Crafted with EdrawMax, this template serves as a handy reference for different diode symbols and their functions. It includes the standard diode symbol for unidirectional current flow, ideal for rectification. The LED symbol indicates its use in emitting light for indicators and displays. Zener diodes regulate voltage, while photodiodes convert light to electrical signals. Schottky diodes offer low voltage drop and high - speed switching, and Gunn diodes generate microwave frequencies. There are also symbols for breakdown diodes, diode vacuum tubes, tube diodes, and four - layer diodes, each with unique applications in voltage regulation, signal detection, or high - power switching. Ideal for electrical engineers, students, or hobbyists working on circuit design projects.