SST26Z-800CW

Triacs Overview

The SST26Z-800CW is a standard TRIAC manufactured by SMC Diode Solutions, designed for high-power AC switching applications. It features an off-state voltage rating of 800 V and an on-state RMS current capacity of 25 A. The device utilizes a TO-3P insulated package to facilitate thermal management and electrical isolation from heatsinks. Key electrical characteristics include a maximum gate trigger voltage of 1.3 V. It operates within a junction temperature range of -40°C to 125°C and is classified as a three-quadrant triggering device suitable for robust industrial environments.

Triacs Feature Summary

• High current handling capability with 25 A RMS on-state current rating
• Insulated TO-3P package design enabling direct mounting to heatsinks without additional insulation hardware
• Standard three-quadrant triggering configuration for simplified gate drive circuitry
• Robust 800 V blocking voltage for reliable operation in high-voltage AC systems

Triacs Applications

• Industrial motor speed control systems
• High-power resistive heating element regulation
• Solid-state relay modules requiring high current capacity
• Lighting dimmer circuits for commercial or industrial loads

Triacs Procurement Notes

Verify the specific datasheet revision to confirm exact thermal resistance values and mechanical dimensions prior to PCB layout. Ensure that the selected heatsink interface matches the TO-3P flange specifications provided in the official manufacturer documentation. Confirm compliance with relevant safety standards required for the final equipment assembly.

Triacs Selection Notes

Select this component when an insulated TRIAC is required to simplify thermal management in high-current AC applications. The TO-3P package eliminates the need for separate insulating washers, reducing assembly complexity. Consider the 25 A RMS rating against peak load requirements and ensure adequate heat sinking is available to maintain junction temperatures within safe operating limits during continuous operation.

Triacs Part Context

This part belongs to the SST series of TRIACs from SMC Diode Solutions, which are engineered for general-purpose power control. The SST26Z-800CW specifically addresses applications needing higher current density than smaller packages allow while maintaining electrical isolation. It complements lower-current variants in the same family, offering a balance between performance and mechanical robustness for heavy-duty switching tasks.

Triacs Replacement Considerations

Direct substitutes must match the 800 V voltage rating, 25 A current rating, and TO-3P insulated package form factor. Verify that any alternative component maintains identical pinout configurations and thermal characteristics to ensure compatibility with existing heatsinking solutions and PCB layouts.