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Product Detailed Parameters
- Description：TRIAC 800V 8A D2PAK
- Series：ASD™
- Mfr：STMicroelectronics
- Package：Tube
- Triac Type：Standard
- Voltage - Off State：800 V
- Current - On State (It (RMS)) (Max)：8:00 AM
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Non Rep. Surge 50, 60Hz (Itsm)：80A, 85A
- Current - Gate Trigger (Igt) (Max)：30 mA
- Current - Hold (Ih) (Max)：40 mA
- Configuration：Single
- Operating Temperature：-
- Mounting Type：Surface Mount
- Package / Case：TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Supplier Device Package：D2PAK
- Grade：-
- Qualification：-
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Overview
The ACST8-8CG is an overvoltage protected AC power switch from STMicroelectronics, packaged in a D2PAK. It belongs to the ASD (Application Specific Discrete) family and integrates a Triac structure with a high voltage clamping device to absorb inductive turn-off energy. The device supports an RMS on-state current of 8A at Tcase = 100°C and withstands repetitive peak off-state voltages up to 800V. It features high noise immunity with a static dV/dt greater than 750 V/µs and requires no external overvoltage protection.
Feature Summary
- Integrates a Triac structure with a built-in high voltage clamping device for absorbing inductive turn-off energy
- Provides high noise immunity compliant with IEC standards for fast transient burst tests
- Eliminates the need for external overvoltage protection components
- Reduces overall power passive component count in appliance systems
Applications
- AC static switching in home appliance control systems
- Washing machine bi-rotational induction motor drive
- Induction motor drive for refrigerator or freezer compressors
- Air conditioning compressor motor control
Procurement Notes
Verify the specific package type matches the design requirements, as the ACST8 series is available in TO-220FPAB, TO-220AB, and D2PAK configurations. Confirm that the thermal management strategy aligns with the specified case temperature limits for the 8A rating. Ensure the gate triggering circuitry meets the required current specifications for reliable operation under varying load conditions.
Selection Notes
Select this component for applications requiring robust handling of inductive loads without additional snubber circuits. The integrated avalanche capability simplifies designs by managing line transients directly within the device. Consider the D2PAK package for surface-mount assembly needs while ensuring adequate copper pad area for heat dissipation to maintain performance at higher ambient temperatures.
Part Context
The ACST8-8CG is part of the broader ACST8 series, which includes variants like ACST8-8CFP and ACST8-8CT. These devices share the same core ASD technology and electrical characteristics but differ in packaging. The series is designed for medium-power induction motor drives in household appliances, offering a compact solution for AC switching applications with integrated protection features.
Replacement Considerations
Direct substitutes include other ACST8 series variants such as ACST8-8CFP (TO-220FPAB) and ACST8-8CT (TO-220AB), provided the package form factor is compatible with the PCB layout.
