Overview
The ACST6-7SR, produced by STMicroelectronics, is a high-performance AC power switch belonging to the ACS/ACST power switch family. This device is built using Application Specific Discrete (A.S.D.) technology and is designed for use in home appliances and industrial systems. It is capable of driving loads up to 6 A and features a Triac structure with a high voltage clamping device to absorb inductive turn-off energy and withstand line transients as specified in the IEC 61000-4-5 standards.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VDRM / VRRM | 700 | V |
| IT(RMS) | 1.5 A (Tamb = 40 °C, no heat sink) 6 A (Tcase = 105 °C, TO-220AB package) | A |
| ITSM | 45 A (tp = 20 ms) 50 A (tp = 16.7 ms) | A |
| IGT | 10 mA | mA |
| VGT | 1.5 V | V |
| dV/dt | 200 V/µs | V/µs |
| (dI/dt)c | 3.5 A/ms | A/ms |
| Operating Temperature | -30 °C to 125 °C | °C |
| Package | TO-220AB, TO-220FPAB, D2PAK, I2PAK |
Key Features
- Triac with overvoltage protection
- Low gate triggering current (IGT < 10 mA)
- High noise immunity: static dV/dt > 200 V/µs
- Snubberless turn-off commutation: (dI/dt)c > 3.5 A/ms
- High off-state reliability with planar technology
- No external overvoltage protection needed
- Direct interface with microcontroller
- Reduces power component count
- Complies with IEC 61000-4-5 and IEC 61000-4-4 standards
Applications
- AC mains static switching in appliance and industrial control systems
- Drive of medium power AC loads such as:
- Compressor for refrigerators and air conditioners
- Universal motor of washing machine drum
- Induction motor drive actuators for dishwashers, tumble dryers, etc.
- Actuator for thermostats in refrigerators and freezers
Q & A
- What is the ACST6-7SR used for?
The ACST6-7SR is used for AC mains static switching in appliance and industrial control systems, driving medium power AC loads such as compressors, universal motors, and induction motor drive actuators.
- What is the maximum RMS on-state current of the ACST6-7SR?
The maximum RMS on-state current is 6 A with the TO-220AB package at Tcase = 105 °C.
- What is the repetitive peak off-state voltage of the ACST6-7SR?
The repetitive peak off-state voltage (VDRM/VRRM) is 700 V.
- What is the gate triggering current of the ACST6-7SR?
The gate triggering current (IGT) is less than 10 mA.
- Does the ACST6-7SR require external overvoltage protection?
No, the ACST6-7SR does not require external overvoltage protection due to its built-in high voltage clamping device.
- What are the available packages for the ACST6-7SR?
The available packages include TO-220AB, TO-220FPAB, D2PAK, and I2PAK.
- What standards does the ACST6-7SR comply with?
The ACST6-7SR complies with IEC 61000-4-5 and IEC 61000-4-4 standards.
- How does the ACST6-7SR handle AC line transient voltages?
The ACST6-7SR can safely withstand AC line transient voltages by clamping low energy spikes or switching to the on state to dissipate higher energy shocks.
- Can the ACST6-7SR be driven directly by a microcontroller?
- What is the operating temperature range of the ACST6-7SR?
The operating temperature range is from -30 °C to 125 °C.
