## Zener diode temperature coefficient

In this article we explain to you the Zener diode temperature coefficient, the Zener diode is one of the important semiconductor active devices in electronics.

The voltage regulation is the main application of the Zener diode, the temperature coefficient, and voltage had a great role to play because the change in temperature at the Zener diode junction will badly affect the constant voltage process on the Zener diode.

So we explain the effects that happen due to the presence of temperature coefficient at the Zener diode.

## Temperature coefficient of Zener diode

The Zener diodes will also be affected by changes in temperature with their voltage temperature coefficient.

• The temperature coefficient will be usually used to determine the voltage-temperature behavior changes.
• At the Zener diode, the junction temperature will be affected the temperature variation.
• It is due to environmental issues and also heating effects.
• And we have two types of temperature coefficient, which is negative and positive temperature coefficient.
• 0 to 5v Zener diode shows negative temperatures coefficient, which is affected by variation operation current values.
• The negative coefficient is also called the predominant effect.
• And above 5v, the avalanche breakdown becomes predominant and exhibits a positive temperature coefficient.
• The positive coefficient for avalanche breakdown is generally independent of the operating current.
• The 5v diode is useful in temperature-critical applications.

## Zener diode temperature coefficient formula

ΔVZ = VZ x TC x (T1-T0)

VZ = Zener diode voltage at 25˚C

TC = temperature coefficient

T1 = new temperature level

T0 = reference temperature of 25˚C

This formula indicates the change in Zener voltage due to a change in temperature