What components are used to construct a diode?

A diode is a two-terminal electronic component that allows current to flow in one direction while blocking it in the opposite direction. The primary components that make up a diode are the anode and cathode.

When constructing a diode, the anode is the terminal where current enters, while the cathode is where current exits. This structure is critical to the operation of the diode, as it establishes the directionality of current flow. When a positive voltage is applied to the anode relative to the cathode, the diode becomes forward-biased and allows current to pass through. Conversely, if the voltage is reversed, the diode becomes reverse-biased, preventing current from flowing.

Understanding the roles of the anode and cathode helps clarify how diodes are utilized in various applications, such as rectification, signal modulation, and voltage regulation. This knowledge is foundational for working with electronic circuits and components.