Here is the complete e-commerce product listing updated to include a targeted set of relevant product and SEO hashtags for social media, marketplace listings, and search discovery.
Product Title
PAM8403 5V Mini Class-D 2-Channel Stereo Audio Amplifier Module (3W + 3W Output)
Short Key Features (Bullet Points)
High Efficiency Class-D Architecture: Delivers up to 90% efficiency, extending battery life in portable setups while generating minimal heat.
Compact Stereo Output: Produces 3W + 3W dual-channel stereo output with excellent audio clarity (4Ω load at 5V DC).
Flexible 5V Power Supply: Operates on a wide DC voltage range from 2.5V to 5.5V—power it easily via standard USB, power bank, or 1S LiPo battery.
Direct Speaker Drive: Capable of driving 4Ω to 8Ω mini speakers directly without requiring additional external coupling capacitors.
Built-in Circuit Protection: Features thermal shutdown and short-circuit protection for reliable, long-lasting performance.
Ultra-Miniature Design: Extremely compact footprint fits easily into tight DIY electronics, portable speaker builds, and custom audio projects.
Product Overview & Description
The PAM8403 2-Channel Stereo Audio Amplifier Module is a powerful yet ultra-compact Class-D digital amplifier designed for high-quality stereo audio reproduction in space-constrained projects. Delivering up to 6W total power (3W + 3W), this module is an ideal audio driver for DIY portable Bluetooth speakers, custom gaming cabinets, media players, and microcontroller audio projects.
Thanks to its filterless Class-D architecture, the PAM8403 achieves up to 90% energy efficiency, preserving battery life and eliminating the need for bulky heatsinks or external LC filters. The board is equipped with internal thermal and short-circuit protection, ensuring trouble-free, reliable operation even under heavy use.
Whether you are retrofitting small LCD monitors, building custom TV projectors, or crafting custom audio gear, the PAM8403 offers superior low-noise performance, ultra-low EMI, and crisp sound reproduction in a miniature package.
Technical Specifications
Feature / Parameter | Specification |
Amplifier Class | Class-D (Filterless Digital) |
Operating Voltage Range | 2.5V to 5.5V DC (5V Recommended) |
Output Power | 3W + 3W (at 10% THD with 4Ω load @ 5V DC) |
Channel Count | 2-Channel (Stereo Left & Right) |
Supported Speaker Impedance | 4Ω to 8Ω |
Efficiency | Up to 90% |
Operating Temperature | -40°C to +85°C |
Protection Features | Built-in Short Circuit & Thermal Overload Protection |
Quiescent Current | Ultra-Low (Low Power Idle) |
Applications
Portable Bluetooth & Wireless Speakers
DIY Audio Projects & Arduino / Raspberry Pi Audio Amplification
LCD Monitors, TV Projectors & Handheld Game Consoles
Notebook Computers & Desktop Mini Speakers
Portable DVD/Media Players
Connection & Wiring Guidelines
Power Supply (5V & GND): Connect a clean 5V DC supply (USB, regulated adapter, or battery). Do not exceed 5.5V to avoid permanent chip damage.
Audio Input (L, GND, R): Connect your stereo source (3.5mm headphone jack, Bluetooth audio receiver, or MP3 decoder board).
Speaker Output (OUT+ / OUT-): Connect Left and Right 4Ω–8Ω speakers directly.
⚠️ Important Wiring Note: The PAM8403 uses a Bridge-Tied Load (BTL) output configuration. Do not bridge or connect the negative speaker outputs (OUT-) together or connect them to common Ground (GND), as this will damage the module.
Hashtags & Search Keywords
#PAM8403 #AudioAmplifier #ClassDAmplifier #DIYAudio #ElectronicsModule #StereoAmplifier #5VAudioBoard #ArduinoAudio #RaspberryPiProjects #PortableSpeaker #MiniAmplifier #MakerMovement #DIYElectronics #AudioProjects #HardwareHacking
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