ACST610-8R

Overview

The ACST610-8R is a logic-sensitive gate TRIAC from the ACS series, rated for 800 V off-state voltage and 6 A RMS on-state current. It features a maximum gate trigger current of 10 mA and a holding current of 25 mA. The device operates within a junction temperature range of -40°C to 125°C and offers non-repetitive surge currents of 45 A at 50 Hz and 47 A at 60 Hz. Packaged in an I2PAK (TO-220AB) surface-mount compatible case, it integrates a high-voltage clamping device to absorb inductive turn-off energy.

Feature Summary

• Integrates a high-voltage clamping device to withstand line transients and absorb inductive turn-off energy
• Logic-compatible sensitive gate design requiring low gate trigger current for efficient control
• Robust construction with overvoltage protection capabilities suitable for AC power switching applications

Applications

• Motor controllers and drivers
• Power management systems
• General AC power switching circuits

Procurement Notes

Verify the specific package designation against official STMicroelectronics documentation, as distribution listings may vary between I2PAK and D2PAK identifiers. Confirm that the selected variant matches the required thermal and electrical specifications for the target application environment. Ensure compliance with RoHS3 standards and check for any specific handling requirements related to the integrated clamping structure during assembly.

Selection Notes

Select this component when designing circuits requiring robust overvoltage protection and high surge capability in a standard through-hole or surface-mount compatible package. The 800 V rating provides sufficient margin for standard AC line voltages, while the 6 A current capacity supports moderate load applications. Consider the I2PAK footprint for thermal dissipation needs compared to smaller packages in the same series.

Part Context

This part belongs to the ACST6 family of overvoltage-protected AC switches manufactured by STMicroelectronics. The series is designed to simplify AC power control designs by integrating protection features directly into the TRIAC structure. Variants such as the ACST610-8GTR offer similar electrical characteristics but differ primarily in packaging format, catering to different manufacturing and thermal management requirements.

Replacement Considerations

The ACST610-8T and ACST610-8FP are confirmed substitutes within the same product family offering identical electrical ratings and functionality. These alternatives provide flexibility in package selection without compromising circuit performance or protection features.