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Product Detailed Parameters
- Description：TRIAC 800V 12A TO220FPAB
- Series：ACS™/A.S.D®
- Mfr：STMicroelectronics
- Package：Tube
- Triac Type：Standard
- Voltage - Off State：800 V
- Current - On State (It (RMS)) (Max)：12:00 AM
- Voltage - Gate Trigger (Vgt) (Max)：1 V
- Current - Non Rep. Surge 50, 60Hz (Itsm)：100A, 105A
- Current - Gate Trigger (Igt) (Max)：35 mA
- Current - Hold (Ih) (Max)：30 mA
- Configuration：Single
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-220-3 Full Pack
- Supplier Device Package：TO-220FPAB
- Grade：-
- Qualification：-
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Overview
The ACST1235-8FP is an overvoltage protected AC switch belonging to the ACS/ACST power switch family, built with A.S.D. technology. It features a Triac structure and a high voltage clamping device to absorb inductive turn-off energy and withstand line transients per IEC 61000-4-5. The device drives loads up to 12 A RMS at a maximum junction temperature of 150 °C. Key electrical parameters include a repetitive peak off-state voltage (VDRM/VRRM) of 800 V, a gate trigger current (IGT) maximum of 35 mA, and a minimum static dV/dt immunity of 2 kV/µs at 150 °C. It is housed in a TO-220FPAB-insulated package rated for 1500 V RMS insulation.
Feature Summary
- Integrates self-overvoltage protection via a high voltage clamping device to handle inductive spikes and line transients without external components.
- Provides extremely high static dV/dt immunity and robust dynamic commutation capabilities suitable for demanding switching environments.
- Offers enhanced thermal performance allowing operation at a maximum junction temperature of 150 °C.
Applications
- Motor control for home appliances, including washing machine universal drum motors.
- Compressor control for refrigerators or air conditioners.
- Control of resistive loads such as lamps or heating elements.
Procurement Notes
Verify component authenticity by checking the marking code 'ACST1235-8' on the TO-220FPAB package against official STMicroelectronics documentation. Confirm compliance with ECOPACK®2 and RoHS standards through manufacturer certificates. Ensure the specific ordering code matches the required insulated package variant for proper isolation ratings.
Selection Notes
Select this component for applications requiring medium current AC switching up to 12 A with integrated surge protection. It is suitable where high static dV/dt immunity is critical to prevent false triggering. Consider the 150 °C maximum junction temperature for high-thermal environments. Verify that the 800 V blocking voltage meets the system's peak line voltage requirements.
Part Context
The ACST1235-8FP is part of the ACS/ACST power switch family utilizing application-specific discrete (A.S.D.) technology. This series is designed for home appliances and industrial systems, offering a balance of high performance and integrated protection features compared to standard Triacs.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided datasheet. Consult STMicroelectronics technical support for direct replacements or cross-reference options based on specific circuit requirements.
