The TDA2050 is a powerful, monolithic Class AB audio amplifier IC by STMicroelectronics. Designed to deliver exceptional sound clarity and power, it’s ideal for Hi-Fi audio systems, powered speakers, car audio, and educational DIY projects. With up to 35W RMS output, thermal protection, and ultra-low distortion, this IC is a favorite among hobbyists and professionals looking to build or upgrade audio equipment.
Whether you’re building a compact bookshelf speaker or upgrading a home stereo amplifier, the TDA2050 offers a perfect balance between performance, protection, and ease of use. Its wide operating voltage range and compatibility with single or dual power supplies make it extremely flexible for various audio design needs.
The IC comes in a TO-220, 5-pin Pentawatt package, making it easy to mount with standard heatsinks and integrate into your PCB designs. This form factor is popular for audio amplifier circuits due to its durability, thermal efficiency, and wide availability.
Key Features of the TDA2050
Output Power
- Up to 32W (with ±22V dual supply into 4Ω)
- Up to 35W RMS output into 4Ω @ ±18V
- Delivers 50W music power (IEC 268-3 compliant)
Operating Voltage
- ±4.5V to ±25V (dual) or up to 50V single supply
Low Harmonic Distortion
- < 0.05% THD at 1kHz
- 05% typical from 100Hz–15kHz
Signal-to-Noise Ratio
- > 90 dB
Built-in Protections:
- Short-circuit protection
- Thermal shutdown
- Safe Operating Area (SOA) protection
Package
- TO-220 5-pin package (ideal for mounting on heat sinks)
- Easy heatsink mounting with Pentawatt package
Frequency Response
- 20Hz to 20kHz – clean full-range sound reproduction
Slew rate
- 5–8 V/µs
Technical Specifications of the TDA2050
| Parameter | Value |
| Supply Voltage Range | ±4.5V to ±25V |
| RMS Output Power | 35W (4Ω), 32W (8Ω) |
| Music Power | 50W into 4Ω for 1s @ ±22.5V |
| Total Harmonic Distortion | 0.05% typ @ ±22V, 8Ω load |
| Output Peak Current | 5A (internally limited) |
| Slew Rate | 5–8 V/µs |
| Open Loop Voltage Gain | 80 dB |
| Closed Loop Voltage Gain | 30–31 dB |
| Power Bandwidth | 20Hz – 80kHz (-3dB) |
| Thermal Shutdown | 150°C junction temperature |
TDA 2050 Applications
- Hi-Fi stereo systems
- Car audio amplifiers
- Powered speaker builds
- DIY audio kits and school projects
- Subwoofer amplifier modules
- Multimedia sound enhancement
What’s in the Package and How to Use the TDA2050
- 1 × TDA2050 Audio Amplifier IC (TO-220, 5-pin Pentawatt)
- Digital link to PDF datasheet & reference schematics
Below are some usage tips for the TDA 2050 IC…
- Choose a power supply: ±18V to ±22V dual supply is recommended for full performance.
- Use the recommended schematic: Follow the split or single supply application circuit from the datasheet.
- Add proper heatsinking: Ensure good thermal dissipation using a TO-220 compatible heatsink.
- Design a PCB or breadboard circuit with proper grounding and bypass capacitors to avoid oscillation.
- Test with a preamp or audio input, and connect to a speaker rated for 4Ω–8Ω.
Note: Ensure gain is above 24 dB to maintain stability.
TDA 2050 Datasheet
To explore detailed electrical characteristics and application examples, view or download the official STMicroelectronics datasheet via the link ahead… TDA2050 Datasheet PDF
Pinout Diagram and Pin Configuration Table
Below is an image of the TDA 2050…
Here’s a simplified layout and pin configuration of the TDA2050 pins…
| Pin # | Name | Function |
| 1 | Non-Inverting Input | Audio signal input (+) |
| 2 | Inverting Input | Feedback/signal input (−) |
| 3 | V− (Negative Supply) | Connect to −V power rail |
| 4 | Output | Audio output to the speaker |
| 5 | V+ (Positive Supply) | Connect to +V power rail |
Use a proper heatsink to manage thermal dissipation under heavy load.
TDA 2050 Circuit Diagram
A basic mono amplifier circuit using the TDA2050 can be constructed using:
- Input coupling capacitor
- Gain-setting resistors
- Bootstrap capacitor
- Output capacitor and Zobel network
- Power supply decoupling capacitors
Why Buy from Dukatronic?
- Local Stock: Fast and reliable delivery within Kenya
- Tested & Genuine: Quality-assured components – all our ICs are tested before dispatch
- Expert Help: Friendly support for electronics projects
- DIY Kits & Add-ons: Everything you need under one roof
- Receipts & Warranty: Transparent and secure purchase
- Delivery: Fast, affordable delivery countrywide
- Discounts: Bulk discounts available
Personal Note from Eddy
At Dukatronic, I’ve personally used the TDA2050 to build and repair several audio systems, especially compact subwoofers and custom stereo setups. Its performance is consistent and surprisingly powerful when paired with the right components and a solid heat sink.
One of my favorite things about the TDA2050 is how beginner-friendly it is—even first-timers can put together a good-sounding amplifier within an hour!
Customer Reviews
“Super clear sound. Used this for a DIY Bluetooth speaker and the output was amazing!”
— Evans M., Nairobi
“Great IC for student projects. Easy to wire and reliable output.”
— Alice K., Kisumu
“Arrived fast from Dukatronic and works flawlessly. Will buy again for my second amp build.”
— Joseph N., Eldoret
Ready to Amplify?
Whether you’re a hobbyist or a technician, the TDA2050 is a reliable amp IC you’ll want in your toolbox. Order now from Dukatronic and take your audio projects to the next level! You can also head to our IC’s store and peruse more integrated circuits. See more TDA Ics below…
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