ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：TRIAC SENS GATE 800V 4A DPAK
- Series：ASD™
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Triac Type：Logic - Sensitive Gate
- Voltage - Off State：800 V
- Current - On State (It (RMS)) (Max)：4:00 AM
- Voltage - Gate Trigger (Vgt) (Max)：1 V
- Current - Non Rep. Surge 50, 60Hz (Itsm)：30A, 33A
- Current - Gate Trigger (Igt) (Max)：10 mA
- Current - Hold (Ih) (Max)：20 mA
- Configuration：Single
- Operating Temperature：-
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：DPAK
- Grade：-
- Qualification：-
Download product information
Overview
The ACST4-8SB-TR is a single-channel logic-sensitive gate TRIAC manufactured by STMicroelectronics, designed for surface-mount applications in the DPAK (TO-252-3) package. It features an 800 V blocking voltage and supports a maximum RMS on-state current of 4 A. The device requires a low gate trigger current with a maximum Igt of 10 mA and a maximum Vgt of 1 V. Non-repetitive surge currents are rated at 30 A for 50 Hz and 33 A for 60 Hz frequencies. The holding current maximum is specified at 20 mA. This component belongs to the ASD™ series and complies with RoHS3 standards.
Feature Summary
- Integrates a high-voltage clamping device to absorb inductive turn-off energy and withstand line transients per IEC 61000-4-5 standards.
- Features logic-level gate sensitivity allowing direct drive from microcontrollers with minimal gate current requirements.
- Provides high electrical noise immunity against fast transient bursts as defined by IEC 61000-4-4.
Applications
- Driving loads up to 4 A in home appliances
- Actuating water valves and drain pumps
- Industrial systems requiring sensitive gate control
Procurement Notes
Verify the specific ordering suffix to confirm the tape and reel packaging configuration, as indicated by the TR designation. Confirm the component status, as official records may list this part number as discontinued or obsolete. Ensure the selected variant matches the required DPAK package dimensions and thermal characteristics for the target PCB layout.
Selection Notes
Select this component when a surface-mount TRIAC with integrated overvoltage protection is required for 800 V circuits. The low gate trigger current makes it suitable for direct microcontroller interfacing without additional driver circuitry. Consider the 4 A RMS rating and DPAK thermal performance for the expected load conditions and ambient temperature constraints.
Part Context
This device is part of the ACST4 series within the ACS/ACST power switch family. These switches utilize Application Specific Discrete (ASD) technology to provide enhanced reliability and built-in protection against voltage transients. The series is engineered to simplify circuit design by eliminating the need for external MOVs or snubber networks.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs if considering alternative models from the same manufacturer or other vendors.
