 5V 2×3W Stereo Amplifier Module is a compact and efficient Class-D audio amplifier capable of driving two 4Ω to 8Ω speakers. Ideal for DIY speakers, MP3 players, Bluetooth audio projects, portable electronics and embedded sound applications.
- 2×3W Stereo Output
- 5V Powered
- Class-D Efficiency
- Compact Design
Best For: Mini speakers, DIY audio, MP3 players and portable projects
50 in stock
The PAM8403 5V 2×3W Stereo Class-D Audio Amplifier Module is a compact and highly efficient audio amplifier designed for small stereo speakers, portable audio systems and DIY electronics projects. It provides separate left and right audio channels and can deliver up to 3W per channel when operated from a 5V supply with suitable 4Ω speakers.
The module uses the PAM8403 Class-D amplifier IC, offering high efficiency with low heat generation. This makes it suitable for battery-powered and USB-powered projects where compact size and low power consumption are important. Under normal operating conditions, no external heatsink is required.
It accepts a standard analogue stereo audio input, making it suitable for use with Bluetooth audio receivers, MP3 modules, FM radio modules, computers, phones and other analogue audio sources.
This version does not include an onboard volume-control potentiometer. Volume can therefore be controlled from the connected audio source or by adding an external stereo potentiometer.
The amplifier uses a bridge-tied load (BTL) output configuration, meaning each speaker must be connected directly across its corresponding positive and negative output terminals. The speaker negative outputs must not be connected to ground or joined together.
The PAM8403 is a practical choice for students, makers and hobbyists building compact audio systems, talking projects, alarm systems, portable speakers and embedded sound applications.
Technical Specifications
| Specification | Details |
|---|---|
| Amplifier IC | PAM8403 |
| Amplifier Type | Class-D |
| Number of Channels | 2-channel stereo |
| Supply Voltage | 2.5V–5.5V DC |
| Recommended Supply | 5V DC |
| Maximum Output Power | Up to 3W × 2 |
| 3W Output Condition | 5V supply, 4Ω load, approximately 10% THD |
| Supported Speaker Impedance | 4Ω–8Ω |
| Audio Input | Analogue stereo |
| Output Configuration | BTL – Bridge-Tied Load |
| Maximum Efficiency | Up to approximately 90% |
| Volume Control | External/audio-source controlled |
| Cooling | No external heatsink normally required |
| Protection | Short-circuit and thermal protection |
| Typical Application | Mini and portable stereo audio systems |
Applications
- DIY Bluetooth speakers
- Portable stereo speakers
- MP3 player projects
- FM radio projects
- Arduino audio projects
- Robotics sound systems
- Alarm and notification systems
- Talking electronic projects
- Educational audio circuits
- Battery-powered audio devices
- Embedded sound systems
Package Includes
1 × PAM8403 5V 2×3W Stereo Class-D Audio Amplifier Module
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