What is the range of voltage ratings commonly available in Zener diodes?

The range of voltage ratings commonly available in Zener diodes spans extensive levels, and one of the primary features of Zener diodes is their ability to provide voltage regulation in circuits. While low-voltage Zener diodes can be found, the range includes diodes that can handle higher voltages, up to 200 volts or even beyond. This versatility allows Zener diodes to be used in diverse applications, from low-voltage power supplies to high-voltage regulation scenarios. The availability of Zener diodes within this higher voltage range makes them suitable for various electronic designs necessitating precise voltage reference or regulation under different load conditions.

The other ranges provided in the incorrect options are more limited and do not represent the full capability of Zener diodes in the market, which is why they do not encompass the broader range found in option C. This flexibility is a significant advantage for designers aiming to meet specific voltage regulation needs across different systems.