BZX85C3V3 R0G

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Diodes - Zener - Single: BZX85C3V3 R0G Application Field and Working Principle

The BZX85C3V3 R0G is a type of single Zener diode, part of an extended range of Zener diodes manufactured by Vishay, a leading supplier of discrete semiconductor products.

A Zener diode is a type of diode that takes its name from physicist Clair Zener, who observed that as the reverse voltage is increased across a PN junction, a large reverse current begins to flow at a specific voltage. The diode that exhibits this behavior is known as a Zener diode and can be used to provide a constant voltage regardless of changes in the current, making it an important component for power supply design, voltage regulation, and voltage stabilization.

The BZX85C3V3 R0G is a single-diode package, meaning it contains only one diode. It is designed to operate at a voltage of 3.3 volts with a maximum forward voltage of 1 volt and a maximum reverse current of 300 nanoamperes. Its size is very small, with a total height of 1.45 millimeters and an overall footprint of 0.3 × 0.3 millimeters.

The BZX85C3V3 R0G has a wide range of applications because of its ability to provide a precise voltage output. It is commonly used in 4- to 5-volt battery-operated circuits and portable USB devices such as cell phones and tablets. It is also popular in low-power LED applications, such as LED drivers and LED strips. Additionally, it may also be used in circuit protection applications to prevent overvoltage or voltage spikes.

The working principle of the BZX85C3V3 R0G is based on the Zener effect. As mentioned earlier, as the reverse voltage is increased across a PN junction, a large reverse current begins to flow when the voltage reaches a certain point. This voltage is referred to as the Zener voltage and is typically constant with changes in the applied voltage. The BZX85C3V3 R0G is designed to provide a precise output voltage of 3.3 volts, regardless of fluctuations in the incoming power supply.

The Zener voltage of the BZX85C3V3 R0G is 3.3 volts and the maximum reverse voltage is 5.1 volts. When a voltage greater than 5.1 volts is applied to the diode, a reverse breakdown occurs and the device will conduct current in the reverse direction, allowing it to limit the output voltage to the desired 3.3 volts. Once the input voltage drops to 5.1 volts or lower, the diode will return to its forward-biased and non-conductive state.

The BZX85C3V3 R0G is an ideal solution for a wide range of applications that require a precise output voltage. It is able to provide a stable output voltage in the face of fluctuating incoming power, making it an essential component of many circuit designs.

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