What is Diode Current Equation?Diode Current Equation DefinitionThe diode current equation expresses the relationship between the current flowing through the diode as a function of the voltage applied across it. Mathematically the diode current equation can be expressed as: I is the current flowing through the diodeI0 is the dark saturation current,q is the charge on the electron,V is the voltage applied across the diode,η is the (exponential) ideality factor.is the Boltzmann constantT is the ab