DBG Technology Test Engineer Interview Questions and Answers

Semiconductors are materials that have electrical conductivity between conductors and insulators.

• Silicon is the most commonly used semiconductor material

• Other types include germanium, gallium arsenide, and silicon carbide

• Semiconductors can be classified as intrinsic (pure) or extrinsic (doped)

A p-n junction diode is a semiconductor device that allows current to flow in one direction only.

• Consists of a p-type semiconductor and an n-type semiconductor joined together

• When forward biased, allows current to flow easily

• When reverse biased, blocks current flow

• Commonly used in rectifiers, voltage regulators, and signal demodulation

• Examples include 1N4148, 1N4007 diodes