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Calculate the forward bias current of a Si diode when forward bias voltage of 0.4V is applied, the reverse saturation current is 1.17×10-9A and the thermal voltage is 25.2mV.

Calculate the forward bias current of a Si diode when forward bias voltage of 0.4V is applied, the reverse saturation current is 1.17×10-9A and the thermal voltage is 25.2mV. Correct Answer 9.156mA

Equation for diode current I=I0×(e(V/ηVT)-1) where I0 = reverse saturation current η = ideality factor VT = thermal voltage V = applied voltage Since in this question ideality factor is not mentioned it can be taken as one. I0 = 1.17 x 10-9A, VT = 0.0252V, η = 1, V = 0.4V Therefore, I = 1.17×10-9xe0.4/0.025 -1 = 9.156mA.

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