Description
Professional-Grade Stereo Voltage Amplifier Module
The STK3102III represents the pinnacle of Sanyo’s precision thick-film hybrid technology. As a "Series III" component, it is engineered to serve as a high-gain voltage amplification stage for powerful audio systems delivering 90W to 100W per channel.
This module is highly sought after for restorations of elite vintage Hi-Fi equipment. It features a refined internal architecture that significantly reduces Total Harmonic Distortion (THD) and provides superior thermal stability compared to the standard Series II models.
Key Technical Features:
- Application: Premium voltage amplification for 100W stereo power stages.
- Ultra-Low Distortion: Features an optimized built-in current mirror, achieving an impressive 0.005% THD.
- Configuration: 2-Channel (Stereo) in a ZIP-15/HYB-15 package.
- Voltage Capability: High-voltage dual supply design (Recommended ±50V to ±60V; Maximum ±75V).
- Refined Stability: The Series III circuitry eliminates the need for external midpoint adjustments, ensuring long-term bias stability.
Technician's Note:
Because the STK3102III acts as the driver for the entire power stage, it operates under high voltage. Always discharge power supply capacitors before installation. We strongly recommend testing the main output transistors and emitter resistors before powering up, as a fault in those components is the most common cause of driver IC failure.
Installation Tip: Use high-quality thermal grease and ensure the metal backplate is firmly seated against the heatsink to maintain the low-distortion performance of the "III" series.