2EZ18D/TR8

Introduction

2EZ18D/TR8 is a single Zener diode that is constructed with a low minimum breakdown voltage and low capacitance. It is designed to reduce the noise and improve the performance of applications such as Voltage Clamps, Clamp and Peak Detectors, and Switching Regulators. It has an operating temperature range of - 65°C to 175°C with minimal capacitance changes. The 2EZ18D/TR8 also has a maximum continuous current of 100mA and a Maximum Peak Current of 250mA.

Applications

The 2EZ18D/TR8 can be used in various applications. It can be used as a voltage regulator where the input voltage is regulated by the Zener diode and the output voltage is maintained. In Voltage Clamps, the 2EZ18D/TR8 prevents voltage surges by diverting them away from sensitive components and equipment. It can also be used as a Clamp and Peak Detector, where it decouples high frequency components of a signal by clamping and diverting the voltage to ground and cutting off the unwanted signals.

In Switching Regulators, the 2EZ18D/TR8 is often used as an active switching element where it functions as a MOSFET switch. In this application, the Zener diode holds the output voltage of the switching regulator at a desired level, while the MOSFET switch can be switched on and off to control the amount of power passing through the circuit. Other applications include referenced voltage generators, low dropout voltage regulators, and reverse voltage protection.

Working Principle

The 2EZ18D/TR8 working principle is based on the Zener diode breakdown effect. A Zener diode is a diode that is designed to break down under a specific reverse voltage and conduct current in both forward and reverse directions. When the reverse bias voltage exceeds a certain voltage, the Zener diode breaks down and its internal resistance decreases, allowing it to conduct current in both directions.

The Zener diode breakdown voltage is determined by the breakdown voltage of the device, which is obtained by thermally activating the semiconductor in the device. The 2EZ18D/TR8 has a minimum breakdown voltage of 18V. This is known as the Zener breakdown voltage and it is the point at which the diode begins to conduct in the reverse direction.

When a Zener diode is placed in a circuit, current flows into one end of the diode and out the other end. When the Zener diode reaches its breakdown voltage, current flows through it in the reverse direction, which helps to regulate the input voltage and maintain an output voltage. This is the main process that allows the 2EZ18D/TR8 to be used as a Voltage Clamp, Clamp and Peak Detector, and Switching Regulator.

Conclusion

In summary, the 2EZ18D/TR8 is a single Zener diode with a minimum breakdown voltage of 18V and a maximum continuous current of 100mA and a maximum peak current of 250mA. It is designed to reduce the noise and improve the performance of Voltage Clamp, Clamp and Peak Detector and Switching Regulator applications. It works based on the Zener diode breakdown effect, where when the reverse bias voltage exceeds the breakdown voltage, the diode breaks down and conducts in both directions, which helps to regulate the input and output voltages.