3EZ39DE3/TR12

Diodes - Zener - Single - 3EZ39DE3/TR12 Application Field and Working Principle

Diodes - Zener - Single - 3EZ39DE3/TR12 is a type of Zener diode, which is a special type of diode that is a unique two-way switch. The 3EZ39DE3/TR12 diode is a 3.6 V diode that features a 300mA maximum power rating and a 0.51Vz max Zener reverse current rating. This diode is mainly used in power supply, voltage regulator and over-voltage protection systems.

Application Field:

Zener diodes are normally used in components or circuits requiring precise control of voltage levels. They are used in many applications such as in electric power supplies to ensure stable output voltage, in power regulators to maintain the input voltage within allowed limits, in voltage clamping circuits to limit the voltage spikes, in power multiplier circuits to match the voltage of one circuit to another, and in battery chargers to provide protection against overcharging the batteries. In addition, Zener diodes are widely used in automotive and communication industries for voltage regulation.

Working Principle:

Zener diodes work on the principle of avalanche breakdown. When a reverse bias voltage is applied to the diode, the free electrons in the semiconductor material gain sufficient kinetic energy and become free to cross the junction, thus creating a hole-positive current through the diode material. When the reverse bias voltage increases beyond a certain level, the electric field strength across the junction increases to a point where the free electrons start to break down the valence bonds. This causes a rapid increase in current, known as an avalanche current. The Zener Voltage (Vz) is the voltage at which the diode enters avalanche breakdown.

The Zener diode is designed to have a wide area of avalanche breakdown, which is why it is widely used as a voltage regulator. In a Zener diode, the voltage across the diode remains nearly constant when the current through it changes. This voltage regulation feature of the Zener diode is used in applications such as power supplies and voltage converters, where a stable output voltage is required.

In conclusion, the Zener diode 3EZ39DE3/TR12 is a special type of diode used for controlling and regulating voltage. It features a 3.6 Volt output, a 300mA max power rating and a 0.51Vz max Zener reverse current rating. The diode is mainly used in power supplies, voltage regulators and over-voltage protection systems.