STK412-490-E

Overview

The STK412-490-E is a two-channel shift power supply audio power amplifier hybrid IC manufactured by Sanyo. It integrates Class H amplification technology with a built-in shift power supply circuit to achieve high efficiency and reduced heat generation. The device supports dual-channel operation, delivering up to 150W per channel into an 8-ohm load. Key internal features include thermal protection circuits and short-circuit protection to ensure reliable performance in high-power audio applications.

Feature Summary

• Integrates Class H amplification architecture for enhanced energy efficiency
• Includes built-in shift power supply circuitry to minimize thermal dissipation
• Features integrated thermal and short-circuit protection mechanisms

Applications

• High-power home audio amplifiers
• Professional sound reinforcement systems
• Commercial PA equipment

Procurement Notes

Verify the manufacturer origin as Sanyo Semiconductor or Panasonic, noting that Sanyo's semiconductor division was acquired. Confirm the suffix '-E' denotes specific environmental compliance or packaging variations if required by your Bill of Materials. Ensure the component matches the original pinout and thermal pad configuration for direct replacement in existing PCB layouts.

Selection Notes

Select this component when designing audio systems requiring high output power with improved thermal management compared to standard Class AB designs. The shift power supply feature makes it suitable for applications where heat sink size constraints exist. Verify input sensitivity and supply voltage requirements align with the system's pre-amplifier stage and power supply capabilities before integration.

Part Context

This part belongs to the STK412 series of hybrid amplifier ICs from Sanyo. The series is characterized by its use of shift power supply technology to reduce power consumption and heat. Other variants in the family, such as the STK412-430, offer different power ratings or specifications, but share the same fundamental architectural approach to efficient audio amplification.

Replacement Considerations

Cross-reference models include the STK412-490E. Verify compatibility with alternative suppliers if Sanyo parts are discontinued, ensuring the replacement maintains the same pinout, thermal characteristics, and protection circuit functionality.