3EZ100D/TR12

The 3EZ100D/TR12 is a part of a family of semiconductor devices known as diodes and more specifically, Zener diodes. Zener diodes prevent power spikes, balance electric currents and serve as voltage references. In particular, the 3EZ100D/TR12 is a single Zener diode which can be used in a variety of applications. This article will explain the 3EZ100D/TR12 application field and working principle.

Applications

Zener diodes achieve their effect thanks to the physical properties of PN junction diodes. When the reverse voltage of the diode is greater than a certain voltage known as the Zener voltage, a large amount of current begins to flow in reverse. This property of Zener diodes makes them ideal for voltage regulation, over-voltage protection, and voltage reference. The 3EZ100D/TR12 specifically is most often used as a series Zener diode to protect against circuit overloads.

The 3EZ100D/TR12 also performs admirably in applications involving voltage limiters, voltage regulators, clipper circuits, and voltage stretcher circuits. They are especially useful in clipper and stretcher circuits as they are able to clean and buffer audio signals, ensuring that only the frequency range desired is passed through undistorted.

Working Principle

The 3EZ100D/TR12 is a single Zener diode and functions as a voltage regulator. The important physical properties of the diode are its depletion width and PN junction. As the reverse voltage of the diode reaches the Zener voltage, the voltage of the depletion region increases, lowering the breakdown voltage and allowing a high current to flow in reverse. This current must pass through a resistor in order to be controlled, which is used to maintain the voltage at a constant level.

In practice, the 3EZ100D/TR12 is set up in series with a resistor, which controls the current through the diode. The resistor acts to limit the current, thus controlling the voltage drop across the diode. This ensures that the voltage is kept at a constant level and prevents unnecessary power spikes.

Conclusion

The 3EZ100D/TR12 is a single Zener diode which is used in a variety of applications, from over-voltage protection to audio signal buffering. Its ability to regulate voltage and prevent power spikes makes it invaluable in a variety of settings. Its working principle comes down to its ability to allow a large current to flow in reverse when a certain voltage level is reached. This current is then regulated by a resistor, setting the voltage at which current flows.