A diode has IS = 10−17 A and n = 1.05. (a) What is the diode voltage if the diode current is 70 μA? (b) What is the diode current for VD = 0.1 mV?

(a) The diode voltage,    0.776 V

(b) The diode current, 3.81 x 10⁻²⁰ A

Explanation:

Given;

saturation current in diode, = 10⁻¹⁷ A

nonideality factor, n = 1.05

(a) the diode voltage

Given diode current, = 70 μA = 7 x 10⁻⁶ A

Diode voltage is calculated as;

Where;

is thermal voltage at 25°C = 0.025

b) the diode current for VD = 0.1 mV