A certain power diode with n 5 2 is driven with a forward current of 10 A. Immediately after current turn-on, the voltage drop across the diode is found to be 900 mV. However, as temperature rises...

A certain power diode with n 5 2 is driven with a forward current of 10 A. Immediately after current turn-on, the voltage drop across the diode is found to be 900 mV. However, as temperature rises because of internal power dissipation, the voltage decreases and eventually settles to 750 mV. (a) Using the rule of thumb, estimate the junction’s temperature rise. (b) Given that the temperature rise per watt (8CyW) represents thermal resistance, what is the thermal resistance of the present diode in its fi nal state? What happens if another identical diode is connected (c) in series with the existing one? (d) In parallel?