ACST6-7SG-TR

Overview

The ACST6-7SG-TR is a logic-sensitive gate TRIAC from STMicroelectronics, rated for 700 V blocking voltage and 6 A RMS on-state current. It features a maximum DC gate trigger current of 10 mA and a holding current of 25 mA. The device operates within a junction temperature range of -30°C to 125°C and is housed in a D2PAK surface-mount package. Non-repetitive surge currents are specified at 45 A for 50 Hz and 50 A for 60 Hz frequencies.

Feature Summary

• Integrates a high-voltage clamping device to absorb inductive turn-off energy and withstand line transient voltages compliant with IEC 61000-4-5 standards.
• Features a sensitive gate design allowing direct drive from low-power microcontrollers with gate trigger current below 10 mA.
• Provides high noise immunity with static dV/dt greater than 200 V/µs and snubberless commutating dI/dt capability exceeding 3.5 A/ms.

Applications

• Compressor starter motor circuits in refrigerators and freezers
• Washing machine drum motor control
• Dishwasher pump motor control
• Medium power industrial systems

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or certified partners. Confirm the specific ordering suffix matches the required packaging configuration. Check for end-of-life status as this part may be discontinued. Ensure compliance with RoHS3 directives and REACH regulations before integration into final assemblies.

Selection Notes

Select this component when an overvoltage-protected TRIAC is required for appliance applications. The integrated clamping feature eliminates the need for external MOVs or RC snubber networks. Choose this part for designs needing direct microcontroller interface due to the low gate trigger requirement. Verify thermal management capabilities for the D2PAK package under expected load conditions.

Part Context

This device belongs to the ACST6 series of AC switches built with Application Specific Discrete (ASD) technology. It serves as a rugged alternative to conventional TRIACs for home appliances and industrial systems. The series is designed to drive loads up to 6 A while providing enhanced protection against electrical transients.

Replacement Considerations

The ACST1210-7G is listed as a similar replacement option by STMicroelectronics. Verify pin compatibility and current ratings before substitution.