If you apply more current throughout this diode than its current-regulation point, then it fights back simply by reducing more voltage. This diode does not need any biasing & offers good temperature stability.Īs the name suggests, this diode regulates the flow of current throughout it to some highest levels.Its impedance ranges from 20Mega ohms to several kilo-ohms.Peak voltage rating ranges from 50V to 100V.The current ranges from 0.192mA to 5.6mA.Its storage temperature rating ranges from -55 to 200 degrees centigrade.The value of Thermal resistance is 100 C/w.
This diode includes an N-channel JFET transistor where the transistor’s gate terminal is shorted to the source so that it works like a two-terminal current limiter or current source which is equivalent to a voltage limiting Zener diode. The internal structure of the constant current diode is shown below. Constant Current Diode Symbol Constant Current Diode Construction & Working The function of a constant current diode is to provide protection to the circuit from short circuits. The constant current diode symbol is shown below. This diode is also known as the current regulating diode or CRD and the current limiting diode or CLD. The diode which is used to restrict or change the current to the highest value for the device is called a constant current diode or CCD.