Electronic Devices and Circuits - Engineering

Q1:

What is the correct sequence of the following step in the fabrication of a monolithic, Bipolar junction transistor?
  1. Emitter diffusion
  2. Base diffusion
  3. Buried layer formation
  4. E pi-layer formation
Select the correct answer using the codes given below:

A 3, 4, 1, 2

B 4, 3, 1, 2

C 3, 4, 2, 1

D 4, 3, 2, 1

ANS:D - 4, 3, 2, 1

It is always non-linear.