ACST1010-7FP

Overview

The ACST1010-7FP is an overvoltage protected AC switch featuring Triac structure with integrated crowbar technology. It operates in a TO-220FPAB insulated package rated for 1500 V rms insulation voltage. The device supports an on-state RMS current of 10 A and withstands repetitive peak voltages up to 700 V. Gate triggering current (IGT) is specified at a maximum of 10 mA, enabling direct MCU interfacing. It provides high static dV/dt immunity of 200 V/µs minimum and clamps transient line surges up to 2 kV per IEC 61000-4-5 standards.

Feature Summary

• Integrates overvoltage crowbar technology to absorb inductive turn-off energy and clamp transients without external protection components
• Provides high noise immunity compliant with IEC 61000-4-4 fast transient standards
• Features low gate triggering current allowing direct drive from microcontrollers via simple gate resistors
• Utilizes planar technology for high off-state reliability and stable performance under harsh conditions

Applications

• AC mains static switching in home appliance control systems
• Driving universal motors in washing machine drums
• Compressor control for refrigerators or air conditioning units

Procurement Notes

Verify the specific ordering code ACST1010-7FP against the manufacturer's official documentation to confirm the exact package type and sensitivity class. Ensure that the procurement channel sources genuine STMicroelectronics products to guarantee compliance with the specified electrical characteristics and environmental ratings defined in the datasheet.

Selection Notes

Select this component when designing circuits requiring robust overvoltage protection for AC loads up to 10 A. The low gate current requirement simplifies driver circuit design compared to standard Triacs. Consider the thermal resistance values provided for the TO-220FPAB package when calculating heat dissipation requirements for continuous operation at elevated case temperatures.

Part Context

This device belongs to the ACS/ACST power switch family built with Application Specific Discrete (A.S.D.) technology. It is designed specifically for home appliances and industrial systems where high reliability and simplified protection schemes are required. The series includes variants with different gate sensitivities to accommodate various control logic levels.

Replacement Considerations

Direct replacements within the same family include the ACST1035-7FP, which offers higher gate sensitivity (35 mA). For non-insulated applications, the TO-220AB packaged versions such as ACST1010-7T may be considered if insulation requirements differ.