SST20B-600CW

Triacs Overview

The SST20B-600CW is a standard TRIAC manufactured by SMC Diode Solutions, designed for high-power AC switching applications. It features a 600V repetitive peak off-state voltage and an RMS on-state current rating of 20A. The device is housed in a TO-220B package with three leads, providing robust thermal performance for surface or panel mounting. Key electrical specifications include a maximum gate trigger current of 10mA and a holding current of 40mA. It supports non-repetitive surge currents up to 120A at 50Hz. The component 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 20A RMS on-state rating
• Robust thermal management via TO-220B package design
• Standard TRIAC functionality for AC phase control

Triacs Applications

• Industrial motor speed control systems
• High-power resistive heating regulation
• Lighting dimmer circuits for commercial loads

Triacs Procurement Notes

Verify the specific suffix 'CW' against the manufacturer's latest datasheet to confirm pinout and mechanical dimensions, as packaging variations may exist. Ensure the procurement source provides valid RoHS3 compliance documentation. Cross-reference the part number with official SMC Diode Solutions catalogs to distinguish from similar series components like the SST20B-600BW, which may have different availability status or minor specification differences.

Triacs Selection Notes

Select this component when designing circuits requiring reliable switching of AC loads up to 20A at 600V. The TO-220B package is suitable for applications necessitating direct heatsink mounting due to its large thermal footprint. Consider the 120A surge rating for inrush current protection in capacitive or inductive loads. Ensure the gate drive circuit can supply sufficient current to meet the 10mA trigger requirement under all operating temperatures.

Triacs Part Context

The SST20B-600CW belongs to the SST20B series of TRIACs from SMC Diode Solutions, targeting medium-to-high power industrial applications. This series is characterized by its rugged construction and ability to handle significant thermal stress. The TO-220B form factor distinguishes it from smaller surface-mount TRIACs, positioning it for use in larger power modules where heat dissipation is critical for long-term reliability.

Triacs Replacement Considerations

The SST20B-600BW is a related variant within the same product family; however, it is noted as no longer manufactured. Verify if the SST20B-600CW serves as a direct functional replacement in existing designs, ensuring compatibility with existing heatsinking and gate drive requirements.