# What is the cut in voltage of Ge and Si diode?

0.2V.

## What is the cut off voltage for silicon and germanium?

The cut off voltage is the voltage only after which the semiconductors conduct, the cut off voltage for silicon is 0.7V in the sense the silicon diode will conduct only when voltage is more than 0.7V and 0.3 for germanium.

Why is the cut in voltage of silicon and germanium different?

Germanium diode also works similarly to Si diode, but the difference is Germanium has low forward voltage, which results in it being a low power loss and an efficient diode. 01. Silicon transistor has threshold voltage of 0.7V, whereas Germanium has 0.3V. 02.

What is the cut in voltage of Si diode?

0.7V
This silicon diode requires 0.7V to start the forward biasing and this is known as the cut in voltage.

### What is the breakdown voltage of germanium?

This is why many textbooks simply say the voltage drop across a conducting, semiconductor diode remains constant at 0.7 volts for silicon and 0.3 volts for germanium.

### What is the cut in voltage?

Cut in voltage (Knee voltage): The voltage at which the forward diode current starts increasing rapidly is known as the cut in voltage of a diode. The cut in voltage is very close to the barrier potential. Cut in voltage is also called as knee voltage.

What is the cut in voltage of GE and Si diodes?

The significant operational difference between a Si diode and a Ge diode is that Si diodes have a knee voltage of 0.7V needed to allow current flow and Ge diodes have an operational voltage of 0.3V to allow current flow. Why Si is used than Ge in semiconductor diode?

What is the knee voltage of a Si diode?

The forward voltage at which a significant amount of current starts flowing through the diode is the knee voltage of the diode. For Si it’s value is around 06V-0.7V. The knee voltage of a diode is approximately equal to the barrier potential.

#### What should the voltage of a diode be?

Consequently, the voltage of the diode, vD, is extremely small (ideally zero). With the diode’s voltage at a value of zero, the circuit simplifies as illustrated in Figure 1.3 (C) and thus the output voltage, v0, will be equivalent to that of the input voltage.

#### What makes an ideal silicon diode cut off?

An ideal diode that is reverse-biased, or operates in the reverse direction, is said to be “cut off” or just “off”. However, if there is a positive current (which is also relative to the direction of voltage flow indicated) being applied to the ideal diode, there is zero voltage drop across the diode.