The BT152-1200TQ is a planar passivated Silicon Controlled Rectifier (SCR) manufactured by WeEn Semiconductor. It has a blocking voltage of 1200 volts, a current rating of 15 Amps, and a gate trigger current of 5 mA. It has a wide reverse-blocking voltage range of 50 to 400 volts, making it suitable for a variety of regulated power applications. The device is encapsulated in a compact, industry standard TO-220 package, making it well-suited for high-density PCB designs. Additionally, its avalanche current capability makes it an ideal choice for power switching circuits.