☑ Diode Characteristics Equation

H is the exponential ideality factor. T is the absolute temperature in kelvin.

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Pn junction diode is widely known for passing the electric current solely in one direction.

Diode characteristics equation. I the net current flowing through the diode. Diode current can be expressed by an equation called diode current equation. The current equation depend on dark saturation current the charge of an electron externally applied a voltage and a constant.

Later he gives a corresponding equation for current as a function of voltage under additional assumptions which is the equation we call the shockley ideal diode equation. The shockley ideal diode equation or the diode law is derived with the assumption that the only processes giving rise to the current in the diode are drift due to electrical field diffusion and thermal recombinationgeneration rg. In this equation two parameters require to be discussed in quite detail.

V applied voltage across the terminals. The diode equation gives an expression for the current through a diode as a function of voltage. Shockley derives an equation for the voltage across a p n junction in a long article published in 1949.

The ideal diode law expressed as. One of the most common applications of the diode is the pn junction. Diode current equation expresses the relationship between the current flowing through the diode as a function of the voltage applied across it.

This pn junction can be used to operate and implement the functions of a diode because it can conduct considerable current in the forward direction and roughly no current in the reverse direction. I0 dark saturation current the diode leakage current density in the absence of light. We also provide a calculator for the diode current equation.

The amount of current flowing through the pn junction diode greatly depends on the type of material used and also depends on the concentration of doping in the fabrication of pn diode.