The TDA2050 is a high-performance Class AB audio amplifier IC capable of delivering high output power with outstanding audio fidelity. Whether you’re upgrading a sound system, repairing subwoofers, or creating a DIY amplifier, this IC is a solid and reliable choice.
With a maximum output of up to 32W, the TDA2050 provides clear, distortion-free sound across a wide frequency range. Its low Total Harmonic Distortion (THD) and built-in safety protections make it suitable for both beginners and professionals looking for powerful yet stable performance in their audio projects.
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
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- Local Stock: Fast and reliable global delivery
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- 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., France
“Great IC for student projects. Easy to wire and reliable output.”
— Alice K., Nigeria
“Arrived fast from Dukatronic and works flawlessly. Will buy again for my second amp build.”
— Joseph N., Singapore
TDA2050 Audio Amplifier IC – Summary
The TDA2050 by STMicroelectronics is a robust, high-fidelity Class AB audio amplifier IC capable of delivering up to 35W RMS output with minimal distortion. Designed for Hi-Fi, car audio, and DIY amplifier projects, it offers excellent sound quality, thermal protection, and a flexible operating voltage range.
With its TO-220 5-pin package, the TDA2050 is easy to integrate into PCB or breadboard circuits, making it ideal for both beginners and experienced audio builders. Whether you’re crafting a compact speaker system or repairing a home amplifier, the TDA2050 ensures reliable, clear, and powerful sound performance.
🛒Get the TDA2050 Audio Amplifier IC on Amazon
Looking to start your next audio project or upgrade your amplifier build? The TDA2050 Audio Amplifier IC from STMicroelectronics is available on Amazon, giving you quick access to genuine, high-performance Class AB amplifier chips trusted by DIYers, technicians, and audio enthusiasts worldwide.
If you are building a Hi-Fi stereo, powered speaker, or subwoofer amplifier, you can easily source authentic TDA2050 ICs with fast delivery and reliable seller support. Many listings even include heatsinks and components for complete amplifier kits — perfect if you want everything you need in one go.
👉 Check the latest price and availability of the TDA2050 amplifier IC on Amazon
🧠 Tip: When ordering from Amazon, look for listings that mention “STMicroelectronics,” “original IC,” or “tested components” to ensure you’re getting a genuine, high-quality amplifier chip.
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