ACST1210-7GTR

Overview

The ACST1210-7GTR is a single-phase triac from STMicroelectronics, part of the ACST12 series utilizing ASD technology. It features an integrated overvoltage crowbar for line transient protection and high noise immunity. The device supports a maximum RMS on-state current of 12 A with a repetitive peak off-state voltage of 700 V. Key electrical parameters include a maximum gate trigger current of 10 mA, a holding current of 25 mA, and a junction temperature range of -40°C to +125°C. It is housed in a D2PAK surface-mount package.

Feature Summary

• Integrates a Triac structure with a high-voltage clamping device to absorb inductive turn-off energy and withstand line transients per IEC 61000-4-5 standards.
• Requires low gate current (IGT < 10 mA) for activation while maintaining high electrical noise immunity compliant with IEC 61000-4-4.
• Employs planar technology to ensure high off-state reliability without requiring external overvoltage protection components.

Applications

• Home appliance motor control
• Industrial system load driving
• AC-DC power supply inrush current limitation

Procurement Notes

Verify the specific suffix 'GTR' against the manufacturer's official documentation to confirm tape-and-reel packaging and RoHS compliance status. Ensure the component matches the exact 700V rating variant within the ACST12 family, as other suffixes may indicate different voltage or current specifications.

Selection Notes

Select this component when designing circuits that require robust transient suppression and high dV/dt immunity without external snubbers. The low gate drive requirement simplifies interface with logic-level controllers. Verify that the 12A RMS current rating and 700V blocking voltage align with the specific load and supply conditions of the target application.

Part Context

This part belongs to the ACST12 series, which utilizes Application Specific Discrete (ASD) technology. The series is designed to replace standard TRIACs by integrating protection features directly into the silicon die, thereby reducing the bill of materials and improving system reliability in residential and industrial environments.

Replacement Considerations

The ACST1235-7 is listed as a similar alternative within the same product family, offering higher gate trigger current but potentially different sensitivity characteristics. Verify functional equivalence regarding gate drive requirements before substitution.