The STMicroelectronics TRIAC ACST1235-7GTR is a three-terminal, bidirectional, solid-state switch designed for AC switching applications. It is a 700V, 12A device in a D2PAK package. It is a thyristor, which is a type of semiconductor device that is triggered by a current or voltage signal and can switch large amounts of current.

The ACST1235-7GTR is designed for use in AC switching applications such as motor control, lighting control, and power control. It features a low on-state voltage drop, fast switching, and a high surge current capability. It also has a high temperature rating of 175°C, making it suitable for use in high temperature environments.

The ACST1235-7GTR is suitable for a wide range of applications, including motor control, lighting control, and power control. It can be used in a variety of industrial, commercial, and residential applications. It is also suitable for use in automotive applications, such as in electric vehicles.