Description
Classic 7W+7W Stereo Audio Power Amplifier Module
The STK4352 is a versatile, slim-package thick-film hybrid integrated circuit from Sanyo. Delivering a steady 7 Watts per channel, this 15-pin module was a fundamental component in high-quality tabletop radios, CRT televisions, and compact stereo systems throughout the 1980s and 90s. It is highly valued for its small footprint and reliable analog sound.
Engineered for efficiency, the STK4352 features a streamlined 15-pin SIP configuration that requires minimal external components. Its design is optimized for cost-effective performance while maintaining a low Total Harmonic Distortion (THD) of 1.0% at full power, making it a perfect match for restorations of vintage consumer electronics.
Key Technical Features:
- Continuous Power Output: 7W + 7W (at 8Ω, f = 1kHz, THD = 1.0%).
- Configuration: 2-Channel Stereo in a 15-Pin SIP (Single In-line Package).
- Slim Profile: Low-profile package height of only 25.5mm for compact enclosures.
- Frequency Response: High-bandwidth capability from 40Hz to 50kHz (+0, -3dB).
- Thermal Stability: Capable of operating with substrate temperatures up to 125°C.
- Recommended Supply Voltage: 27V DC (Maximum 39V).
Installation & Safety Guide:
While the STK4352 is a lower-power module, it still generates heat that must be dissipated. It must be securely mounted to a metal chassis or heatsink using high-quality thermal silicone grease. Operating the module without proper thermal coupling—even for a brief test—can lead to localized overheating and permanent internal damage.
Technician's Note: Before installing, verify your power supply voltage is within the recommended 27V range. Always check the external electrolytic capacitors in the output stage, as dried-out capacitors in older gear are a common cause of audio distortion and module stress.