The data sheet of a 1N4728A Zener diode is as follows If the

The data sheet of a 1N4728A Zener diode is as follows If the diode is operating at the maximum power rating P_Dmax and the temperature suddenly increased to 150 degree C; would you say the diode is operating at derated power and why? At what temperatures do you think the diode would stop operating?

Solution

If temperature is increased to 150 C than see from the data sheet give Diode derated above 50 C so. diode is operating at derated power of 6.67 * 10^-3 * 10^2 +1 = 1.667 Watt.

Diode will stop working after 200 degree C given in the data sheet.