The 1N978B is a robust 9.1V, 1.5W Zener diode manufactured by CENTRAL SEMICONDUCTOR. Housed in a DO-41 package, this diode is designed for applications requiring precise voltage regulation and overvoltage protection. Zener diodes are crucial components in voltage regulators, surge protectors, and voltage reference circuits. Supreme Components International is an authorized distributor of CENTRAL SEMICONDUCTOR components, ensuring you receive genuine, high-quality products. The 1N978B offers excellent stability and reliability, making it suitable for a wide range of electronic projects and industrial applications. Trust Supreme Components International for all your component needs.