SST24B-800CW

Triacs Overview

The SST24B-800CW is a TRIAC manufactured by SMC Diode Solutions, designed for high-power switching applications. It features an off-state voltage of 800V and an RMS on-state current of 25A. The device is housed in a TO-220B package with three leads, suitable for through-hole mounting. It operates across a junction temperature range of -55°C to +150°C. The component is RoHS compliant and classified under ECCN EAR99.

Triacs Feature Summary

• High current handling capability with 25A RMS on-state current rating
• Robust voltage blocking performance with 800V off-state voltage
• Wide thermal operating range supporting demanding environmental conditions
• Standard TRIAC configuration for versatile AC power control

Triacs Applications

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

Triacs Procurement Notes

Verify the specific package variant (TO-220B) matches the PCB footprint requirements. Confirm that the 800V voltage rating aligns with the peak line voltages present in the target circuit design. Ensure thermal management solutions are adequate for the 25A current load to maintain junction temperatures within the specified -55°C to +150°C range during continuous operation.

Triacs Selection Notes

Select this component when high current capacity and robust voltage blocking are required in a through-hole format. The TO-220B package provides superior heat dissipation compared to smaller surface-mount alternatives. Consider the 800V rating for direct mains connection applications where higher voltage margins are necessary for safety and reliability in industrial environments.

Triacs Part Context

This part belongs to the SST series of TRIACs from SMC Diode Solutions, which are engineered for general-purpose phase control. The SST24B-800CW specifically targets applications requiring higher current handling than standard low-power TRIACs. It complements other variants in the family that offer different current ratings or voltage thresholds for diverse power management needs.

Triacs Replacement Considerations

Direct substitutes include SST24A-800CW and SST24B-800BW, which share similar electrical characteristics but may differ in specific packaging dimensions or gate trigger parameters. Verify pinout compatibility and thermal resistance values before swapping to ensure mechanical fit and thermal performance remain consistent.