Product Overview
Class-AB Monolithic Hi-Fi Power Stage - Pentawatt-5 Vertical Through-Hole
Condition
Unused new old stock (NOS). Staggered 5-lead Pentawatt package with integrated metal mounting tab and clean through-hole pins. Markings legible: ST logo, TDA2050. Sold each.
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Product Overview
STMicroelectronics TDA2050 is a monolithic Class-AB audio power amplifier integrated circuit housed in a 5-lead Pentawatt vertical package. Designed for high-fidelity audio equipment, it delivers up to 35 watts RMS into 4-ohm loads or 32 watts into 8-ohm loads with low harmonic distortion. Internal circuitry incorporates output short-circuit protection and thermal shutdown to prevent overload damage during high-drive operation.
Key Features
- Class-AB monolithic audio power stage in a vertical Pentawatt-5 package
- Output power up to 32 W into 8 ohms and up to 35 W into 4 ohms
- Wide supply voltage range up to ±25 V split rail or up to 50 V single supply
- 5 A internal peak output current limit
- Integrated thermal limiting and output short-circuit protection
- Through-hole mounting with metal tab for direct heatsink attachment
Applications
- Replacing failed output stages in active studio monitors and vintage hi-fi receivers
- Bench-building custom stereo power amplifiers or active subwoofer driver stages
- Driving instrument practice amps and powered monitor speakers for workbench testing
Frequently Asked Questions
What supply voltage does the TDA2050 accept?
The device operates on dual split supplies up to ±25 V or a single supply up to 50 V.
Is the metal mounting tab isolated from the circuit?
No, the Pentawatt metal tab is internally connected to pin 3 (the negative supply rail -Vs). If mounting to a grounded heatsink in a split-supply configuration, an insulating mica or silicone pad with an insulating bushing is required.
How many audio channels does one TDA2050 chip provide?
The TDA2050 is a single mono amplifier channel, so building a stereo output requires two chips.
Before compact digital amp boards took over every project box, the TDA2050 was how you put honest analog muscle into a custom speaker build. Bolt it to a decent heatsink, set your rails, and crank up the volume.
