Where can I get Zener diodes in stock?

Zener Diodes are in stock with same-day shipping at Mouser Electronics from industry leading manufacturers. Mouser is an authorized distributor for many zener diode manufacturers including Central Semiconductor, Diodes Inc, Microsemi, Nexperia, ON Semiconductor, Taiwan Semiconductor, Vishay, & more.

How is a Zener diode used as a voltage regulator?

Zener diode as a voltage regulator: Zener diode is used as a Shunt voltage regulator for regulating voltage across small loads. The breakdown voltage of Zener diodes will be constant for a wide range of current.

How does a Zener diode clip an output waveform?

For example, if we wanted to clip an output waveform at +7.5V, we would use a 7.5V zener diode. If the output waveform tries to exceed the 7.5V limit, the zener diode will “clip-off” the excess voltage from the input producing a waveform with a flat top still keeping the output constant at +7.5V.

When does avalanche breakdown occur in a Zener diode?

Avalanche breakdown occurs both in normal diode and Zener Diode at high reverse voltage. When a high value of reverse voltage is applied to the PN junction, the free electrons gain sufficient energy and accelerate at high velocities. These free electrons moving at high velocity collides other atoms and knocks off more electrons.

What’s the difference between Zener diodes and general purpose diodes?

Zener diodes are manufactured with a great variety of Zener voltages (Vz) and some are even variable. Zener diodes have a highly doped p–n junction. A similar break down is observed in general purpose diodes (which might be quite high), but the voltage and sharpness of the knee is not clearly defined as in Zener diodes.

What’s the difference between Zener and avalanche diodes?

Operation. Zener and avalanche diodes, regardless of breakdown voltage, are usually marketed under the umbrella term of “Zener diode”. Under 5.6 V, where the Zener effect dominates, the IV curve near breakdown is much more rounded, which calls for more care in targeting its biasing conditions.

How does reverse conduction occur in a Zener diode?

Some Zener diodes have a sharp, highly doped p–n junction with a low Zener voltage, in which case the reverse conduction occurs due to electron quantum tunnelling in the short space between p and n regions − this is known as the Zener effect, after Clarence Zener.