STK433-040GN-E

Overview

The STK433-040GN-E is a two-channel Class-AB audio power hybrid integrated circuit designed for high-fidelity audio amplification. It delivers an output power of 40 watts per channel into a 6-ohm load with 10% total harmonic distortion at 1 kHz. The device supports operation with load impedances ranging from 4 to 6 ohms and includes built-in protection features such as thermal shutdown and short-circuit tolerance, allowing for a maximum load shorting duration of 0.3 seconds. It operates within a recommended supply voltage range suitable for standard consumer audio applications.

Feature Summary

• Pin-to-pin compatible with other models in the STK433 series, facilitating design flexibility across varying power requirements.
• Miniature package construction reduces overall system footprint while maintaining robust thermal performance.
• Integrated standby and mute circuit support allows for seamless integration into pre-designed application architectures.

Applications

• Audio power amplifiers
• Consumer electronics audio systems

Procurement Notes

Verify the specific suffix 'GN' against official ON Semiconductor documentation to confirm pinout and electrical equivalence with the standard 'N' variant. Ensure the component source is authorized to guarantee authenticity, as hybrid ICs are sensitive to handling and counterfeit risks. Cross-reference the datasheet revision date to confirm current manufacturing status and availability constraints.

Selection Notes

Select this component when a compact, dual-channel solution is required for mid-power audio applications. It serves as a direct replacement for lower-power variants in the same family, offering a balance between size and output capability. Consider the thermal management requirements associated with its miniature package when designing the host PCB layout.

Part Context

This part belongs to the STK433 series of hybrid audio power amplifiers originally developed by Sanyo and now managed by ON Semiconductor. The series offers a range of power outputs from 30W to 150W per channel, sharing a common form factor and interface to simplify product line expansion and maintenance for manufacturers.

Replacement Considerations

The STK433-040N-E is the primary equivalent within the series. Other series members like the STK433-060N-E or STK433-100LF may be considered if higher power is needed, provided the mechanical and thermal constraints allow.