Description
High-Fidelity 30W Stereo Power Amplifier Module
The STK4152II is a premium thick-film hybrid integrated circuit manufactured by Sanyo. Designed for split-rail power supplies, this module delivers a crisp 30W + 30W stereo output, making it a favorite for restoring high-quality 1980s receivers and mid-sized integrated amplifiers.
As a "Series II" component, it features an optimized internal current stabilizer for lower harmonic distortion and a built-in muting circuit to eliminate power-on/off "pops."
Key Technical Features:
- Output Power: 30W + 30W (at 8?, THD = 0.4%)
- Configuration: 2-Channel Stereo (18-Pin SIP Package)
- Frequency Response: 20Hz to 50kHz
- Operating Voltage: Recommended ±27.5V (Absolute Maximum ±42V)
- Compatibility: Pin-compatible with the STK4102II and STK4101V series.
Installation & Safety:
This IC must be mounted to a clean, flat heatsink using high-quality thermal silicone grease. Because the STK4152II generates significant heat during 30W operation, ensuring a tight thermal bond is critical to prevent internal transistor failure.
Professional Tip: Always check the DC voltage on the audio output pins (10 and 13) after installation; negligible voltage indicates a successful repair.