physics help

Question

3.2. a diode works at a room temperature of 30 degrees Celsius with a forward voltage drop of 0,015V when a forward current of 20mA flows. Calculate the saturated reverse current.

Answer 1

Step 1:

The forward voltage drop is

The forward bias current is .

Room Temperature .

Absolute temperature .

The ideal law of diode : .

is the forward bias current.

is the reverse saturation current.

q  is the absolute value of the electron charge = 1.60217657 × 10^-19 c.

V_f  is the forward voltage drop.

k  is the Boltzmann's constant = 1.3806488 × 10^-23 m² kg s^-2 K^-1

T  is the absolute temperature.

 is the ideality factor.

Let us consider the diode to be made up of silicon then .

The reverse saturation current .

Solution:

The reverse saturation current .