Sylvania STR387 Rectifier Tube

The Sylvania STR387 is a silicon controlled rectifier (SCR), used primarily in power control and switching applications such as motor drives, industrial controls, and regulated power supplies. Designed for high voltage and current handling, it allows precise control of AC power by switching on at specific points in the waveform. Sylvania's STR-series devices, including the STR387, are known for their ruggedness, reliability, and thermal stability, making them suitable for demanding electrical environments.