STK681-320

Overview

The STK681-320 is a hybrid integrated circuit manufactured by onsemi, designed for high-power motor control applications. It integrates two IGBTs and associated driver components into a single module. The device features a robust construction suitable for industrial environments. Key electrical characteristics include a collector-emitter voltage rating of 600V and a continuous collector current capability of 15A at 25°C case temperature. The module utilizes a ceramic substrate for thermal management and electrical isolation. Switching times are optimized for efficient operation in PWM drives. The package type provides mechanical stability and ease of mounting for heat sinks.

Feature Summary

• Integrates dual IGBTs with built-in driver circuitry for simplified system design
• Utilizes direct-bonded copper (DBC) substrate for superior thermal conductivity
• Features low saturation voltage for improved efficiency in power conversion
• Includes internal protection mechanisms against over-current and short-circuit conditions

Applications

• Industrial servo motor drives
• Switched reluctance motor controllers
• High-frequency AC/DC power supplies
• Uninterruptible power supply (UPS) inverters

Procurement Notes

Verify the specific suffix code to ensure compatibility with your thermal interface requirements. Confirm that the operating junction temperature limits align with your system's cooling strategy. Check for RoHS compliance status if required by your manufacturing standards. Ensure proper torque specifications are followed during installation to maintain thermal performance and electrical integrity. Validate gate drive voltage levels against the datasheet recommendations to prevent device damage.

Selection Notes

Select this component when high current density and compact form factor are required for motor control stages. Consider the thermal resistance values to determine appropriate heatsinking solutions. Evaluate the switching speed requirements against electromagnetic interference constraints. Compare the total power dissipation capabilities with your application's duty cycle and ambient temperature conditions. Ensure the gate drive circuit can provide sufficient current to charge the input capacitance rapidly.

Part Context

This part belongs to onsemi's STK series of hybrid modules, which are widely used in power electronics. The series offers various configurations for different voltage and current ratings. These modules are known for their reliability in demanding industrial applications. They replace discrete component assemblies, reducing board space and assembly complexity. The technology leverages advanced packaging techniques for enhanced performance.

Replacement Considerations

Direct replacements may include other 600V 15A dual IGBT modules from manufacturers like Mitsubishi or Fuji Electric. Verify pinout compatibility before substitution. Check equivalent thermal resistance and package dimensions. Ensure gate drive requirements match the new component's specifications. Review switching characteristics to confirm no impact on system efficiency or EMI.