FLZ3V3B Discrete Semiconductor Products

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FLZ3V3B is a device belonging to the single Zener diode family. It is used as a voltage regulator in power supplies as well as a generic protective device in any circuit where a stable voltage source is needed.

Application Field

Zener diodes, such as the FLZ3V3B, are most frequently used in DC power supplies to provide a constant voltage in the output. They are also used as voltage regulators in radio and audio amplifiers along with heatsinks for thermal stability.

Zener diodes are sometimes employed in digital circuits, primarily as current limiter circuits, voltage references, and shunt resistors. This can help to protect the circuit from input voltages beyond what the processor should encounter.

When two or more zener diodes are used together, it is possible to create a voltage multiplier circuit that produces a much higher output voltage than the input. This can be especially useful when designing high voltage circuits such as those used in television sets or even in laser applications.

In general, Zener diodes such as the FLZ3V3B are primarily used in power supply designs, but they are also extremely useful in many other applications. They are available in a wide variety of voltage ratings, allowing designers to find the ideal device for their particular application.

Working Principle

The FLZ3V3B is a diode structure with a highly doped PN junction. This structure allows the diode to conduct in both directions, which means that a current can flow through the diode regardless of the orientation of the applied voltage. However, when a voltage is applied to the diode in the reverse direction (the voltage is greater than the Zener voltage of the device), the diode starts to conduct in a specific manner.

The Zener diode acts like a resistor for voltages lower than its Zener voltage. However, as the voltage approaches and exceeds the Zener voltage, the diode conducts more current which causes the voltage across the diode to remain constant. This is known as the Zener effect, and it is what allows the Zener diode to be used as a voltage regulator.

The FLZ3V3B is a single Zener diode, which means that it has only one PN junction. It is capable of conducting in both directions with a breakdown voltage of 3.3V. This is the voltage at which the diode will start conducting, and it is also the voltage that the diode will regulate in the event of any voltage fluctuations or spikes.

The diode also has a maximum power rating which tells how much current and power the diode can handle without being damaged. It is important to choose a Zener diode with a high enough power rating for the application in order to avoid any problems.

The FLZ3V3B also has a thermal resistance rating which tells how much heat the diode can dissipate. This rating is usually lower than that of other components and so it is important to use a heatsink when using the diode in high power applications.

In short, the FLZ3V3B is a single Zener diode that is primarily used as a voltage regulator in power supply designs. It has a breakdown voltage of 3.3V and has a rated power and thermal resistance that are both important to consider depending on the application.

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