SST24B-800BW

Triacs Overview

The SST24B-800BW is a standard TRIAC manufactured by SMC Diode Solutions, designed for high-power switching applications. It features an off-state voltage of 800 V and an on-state RMS current rating of 25 A. The device is housed in a TO-220B through-hole package, suitable for robust thermal management. Key electrical characteristics include a gate trigger voltage of 1.3 V and a gate trigger current of 250 A. It operates within a junction temperature range of -40°C to 125°C and complies with RoHS3 standards.

Triacs Feature Summary

• High current handling capability with 25 A RMS on-state current rating
• Robust voltage blocking with 800 V off-state voltage specification
• Standard TRIAC configuration for general AC power control
• Through-hole TO-220B packaging for effective heat dissipation

Triacs Applications

• Industrial motor speed control systems
• High-power heating element regulation
• Lighting dimmer circuits for commercial loads
• Solid-state relay implementations

Triacs Procurement Notes

Verify the specific suffix 'BW' corresponds to the TO-220B package variant when sourcing replacements. Confirm that the required gate trigger current of 250 A aligns with the driving circuit capabilities. Ensure the application environment stays within the specified -40°C to 125°C junction temperature limits to maintain reliability. Check for RoHS3 compliance requirements if applicable to the final assembly.

Triacs Selection Notes

Select this component when an 800 V blocking voltage and 25 A continuous current are required in a through-hole format. Consider the relatively high gate trigger current of 250 A, which necessitates a driver capable of supplying sufficient gate power. Compare against lower current variants if the load does not exceed 20 A, or higher voltage ratings if transient spikes exceed 800 V. Evaluate thermal resistance requirements based on the mounting surface area available for the TO-220B case.

Triacs Part Context

The SST24B-800BW belongs to the SST24 series of TRIACs from SMC Diode Solutions. This series is engineered for industrial-grade power switching. The 'B' designation typically indicates the specific current and voltage combination within the family, while '800' denotes the 800 V rating. The 'BW' suffix specifies the TO-220B package style, distinguishing it from other form factors like TAB or D2PAK options available in related part numbers.

Triacs Replacement Considerations

Direct substitutes must match the 800 V / 25 A / TO-220B specifications. Verify gate trigger parameters, as variations in IGT can affect drive circuit compatibility. Ensure the replacement maintains the same thermal performance characteristics for the TO-220B housing.