ACST410-8FP

Overview

The ACST410-8FP is a single-phase bidirectional thyristor from the ACST4 series, designed for AC switching applications. It features an integrated overvoltage protection mechanism to absorb inductive turn-off energy and withstand line transients per IEC 61000-4-5 standards. The device operates with a maximum repetitive peak off-state voltage of 800 V and supports an RMS on-state current of 4 A. It requires a low gate trigger current (IGT) of less than 10 mA, enabling direct microcontroller interfacing. The component is housed in a TO-220FPAB insulated package, providing UL-certified insulation voltage of 2000 VRMS.

Feature Summary

• Integrates a high-voltage clamping device to protect against inductive turn-off energy and line transients without external components.
• Offers high electrical noise immunity compliant with IEC 61000-4-4 fast transient burst test standards.
• Features a low gate trigger current requirement allowing direct drive from microcontrollers.
• Utilizes an insulated TO-220FPAB package that complies with UL standards for enhanced safety.

Applications

• Home appliance motor control
• Industrial system AC load switching
• General purpose AC power control circuits

Procurement Notes

Verify the specific ordering suffix and package variant when sourcing, as manufacturers may update component revisions or packaging formats. Confirm compliance with current environmental directives such as RoHS before finalizing procurement. Ensure the supplier provides authentic documentation matching the STMicroelectronics datasheet specifications to avoid counterfeit risks.

Selection Notes

Select this component for applications requiring robust overvoltage protection and high noise immunity in compact designs. The low gate current specification simplifies driver circuit design by allowing direct MCU connection. Consider the thermal performance of the TO-220FPAB package for heat dissipation requirements in continuous operation scenarios.

Part Context

This part belongs to the ACST4 series within STMicroelectronics' ACS/ACST power switch family. These devices are built using Application Specific Discrete (ASD) technology, optimizing them for reliability in home appliances and industrial systems. The series emphasizes reduced component count by integrating protection features directly into the silicon structure.

Replacement Considerations

Compatible substitutes include other ACST4 series variants such as ACST408-8FP or ACST412-8FP, depending on current rating needs. Cross-reference with ACST310-8FP for similar functionality with different current capabilities. Verify pinout compatibility and thermal characteristics when substituting.