2EZ7.5D5/TR12

2EZ7.5D5/TR12 Application Field and Working Principle

2EZ7.5D5/TR12 is a single Zener diode. Zener diodes are used in a variety of applications and provide some unique advantages over other types of diodes. They were originally developed for use in stabilizing voltages in electronic circuits, but now are also used for frequency banding, protection from electrical transients, and as voltage references.

Applications

Zener diodes are used in a variety of applications, such as stabilizing the output voltages of power supplies, protecting electrical circuits from power surges, and providing the basis for current-limiting circuits.

The most common application of Zener diodes is in regulating the output voltage of power supplies. Zener diodes are connected between the output of the power supply and ground, in order to limit the voltage of the power supply to a certain value. If the voltage exceeds this value, the diode becomes conductive and the excess current passes through it. This in turn reduces the output voltage until it comes back to the desired level.

In addition to regulating the output voltage of power supplies, Zener diodes can also be used to protect electrical circuits from power surges. As the voltage of the power supply increases, the Zener diode starts to become conductive, allowing the excess current to dissipate and limiting the increase in the power supply voltage.

Finally, Zener diodes can be used as voltage references in current-limiting circuits. By connecting a series of Zener diodes to a circuit, it is possible to limit the current to the desired level. As the voltage increases, the Zener diodes become less conductive, allowing the circuit to draw less current and limiting the maximum voltage that the circuit can reach.

Working Principle

Zener diodes are designed to operate in the "reverse bias" region, which means that a reverse voltage is applied to the diode. When the reverse voltage of the Zener diode exceeds the Zener voltage of the diode, a very low resistance is created and current starts to flow through the diode. This current flow is not dependent on the magnitude of the reverse voltage, thus the Zener diode acts as a voltage reference.

The value of the Zener voltage of the diode is determined by the type and construction of the diode. The Zener voltage for 2EZ7.5D5/TR12 is 7.5 volts.

As the reverse voltage of the Zener diode is increased, more and more current starts to flow through the diode. As this current flow increases, heat is generated within the diode, which can eventually cause the diode to fail if the current flow is too high. To prevent this, Zener diodes are designed with a power rating, which is the maximum allowable power in watts that the diode can handle without being damaged. In the case of 2EZ7.5D5/TR12, the power rating is 0.2 watts.

Conclusion

Zener diodes are a type of semiconductor device that can be used for voltage regulation, protection from power surges, and providing voltage references in current-limiting circuits. The Zener voltage of a Zener diode is determined by the type and construction of the diode, and the power rating is the maximum allowable power in watts that the diode can handle without being damaged. 2EZ7.5D5/TR12 is a single Zener diode with a Zener voltage of 7.5 volts and a power rating of 0.2 watts.