ACST10-7CT

Overview

The ACST10-7CT is a Triac with overvoltage crowbar technology from the ACS/ACST power switch family. It features an on-state RMS current of 10 A and a repetitive peak off-state voltage of 700 V. The device utilizes application specific discrete (A.S.D.) technology to absorb inductive turn-off energy and withstand transients per IEC 61000-4-5 standards. It offers low gate triggering current options, such as 10 mA or 35 mA, ensuring high noise immunity compliant with IEC 61000-4-4. The component operates within a junction temperature range of -40 °C to +125 °C.

Feature Summary

• Integrates overvoltage crowbar protection to clamp transient voltages without external components
• Provides high static dV/dt immunity for reliable operation in noisy environments
• Features low gate triggering current capability for direct microcontroller interfacing
• Includes UL certified insulation rated at 1500 VRMS in insulated packages

Applications

• AC mains static switching in home appliances and industrial control systems
• Driving universal motors for washing machine drums
• Compressor control for refrigerators and air conditioners

Procurement Notes

Verify the exact ordering code against the manufacturer's official documentation, as suffixes indicate specific package types and sensitivity levels. Confirm that the requested variant matches the required thermal characteristics and insulation ratings for your specific enclosure design. Ensure compliance with environmental directives applicable to your region before finalizing procurement.

Selection Notes

Select the appropriate sensitivity variant based on the driving circuit capabilities; the 10 mA version allows direct MCU connection while the 35 mA version offers higher robustness. Evaluate thermal requirements carefully, as the TO-220FPAB package provides superior heat dissipation compared to the standard TO-220AB. Consider the maximum clamping voltage and surge current ratings when designing for harsh electrical environments.

Part Context

This component belongs to the ACS/ACST power switch family built with A.S.D. technology. It is designed specifically for medium power AC load applications where reliability against line transients is critical. The series integrates both switching and protection functions into a single semiconductor device, simplifying system architecture.

Replacement Considerations

Direct replacements include other variants within the ACST10 series, such as ACST1010-7T or ACST1035-7FP, depending on the required gate sensitivity and package type. Verify pinout compatibility and thermal resistance values when substituting between standard and insulated packages.