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Product Detailed Parameters
- Description：TRIAC SENS GATE 700V 6A TO220
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Triac Type：Logic - Sensitive Gate
- Voltage - Off State：700 V
- Current - On State (It (RMS)) (Max)：6:00 AM
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Non Rep. Surge 50, 60Hz (Itsm)：45A, 50A
- Current - Gate Trigger (Igt) (Max)：10 mA
- Current - Hold (Ih) (Max)：25 mA
- Configuration：Single
- Operating Temperature：-30°C ~ 125°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Grade：-
- Qualification：-
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Overview
The ACST6-7ST is a bidirectional triac from STMicroelectronics, designed as an overvoltage protected AC power switch. It features a 700 V repetitive peak off-state voltage and a 6 A RMS on-state current capability when case temperature is maintained at 105 °C. The device utilizes ASD technology to integrate a high-voltage clamping structure for absorbing inductive turn-off energy. Key electrical parameters include a maximum gate trigger current of 10 mA and a static dV/dt immunity greater than 200 V/µs. It operates within a junction temperature range of -40 °C to +125 °C and is housed in a D2PAK surface-mount package.
Feature Summary
- Integrated avalanche-controlled overvoltage protection eliminates the need for external transient suppression components.
- Snubberless commutation capability allows direct switching of inductive loads without additional RC networks.
- Logic-level gate sensitivity enables direct interfacing with standard microcontroller outputs.
Applications
- AC static switching in home appliance control systems
- Induction motor drive actuators for refrigerator and freezer compressors
- Actuator control for dishwasher spray pumps
Procurement Notes
Verify the specific suffix against official datasheets to confirm pinout and thermal characteristics. Confirm RoHS compliance status and check for end-of-life notifications prior to finalizing design-in decisions.
Selection Notes
Select this component for applications requiring integrated surge protection and snubberless operation. Ensure the PCB layout supports the required thermal dissipation for the D2PAK package to maintain the specified 6 A current rating.
Part Context
This part belongs to the ACST6 family of overvoltage protected AC switches. These devices are engineered for robust performance in residential and industrial environments, combining high noise immunity with simplified circuit designs through built-in transient absorption.
Replacement Considerations
The ACST6-7SR is a documented equivalent within the same product family. Verify that the replacement maintains compatibility with the specific thermal and mechanical constraints of the existing assembly.
