The 1N4109 is a robust 1W, 12V Zener diode manufactured by CENTRAL SEMICONDUCTOR. Housed in a DO-41 package, this diode is designed for voltage regulation and protection in a wide range of electronic applications. Zener diodes are specifically engineered to maintain a constant voltage across their terminals when reverse biased, making them ideal for voltage stabilization, overvoltage protection, and voltage reference circuits. Supreme Components International is an authorized distributor of CENTRAL SEMICONDUCTOR components, ensuring you receive genuine and high-quality products. The 1N4109 offers reliable performance and is suitable for both hobbyist and industrial applications requiring precise voltage control. Trust Supreme Components International for your electronic component needs.