What is the typical current-voltage characteristic of a diode in reverse bias? (

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Question: What is the typical current-voltage characteristic of a diode in reverse bias? (2019)

Options:

Correct Answer: Very small reverse saturation current

Exam Year: 2019

Solution:

In reverse bias, a diode exhibits a very small reverse saturation current until breakdown occurs.

What is the typical current-voltage characteristic of a diode in reverse bias? (2019)

What is the typical current-voltage characteristic of a diode in reverse bias? (2019)

Step 1: Understand what reverse bias means. This is when the positive side of the voltage source is connected to the n-type material of the diode and the negative side is connected to the p-type material.
Step 2: In reverse bias, the diode does not conduct electricity like it does in forward bias. Instead, it blocks current flow.
Step 3: There is a very small amount of current that flows in reverse bias, called reverse saturation current. This current is usually negligible.
Step 4: If the reverse voltage increases beyond a certain point, the diode can reach a breakdown voltage, where it starts to conduct a large amount of current in the reverse direction.
Step 5: After breakdown, the diode can be damaged if the current is not controlled.

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