Which of the following is true about the temperature coefficient or TC of the Zener diode?
(a) For Zener voltage less than 5V, TC is negative
(b) For Zener voltage around 5V, TC can be made zero
(c) For higher values of Zener voltage, TC is positive
(d) All of the mentioned
The question was asked during an interview.
Enquiry is from Zener Diode topic in portion Diodes of Electronic Devices & Circuits