The basic construction of PIN diode involves a heavily doped p and n region. An intrinsic region between p and n region separates them.
During forward biasing a PIN diode behaves like a current controlled variable resistance. In reverse biasing condition, it works like a constant capacitance.
Let’s understand the working of PIN diode in detail:
- Used in attenuators
- Used in photodetectors
- Used as a microwave switch