The document describes the features and characteristics of Motorola Thyristor devices, which are designed for high performance full-wave ac control applications requiring high noise immunity and high commutating di/dt. It has a blocking voltage of 800 volts and an on-state current rating of 15 amperes RMS at 80°C. The device has uniform gate trigger currents in three modes and high immunity to dv/dt, with a minimum of 500 V/µs at 125°C. It minimizes the need for snubber networks for protection and is packaged in an industry standard TO-220AB package. The device also has a high commutating di/dt of 9.0 A/ms at 125°C.