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Breakdown voltage is a parameter of a diode that defines the largest reverse voltage that can be applied without causing an exponential increase in the leakage current in the diode. Exceeding the breakdown voltage of a diode, per se, is not destructive; although, exceeding its current capacity will be.
The reverse breakdown voltage of a diode is one electrical property that depends heavily on doping and material properties in the semiconductor. Here’s how to calculate the breakdown voltage of a diode like this simple pn diode.
Jun 3, 2020 · A properly doped PN junction diode that works even in the Breakdown region is called a Zener diode. Zener diode is also known as the breakdown diode or breakdown voltage of diode. This diode works on either the Zener breakdown mechanism or on the Avalanche breakdown mechanism.
Once the voltage exceeds VRWM, it approaches the breakdown voltage (VBR), which is defined as the voltage where current through the diode exceeds 1mA (Figure 1). Figure 1. Logarithmic I-V Curve of an ESD Diode with vRWM And vBR.
When the voltage reaches a high negative value known as the breakdown voltage, V BR , the diode starts to conduct in the reverse direction. At breakdown, the current sharply increases and becomes very high in the negative direction. A breakdown voltage V BR of − 50 V is typical of ordinary diodes.
- GMB, Perhaps but it will take some time. On its current trajectory this website is still in the early parts of what would be considered Electrical...
- Yes, the diode and resistor share the same current. The goal of the graphical solution is to find points on both the diode curve and resistor curve...
- Hello Dzifa, Sure, as a rule increasing the voltage on a semiconductor will cause more current. It's hard to give a more precise answer: Yes: forwa...
- Yes. This would be an example of what is called a III-V semiconductor (named after the column's of the Periodic Table. These semiconductors are use...
- Not necessarily. Damage happens if too much heat is generated. If you can control that, the diode survives. A type of diode called the Zener diode...
- You do use the diode equation: i = Is (e^(qv/kT)−- 1) so for v=0, i = Is (e^0 - 1) = 0
- Hello Jay, You certainly can. BUT you must select an appropriate resistor to limit the diode current. Without a proper resistor the diode will be d...
- Choosing a material to make transistors is a balancing act. You want to modify the material (add impurities) to get a wide spectrum of semi-conduct...
- Hello GMB, The heart of the diode is a PN junction made of highly refined silicon (with a few controlled impurities). This link may help: https://e...
- Liquid crystal diodes block light. Light emitting diodes emit it.
corresponding voltage at which is occurs is called the breakdown voltage (Vb) as shown on Figure 7. (The graph shown on Figure 7 does not represent the characteristics of a real diode. It is presented for the visual demonstration of the breakdown region only.) For silicon diodes the breakdown voltage is in the range of 50-200 Volts. Care must ...
Zener diodes have a well-defined low reverse breakdown voltage by design. A typical value for the breakdown voltage is for instance 6.2V. This means that the voltage at the cathode can never be more than 6.2V higher than the voltage at the anode, because the diode will break down, and therefore conduct, if the voltage gets any higher.
