Product Overview – The TDA2003 audio amplifier IC is a 10W power amplifier chip that comes in a TO-220 Package. It is a high-performance audio amplifier IC designed for delivering crisp and clear sound output on car audio systems and DIY audio projects. Capable of outputting up to 10 watts of power, it’s a favorite among electronics hobbyists and technicians looking for a robust, affordable, and efficient amplifier solution.
Whether you’re building a small speaker system or repairing a subwoofer, the TDA2003 offers excellent sound quality with low distortion and high current capability.
Key Features of the TDA2003
- Output Power: Up to 10W into 2Ω load
- Low Distortion: Excellent sound clarity with minimal harmonic and crossover distortion
- Thermal Shutdown: Built-in protection against overheating
- Short Circuit Protection: Safe operation even under fault conditions
- Wide Voltage Range: Operates from 8V to 18V (typical)
- High Current Capability: Delivers up to 3.5A continuous current
- TO-220 Package: Easy to mount on a heatsink for improved thermal management
Technical Specifications
| Parameter | Value |
| Output Power | 6W @ 4Ω, 10W @ 2Ω |
| Supply Voltage | 8V to 18V |
| Continuous Output Current | 3.5A |
| Package Type | TO-220 (Pentawatt) |
| Distortion (THD) | < 0.2% |
| Frequency Response | 40Hz – 15kHz (typical) |
| Thermal Resistance | 3°C/W (junction-case) |
Pinout Diagram
Below is a simplified pinout for the TDA2003 in a TO-220 package
1 – Non-inverting input (+)
2 – Inverting input (−)
3 – Ground (GND)
4 – Output
5 – Vcc (Power Supply)
Typical Circuit Diagram
The TDA2003 can be easily assembled with minimal components:
- Few resistors and capacitors
- DC power supply (8–18V)
- Matching speaker (2–4Ω)
- Optional: heatsink for thermal control
Perfect for anyone building a quick DIY audio amp.
TDA2003 Datasheet
For complete electrical characteristics and design tips, download the official STMicroelectronics datasheet:
Working Principle
The TDA2003 is a Class B/AB amplifier that boosts low-level audio signals to a level that can drive speakers directly. It’s widely appreciated for its balance between performance and efficiency, especially in car radios and compact audio systems.
Applications
- Car Audio Amplifiers
- Portable Radio Amplifiers
- DIY Speaker Projects
- Repairs of small all-in-one subwoofers
- Audio hobbyist experimentation
Tips for Use
- Always mount on a heatsink for higher wattage output.
- Use proper filtering capacitors to reduce hum.
- Avoid reverse polarity to prevent damage.
- Pair with 2Ω to 4Ω speakers for optimal performance.
Personal Note
“I’ve used the TDA2003 many times to repair and build compact amplifiers. It powers small subs and speakers without any hissing or distortion when set up correctly. For a single IC amp, it really shines!”
Why Buy from Us?
- Genuine ICs from trusted suppliers
- Technical guidance on request
- Free schematic and pinout diagrams on request
- Great deals on bulk purchases
Check out more TDA ICs below and remember that the IC is available for same-day delivery in major towns. Countrywide delivery is also supported.
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