2EZ9.1DE3/TR8 Diodes - Zener - Single Application Field and Working Principle

The 2EZ9.1DE3/TR8 is a 1 watt zener diode for single-setting voltage control applications in automatic voltage regulators and other regulated power supply applications.

Zener diodes are a special type of diode which, unlike a normal diode, can be driven into reverse breakdown and act as a voltage regulator. The breakdown voltage of a Zener diode is fixed, making it ideal for voltage regulation applications. The 2EZ9.1DE3/TR8 is a single-setting Zener diode which provides a highly stable fixed voltage, making it suitable for a range of applications including over-voltage protection for AC mains, voltage reference for systems requiring high accuracy and stability, and as a regulator for low-dropout applications.

The 2EZ9.1DE3/TR8 diode uses an innovative ‘spread-wing’ package which allows for better thermal and electrical performance when compared to conventional packages. This allows for higher operating temperature, higher efficiency, and lower thermal resistance.

The working principle of the 2EZ9.1DE3/TR8 Zener diode is to utilise the regular diode forward current and a minimum of reverse current in order to set the controlled voltage. During normal forward operation a small voltage drop appears across the diode and the current flows through it. When the current is reversed, a small current flows, which is known as the Zener current. This current creates a voltage drop over the diode’s junction. As the voltage continues to increase, the current across the diode increases until the breakdown voltage is reached. This breakdown voltage is the voltage at which the diode’s breakdown voltage is established and maintained.

The 2EZ9.1DE3/TR8 Zener diode is ideal for single-setting voltage control applications, ensuring that the output voltage is regulated accurately and stably. Its innovative spread-wing package ensures it provides superior thermal and electrical performance, allowing for higher efficiency and operation at higher temperatures.