SST04K-800SW

Triacs Overview

The SST04K-800SW is a standard Triac manufactured by SMC Diode Solutions, designed for AC power control applications. It features an 800 V repetitive peak off-state voltage and a 4 A on-state current rating. The device is housed in a surface-mount DPAK (TO-252-3) package with a lead-free tin-plated termination finish. Key electrical characteristics include a holding current of 15 mA maximum and a gate trigger voltage range of 0.7 V to 1.5 V. It operates within a junction temperature range of -40°C to 125°C and complies with RoHS standards.

Triacs Feature Summary

• Surface-mount TRIAC configuration optimized for automated assembly processes
• High voltage blocking capability suitable for demanding AC line applications
• Lead-free terminal finish ensuring environmental compliance

Triacs Applications

• AC power control circuits
• Solid-state relay implementations
• Lighting dimmer modules

Triacs Procurement Notes

Verify the specific ordering suffix matches the required packaging format, such as tape-and-reel or cut tape, as indicated in manufacturer documentation. Confirm that the component meets the necessary regulatory requirements for the target market, including RoHS compliance and REACH status. Ensure the selected variant aligns with the thermal management design constraints of the final application.

Triacs Selection Notes

Select this component when a surface-mount TRIAC with high voltage ratings is required for compact designs. The DPAK package offers a balance between current handling capacity and board space efficiency. Consider the thermal resistance of the PCB layout to ensure the junction temperature remains within the specified operating range during continuous conduction periods.

Triacs Part Context

This part belongs to the SST series of TRIACs from SMC Diode Solutions, which are engineered for general-purpose AC switching. The series includes various current and voltage ratings to accommodate different load requirements. The SST04K-800SW specifically targets applications requiring moderate current switching at high voltages in a small form factor.

Triacs Replacement Considerations

Direct substitutes may include other 800V 4A surface-mount TRIACs from manufacturers like Littelfuse or STMicroelectronics, provided the pinout and thermal characteristics are compatible. Verify that alternative parts meet the same voltage and current derating requirements for the specific application environment.