Question

Reverse collector saturation is greater than Reverse saturation current because of reverse collector saturation __________

(a) Is ideal

(b) Doesn’t include leakage current

(c) They are same

(d) Include avalanche multiplication current which is caused by the collision in collector junction

I had been asked this question during an online exam.

I would like to ask this question from Operating Point of Transistor topic in chapter Transistor Biasing and Low Frequencies of Analog Circuits

Answer 1

Correct option is (d) Include avalanche multiplication current which is caused by the collision in collector junction

Explanation: One of the reasons why reverse collector current exceeds the reverse saturation current is the introduction of avalanche multiplication current in the base collector junction. This happens when high energy electron collides in the lattice it creates more number of electron and thus a greater current. Another major reason is the presence of surface leakage currents flowing in the reverse collector saturation.