Overview
The ACST6-7SG-TR, part of the ACST6 series from STMicroelectronics, is a high-performance AC switch designed with Application Specific Discrete (A.S.D.) technology. This device is suited for home appliances and industrial systems, capable of driving loads up to 6 A. It features a Triac structure along with a high voltage clamping device, which absorbs inductive turn-off energy and withstands line transients as specified in IEC 61000-4-5 standards. The ACST6 switch requires a low gate current (IGT < 10 mA) for activation and exhibits high noise immunity, complying with IEC 61000-4-4 standards for fast transient burst tests.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| On-state rms current (IT(RMS)) | 6 | A |
| Maximum repetitive peak off-state voltage (VDRM/VRRM) | 800 | V |
| Gate triggering current (IGT) | 10 | mA |
| Non-repetitive surge peak on-state current (ITSM) | 47 (60 Hz), 45 (50 Hz) | A |
| Critical rate of rise of on-state current (dI/dt) | 100 | A/μs |
| Operating temperature range | -40 to +150 | °C |
| Insulation voltage (TO-220FPAB package) | 2000 | V RMS |
| Package types | TO-220FPAB, TO-220AB, D2PAK, I2PAK |
Key Features
- Triac with overvoltage protection
- Low gate triggering current (IGT < 10 mA)
- TO-220FPAB insulated package complying with UL standards (file ref: E81734) and insulation voltage of 2000 V RMS
- High noise immunity complying with IEC 61000-4-4 standards
- No external overvoltage protection required
- Reduces the power passive component count
- High off-state reliability with planar technology
Applications
- AC mains static switching in appliance and industrial control systems
- Drive of medium power AC loads such as universal motors in washing machines, compressors for fridges or air conditioners
- Compressor inrush current and high torque operating conditions of AC motors
Q & A
- What is the maximum on-state rms current of the ACST6-7SG-TR?
The maximum on-state rms current is 6 A.
- What is the maximum repetitive peak off-state voltage of the ACST6-7SG-TR?
The maximum repetitive peak off-state voltage is 800 V.
- What is the gate triggering current required for the ACST6-7SG-TR?
The gate triggering current is less than 10 mA.
- What are the package options available for the ACST6-7SG-TR?
The package options include TO-220FPAB, TO-220AB, D2PAK, and I2PAK.
- Does the ACST6-7SG-TR require external overvoltage protection?
No, the ACST6-7SG-TR does not require external overvoltage protection due to its built-in high voltage clamping device.
- What are the typical applications of the ACST6-7SG-TR?
Typical applications include AC mains static switching in appliances and industrial control systems, and driving medium power AC loads such as universal motors and compressors.
- How does the ACST6-7SG-TR handle line transients?
The ACST6-7SG-TR can safely withstand AC line transient voltages by clamping low energy spikes and switching to the on state to dissipate higher energy shocks through the load.
- What is the insulation voltage of the TO-220FPAB package?
The insulation voltage of the TO-220FPAB package is 2000 V RMS.
- Does the ACST6-7SG-TR comply with any specific IEC standards?
Yes, it complies with IEC 61000-4-5 for line transients and IEC 61000-4-4 for fast transient burst tests.
- Can the ACST6-7SG-TR be driven directly by an MCU?
Yes, the ACST6-7SG-TR can be driven directly by an MCU through a simple gate resistor due to its low gate triggering current.
