The STMicroelectronics BTA40-800B Triac is a high-performance thyristor designed for use in a variety of applications. This device features a 800 V breakdown voltage, 50 mA current rating, 1 W power rating, 1.5 V gate trigger voltage, RD-91 gate trigger current, and 400 A surge current rating. This triac is ideal for use in AC switching, motor control, and other applications requiring high-power switching. The BTA40-800B is designed to provide reliable operation in a wide range of temperatures and is RoHS compliant. This device is also UL recognized and CSA certified. With its high-performance and reliable operation, the STMicroelectronics BTA40-800B Triac is an excellent choice for a variety of applications.