2EZ8.2D2/TR12

Diodes – Zener – Single

The 2EZ8.2D2/TR12 is a single zener diode, known as a Zener diode because it operates in the Zener breakdown region of a reverse biased diode. They are used for various purposes, with one of the most common being surge protection and voltage regulation. The following will explain the constructor, the application field, and the working principle behind this specific Zener diode.

Constructor

The 2EZ8.2D2/TR12 is a small, single Zener diode that is housed in a SOD123 package. As can be assumed from its name, this diode has a Zenor voltage of 8.2 volts. This diode also has a maximum power rating of 500 mW and a maximum forward voltage drop of 200 mV. These specifications all make the 2EZ8.2D2/TR12 ideal for use in many applications.

Application Field

The most common application for this device is surge protection. The Zener diode, when placed in this orientation, can prevent any voltage above the Zener voltage from entering a circuit or device. It is initially designed to protect circuits from overvoltage transients, such as lightning strikes, but it can also be used to prevent against any unintentional cross-connects in a high-voltage circuit. Another application for this device is as a voltage regulator. By placing the diode in series with the voltage source, a designer can ensure that the voltage supplied to a circuit will not vary more than the Zener voltage. Finally, this diode can also be used as a temperature controlling device. By placing the diode next to a heating element, a designer can regulate the temperature of the element to a certain point by controlling the voltage supplied.

Working Principle

The working principle behind a Zener diode is quite easy to understand. When the diode is placed in a circuit and reverse biased, it is subjected to a large reverse voltage. When this voltage reaches a certain level (which is known as the Zener voltage of the diode) the diode begins to break down by generating a large amount of current. This breakdown current will then flow through the diode and will cause the voltage across it to remain constant, thus creating a voltage regulator.When using the 2EZ8.2D2/TR12, this breakdown current will flow up to a maximum of 200 mA, meaning it can provide more than enough current for most applications. The Zener voltage of this diode is 8.2V, meaning that the voltage applied to the diode cannot be greater than 8.2V in order to prevent any failure. Finally, this diode is also designed to dissipate 500 mW of power, meaning it can handle relatively large amounts of current.

In conclusion, the 2EZ8.2D2/TR12 is a single Zener diode with a Zener voltage of 8.2V, a maximum forward voltage drop of 200 mV, and a maximum power dissipation of 500 mW. It is used for surge protection, voltage regulation, and temperature control, and its working principle is based on Zener breakdown. This diode can be used in many applications, making it one of the most versatile diodes on the market.