ACST4-7CFP

Overview

The ACST4-7CFP is a standard TRIAC manufactured by STMicroelectronics, belonging to the ASD series. It features an 800 V blocking voltage and supports a maximum RMS on-state current of 3 A. The device is housed in a TO-220FP insulated package for through-hole mounting. Key electrical parameters include a maximum gate trigger current of 25 mA and a holding current of 35 mA. Non-repetitive surge currents are rated at 26 A for 50 Hz and 29 A for 60 Hz frequencies.

Feature Summary

• Monolithic construction using planar technology for high reliability
• Integrated heat sink tab for efficient thermal dissipation
• Insulated package design providing enhanced safety isolation

Applications

• Lighting control systems
• Motor speed regulation circuits
• Heating control applications

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm RoHS compliance status and check for obsolescence notices prior to procurement. Ensure packaging specifications match system requirements.

Selection Notes

Select this component based on its 800 V voltage rating and 3 A current capacity. Consider the TO-220FP package for thermal management needs. Verify gate trigger characteristics against the driving circuit capabilities.

Part Context

This part belongs to the ACST4 family of TRIACs from STMicroelectronics. These devices are designed for general purpose AC switching applications requiring robust performance and reliable operation in industrial and consumer electronics environments.

Replacement Considerations

Check for direct pin-compatible replacements within the same ASD series. Verify that alternative components meet identical voltage, current, and package specifications before substitution.