SST08B-800C

Triacs Overview

The SST08B-800C is a standard triac manufactured by SMC Diode Solutions, designed for general-purpose AC power control applications. It features an 800 V off-state voltage rating and supports an RMS on-state current of 8 A. The device is housed in a TO-220B through-hole package, suitable for high-power thermal management. Key electrical characteristics include a maximum gate trigger current of 50 mA and a hold current of 60 mA. It operates within a junction temperature range of -40°C to 125°C, providing reliable performance in industrial and commercial switching environments.

Triacs Feature Summary

• High-voltage blocking capability with 800 V off-state rating
• Robust 8 A RMS on-state current handling
• Through-hole TO-220B package for efficient heat dissipation
• Standard triac configuration for bidirectional AC control

Triacs Applications

• Industrial motor speed control systems
• Resistive load heating regulation
• Lighting dimmer circuits
• Solid-state relay (SSR) output stages

Triacs Procurement Notes

Verify the specific suffix 'C' corresponds to the TO-220B package variant when sourcing replacements. Confirm that the required gate trigger current specifications align with the driving circuit's output capabilities. Ensure thermal design accounts for the 8 A RMS rating under continuous operation conditions to maintain junction temperatures within the specified -40°C to 125°C range.

Triacs Selection Notes

Select this component for applications requiring moderate power handling with robust thermal performance via through-hole mounting. The 800 V rating provides sufficient margin for standard industrial AC line voltages. Consider the 50 mA gate trigger requirement when designing the control interface, ensuring the driver can supply adequate current for reliable turn-on without excessive power loss.

Triacs Part Context

This part belongs to the SST series of triacs from SMC Diode Solutions, focusing on medium-power AC switching solutions. The SST08B-800C specifically targets applications needing higher voltage tolerance than lower-rated variants while maintaining compatibility with standard TO-220B PCB footprints. It serves as a discrete alternative to integrated SSR modules where cost-effective, customizable power control is required.

Triacs Replacement Considerations

SST08B-800B is a related variant but is marked obsolete; verify availability and package equivalence if considering it as a substitute. Ensure any replacement maintains the 800 V voltage rating and 8 A current capacity to avoid derating issues in existing designs.