2EZ12D2/TR8

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A 2EZ12D2/TR8 Zener diode is a single diode component consisting of a semiconductor body and two terminals, one of which is anode and the other cathode. In the manufacturing process, a stepped junction structure is formed, in which the voltage between the two terminals decreases as the current between the two terminals increases. The Zener diode is an essential component in many electronic circuits. It is used as a voltage reference and protection device in various power supplies and voltage regulators. In addition, it is used in many other circuit arrangements, such as in cascode circuits, current-voltage transducers, pulse shaping oscillators, autotransformers and in the control of electrical noise. Its most common application is as a voltage regulator, for example in high-voltage switch mode power supplies.

The 2EZ12D2/TR8 Zener diode is designed for use in applications requiring voltage stability and overload protection. It features an avalanche junction, which allows a high level of reverse current flow from the cathode to the anode. The avalanche junction breaks down when the device is subjected to higher levels of reverse voltage. This voltage trip point is known as the Zener Voltage (Vz). The Vz value of the 2EZ12D2/TR8 is 8.2V, with a 10V maximum reverse voltage. The device also has a maximum power rating of 400 mV.

A typical application of the 2EZ12D2/TR8 is in a voltage regulator circuit. The device can be used to create a stable 5 V output from an unregulated 12 V supply. The circuit diagram is shown in the accompanying diagram. The current flows from the 12 V supply, through the resistor, zener diode, transistor, and load. The zener diode clamps the output voltage to a predetermined value. The transistor acts as a current amplifier and is used to drive current through the load. The resistance in the resistors sets the output voltage of the circuit.

The operation of a Zener diode is based on the fact that when the voltage applied to the Zener diode exceeds its reverse breakdown voltage (Vz), the diode operates in the reverse breakdown mode, allowing a large current to flow in the reverse direction. This current is then limited by the resistance of the resistor. As the voltage across the resistor increases, the current flows reduces, limiting the voltage across the load. This limits the Voltage output to a preset level.

The 2EZ12D2/TR8 is a reliable and cost-effective solution for voltage stabilizing and overload protection applications. It features a low forward voltage drop and a low power rating, allowing it to be used in a wide range of applications. Its Stepped Junction technology provides an accurate reference voltage for a variety of applications.

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