STMicroelectronics

TDA7851A

TDA7851A Description

The TDA7851A from STMicroelectronics is a high-performance Class AB quad audio amplifier IC designed for automotive and high-fidelity audio applications. With a robust 8V to 18V supply voltage range, it delivers 75W per channel at 2Ω, making it ideal for driving high-power speaker systems. Packaged in a 27FLEXIWATT through-hole format, this amplifier combines efficiency with reliability, meeting ROHS3 and REACH compliance standards. Its Moisture Sensitivity Level (MSL) 1 rating ensures durability in varied environmental conditions, while its EAR99 and HTSUS 8542.33.0001 classifications facilitate global distribution.

TDA7851A Features

• High Output Power: Delivers 75W x 4 channels @ 2Ω, enabling loud and clear audio reproduction.
• Wide Supply Range (8V–18V): Suitable for automotive and industrial applications with fluctuating voltages.
• Class AB Topology: Balances efficiency and audio fidelity, minimizing distortion.
• Robust Packaging: 27FLEXIWATT through-hole design ensures mechanical stability and heat dissipation.
• Compliance: ROHS3, REACH Unaffected, and MSL1 certified for environmental and reliability standards.
• Low Noise & High SNR: Optimized for premium audio performance in demanding environments.

TDA7851A Applications

The TDA7851A excels in:

• Automotive Audio Systems: Powers in-car entertainment systems with high output and thermal resilience.
• Aftermarket Amplifiers: Upgrades factory-installed audio setups for enhanced sound quality.
• Home Audio & PA Systems: Suitable for multi-channel amplifiers in home theaters or public address systems.
• Industrial Audio Equipment: Reliable performance in rugged environments with wide voltage tolerance.

Conclusion of TDA7851A

The TDA7851A stands out as a versatile, high-power audio amplifier for professional and automotive applications. Its Class AB design, wide voltage range, and 75W/channel output make it superior to lower-power alternatives, while compliance with global standards ensures broad usability. Whether for upgrading car audio or building robust industrial sound systems, the TDA7851A delivers durability, clarity, and power efficiency in a single package.