Temperature Dependency of zener diode

by Jhead   Last Updated October 10, 2019 00:19 AM

I wanted to study the effect of temperature change on diode characteristics. I used a 1N4739A 9.1 V Zener diode for that and connected it in reverse bias. Since the meter is not that sensitive to measure leakage current, I increased the voltage above 9 volt to breakdown region. Introducing a heat source to the vicinity of the diode, the current starts decreasing. How do we explain that behaviour? The diode resistance is supposed to decrease with increase in temperature right?

Tags : self-study

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