Thyristors, also known as Silicon Controlled Rectifiers (SCRs), are discrete semiconductor devices employed for power control and switching applications. These devices have three terminals - anode, cathode, and gate - and exhibit unidirectional conduction. Thyristors operate in a latching manner, conducting current only after a triggering signal is applied to the gate. They are widely used in various electronic circuits for controlling high-power loads. The price of Thyristors depends on factors such as the manufacturer, current and voltage ratings, and package type. When purchasing Thyristors, key considerations include the required current and voltage ratings to ensure compatibility with the application. Additionally, check for specific features such as turn-on and turn-off characteristics, gate trigger voltage, and holding current.