Description: The BTA40-700B is a TRIAC (Triode for Alternating Current) manufactured by STMicroelectronics. It is a three-terminal semiconductor device that can be used to control the flow of current in an alternating current (AC) circuit. It is a bidirectional device, meaning it can control current in both directions.

Features:
- High blocking voltage of 700V
- High current rating of 40A
- Low on-state voltage drop
- Low thermal resistance
- Low gate trigger current
- High surge current capability
- Low gate trigger voltage
- High commutation capability
- Low dv/dt sensitivity
- High noise immunity
- RoHS compliant

Applications: The BTA40-700B TRIAC is suitable for a wide range of applications, including motor control, lighting control, heating control, and power switching. It is also suitable for use in AC power control circuits, such as dimmers, motor speed controllers, and AC power relays.