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Product Detailed Parameters
- Description：TRIAC 700V 4A DPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- 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：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：DPAK
- Grade：-
- Qualification：-
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Overview
The ACST4-7SB-TR is a logic-level gate AC power switch from the ASD™ family, manufactured by STMicroelectronics. It features a Triac structure with integrated high-voltage clamping for overvoltage protection. The device operates at a repetitive peak off-state voltage of 700 V and supports an RMS on-state current of 4 A in the DPAK package. It has a non-repetitive surge peak on-state current capability of 30 A at 50 Hz and 33 A at 60 Hz. The maximum gate triggering current (IGT) is 10 mA, allowing direct interface with microcontrollers.
Feature Summary
- ASD™ technology integrates a high-voltage clamping device to absorb inductive turn-off energy and withstand line transients per IEC 61000-4-5 standards.
- Logic-level sensitive gate design enables direct drive from microcontrollers without additional level shifting circuitry.
- Planar technology ensures high off-state reliability and eliminates the need for external overvoltage protection components.
Applications
- AC static switching in home appliance control systems
- Spray pump control in dishwashers
- Fan motor control in air-conditioning units
Procurement Notes
Verify the specific ordering suffix '-TR' corresponds to the tape and reel packaging format containing 2500 units per base quantity. Confirm that the 'S' designation indicates the 10 mA gate sensitivity variant suitable for direct logic-level interfacing. Ensure the component matches the DPAK mechanical outline dimensions provided in the datasheet specifications.
Selection Notes
Select this component when driving low-power highly inductive or resistive loads up to 4 A directly from a digital controller. The 700 V rating suits standard AC mains applications requiring rugged transient immunity. Verify thermal constraints against the junction-to-ambient resistance values for the DPAK package under natural convection conditions.
Part Context
This part belongs to the ACST4 series within the ACS/ACST power switch family. It utilizes ASD™ technology to provide a rugged alternative to conventional triacs. The series spans current ratings from 4 A to 16 A and offers various voltage blocking capabilities including 700 V and 800 V options across multiple package types.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer selection guides for cross-reference data regarding similar ASD™ technology devices with compatible voltage and current ratings.
