A current regulator diode, also known as a constant current diode or current limiting diode, is a semiconductor device that maintains a constant current flow regardless of the applied voltage. It is primarily used to provide a stable current source in various applications. The symbol for a current regulator diode is similar to a standard diode symbol, with the addition of two arrows pointing away from the diode element. These arrows indicate that the diode acts as a current source, regulating the current passing through it. The current regulator diode is commonly employed in LED circuits, voltage references, and current-dependent biasing applications.
Also, see the complete list of Electrical and Electronics Engineering Symbols here.
The figure below displays the current regulator diode symbol:
