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Product Detailed Parameters
- Description：TRIAC 700V 4A TO220FPAC
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Triac Type：Standard
- Voltage - Off State：700 V
- Current - On State (It (RMS)) (Max)：4:00 AM
- Voltage - Gate Trigger (Vgt) (Max)：1.1 V
- Current - Non Rep. Surge 50, 60Hz (Itsm)：30A, 33A
- Current - Gate Trigger (Igt) (Max)：25 mA
- Current - Hold (Ih) (Max)：35 mA
- Configuration：Single
- Operating Temperature：-30°C ~ 125°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-220-2 Full Pack
- Supplier Device Package：TO-220FPAC
- Grade：-
- Qualification：-
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Overview
The ACST4-7SFP is an AC power switch from the ASD technology family, packaged in TO-220FPAB. It features a Triac structure with integrated high voltage clamping to absorb inductive turn-off energy and withstand line transients per IEC 61000-4-5 standards. The device supports a repetitive peak off-state voltage of 700 V and an RMS on-state current of 4 A at Tc = 100 °C. It offers a non-repetitive surge peak on-state current of 33 A at 60 Hz. Gate triggering current (IGT) is limited to 10 mA maximum at Tj = 25 °C. The component operates within a junction temperature range of -30 °C to +125 °C.
Feature Summary
- Integrates a high voltage clamping device to manage inductive turn-off energy and line transients without external protection components.
- Provides direct interface capability with microcontrollers due to low gate triggering current requirements.
- Ensures high off-state reliability through planar technology construction.
Applications
- AC static switching in appliance control systems
- Driving spray pumps in dishwashers
- Controlling fans in air-conditioners
Procurement Notes
Verify the specific ordering suffix 'FP' confirms the TO-220FPAB insulated package type during procurement. Ensure the 'S' designation matches the required low gate triggering current specification for your controller interface. Confirm that the component's thermal resistance characteristics align with your system's heat dissipation design constraints.
Selection Notes
Select this component when driving loads up to 4 A with high inductance or resistive characteristics. The integrated overvoltage protection eliminates the need for external snubbers or crowbar circuits. Verify that the application environment remains within the specified operating junction temperature limits to maintain performance stability.
Part Context
This part belongs to the ACST4 series, which utilizes Application Specific Discrete (ASD) technology. The series includes variants with different gate sensitivities and packages. The ACST4-7SFP specifically denotes the 700V rating, 4A current capacity, low gate current sensitivity, and TO-220FPAB packaging configuration.
Replacement Considerations
The ACST4-7CB serves as a functional alternative with higher gate current sensitivity (25 mA). Other series members like ACST10 offer higher current ratings but may require different thermal management strategies.
