DurchbruchZenerspannung

DurchbruchZenerspannung, also known as Zener breakdown voltage, is a critical parameter in the operation of Zener diodes, a type of semiconductor device designed to operate in the reverse breakdown region. This phenomenon occurs when the reverse voltage across the diode reaches a specific value, known as the Zener voltage (Vz), causing a sudden increase in current flow. This behavior is distinct from the avalanche breakdown seen in regular diodes, where the breakdown voltage is much higher and the current increase is less controlled.

The Zener breakdown voltage is determined by the doping levels and the width of the depletion region within the diode. It is typically specified in the datasheet of the Zener diode and is crucial for its application in voltage regulation circuits. In these circuits, the Zener diode maintains a constant voltage across it, regardless of changes in the supply voltage or load current, by dissipating the excess voltage as heat.

Zener diodes are widely used in various electronic applications, including voltage regulators, surge protectors, and reference voltage sources. Their ability to maintain a stable voltage makes them indispensable in many electronic devices, from simple circuits to complex systems. However, it is important to note that the Zener breakdown voltage can be affected by factors such as temperature and the current flowing through the diode, which must be considered in the design and operation of circuits using Zener diodes.