Question

The emitter current and the base current of a npn BJT are 1.46 mA and 14.46 uA
respectively. Calculate the
saturation current Iz if Vee = 0.7 V.
(a) 10-15 A
(b) 1.01x10-15 A
(c) 1474.5x10 A
(d) 14.46x10" A​

Answer 1

Calculating the saturation current

Step-by-step explanation:

For a BJT

Given-

emitter current Ie=1.46 mA

base current Ib=14.46 uA

Vee=0.7 V

Saturation current=?

Ie=Ib+Ic

Ic=Ie-Ib=1.46mA-14.46 uA

Ic=1.44 mA

Ic=Isat[1-e^Vbe/Vt]

Isat=Ic(e^-Vbe/Vt)

Isat=1.44 mA (6.914x10^-13)=0.101x10^-14

Isat=1.01x10^-15 A

Hence the answer is (b) 1.01x10^-15 A