STK433-040N-E

Overview

The STK433-040N-E is a two-channel Class-AB audio frequency power amplifier hybrid IC manufactured by ON Semiconductor. Designed for consumer audio applications, it delivers 40W output per channel into a 6Ω load at 1kHz with 10% distortion. The device supports pin-to-pin compatibility within the STK433 series, allowing integration of higher-power variants like the STK433-060N-E or STK433-130N-E into existing designs. It features a miniature package and includes built-in protections such as standby and mute circuit functionality.

Feature Summary

• Two-channel Class-AB audio power amplification architecture
• Pin-to-pin compatible with other STK433 series models for design flexibility
• Integrated standby and mute circuit support for system control
• Miniature package design optimized for space-constrained consumer electronics

Applications

• Audio power amplifiers in consumer electronics
• Home theater systems requiring multi-channel amplification
• Compact audio equipment utilizing pre-designed application circuits

Procurement Notes

Verify the manufacturer designation, as this component was originally developed by Sanyo Semicon Device and is now distributed by ON Semiconductor. Confirm the specific ordering suffix matches the required RoHS compliance status. Ensure the datasheet version aligns with the April 2013 publication date to guarantee accurate electrical specifications and mechanical dimensions are referenced during procurement.

Selection Notes

Select this component when a two-channel Class-AB solution is required for 6Ω loads. Consider the STK433-060N-E or STK433-130N-E if higher power output is needed while maintaining pin compatibility. Evaluate thermal management requirements based on the recommended operating supply voltage of ±24V for the 6Ω configuration. Verify that the application benefits from the integrated standby and mute features to simplify circuit design.

Part Context

The STK433-040N-E belongs to the STK433 series of hybrid ICs, which offers a range of channel counts and power outputs. This series allows designers to scale power levels from 40W to 150W using pin-compatible parts. The series is characterized by its use in consumer audio applications, providing a balance of performance and compact form factor. Other members include the STK433-060N-E (50W x 2ch) and STK433-130N-E (150W x 2ch).

Replacement Considerations

Direct pin-to-pin replacements within the same series include the STK433-060N-E and STK433-130N-E for increased power. For single-channel applications, the STK404-070N-E may be considered if channel count reduction is acceptable. Verify supply voltage limits before substituting with higher-power variants.