ACST830-8T

Overview

The ACST830-8T is a standard triac from the ACS/A.S.D. family, manufactured by STMicroelectronics. It features an 8 A RMS on-state current and an 800 V repetitive peak off-state voltage. The device utilizes a TO-220-3 through-hole package with a maximum junction temperature of 125 °C. Key electrical parameters include a maximum gate trigger voltage of 1 V, a maximum gate trigger current of 30 mA, and a holding current of 30 mA. Non-repetitive surge currents are rated at 80 A or 84 A depending on frequency.

Feature Summary

• Standard triac configuration for general-purpose AC switching applications
• Compliant with RoHS 3 and REACH environmental standards
• Single-channel configuration suitable for phase angle control

Applications

• General purpose AC switching circuits
• Phase angle control functions in residential appliances
• Industrial systems requiring medium current triac solutions

Procurement Notes

Verify the specific suffix 'T' to confirm the TO-220 tube packaging variant. Ensure the design accommodates the 125 °C maximum junction temperature limit. Confirm compliance requirements against RoHS 3 specifications before finalizing component selection for production.

Selection Notes

Select this model when an 8 A RMS current rating and 800 V blocking voltage are required in a through-hole format. Compare against the ACST830-8FP if insulated mounting is necessary. Verify that the 30 mA gate trigger current aligns with the driving circuit capabilities.

Part Context

This component belongs to the ACS/A.S.D. power switch family designed for home appliances and industrial systems. It serves as a medium-current solution for AC loads, distinct from the high-voltage clamping ACST8 series or the Snubberless T-series devices.

Replacement Considerations

ACST830-8GTR (Surface Mount DPAK), ACST830-8FP (Through-Hole Insulated), T835T-8T (Snubberless Through-Hole). Verify pinout compatibility and thermal resistance differences before substitution.