1N2819B

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Diodes - Zener - Single

The 1N2819B is a junction zener diode with a single, symmetrical, temperature-stable breakdown voltage. It has a low zener impedance and offers a low cappack, which is useful in many applications. Its breakdown voltage ranges from 6.2V to 8.2V. The low zener noise and the low power rating of the 1N2819B makes it suitable for applications requiring high frequency operation, such as video amplifiers, LCDs and PLLs.

The 1N2819B is an ideal zener diode for low power applications. It is encapsulated in a small DO-35 package and is designed for use in consumer electronics applications. It also finds use in data processing, communications and instrumentation systems.

The working principle of a 1N2819B is fairly simple. When a voltage is applied to the device, the applied voltage will cause the electrons in the diode to become redistributed. This redistribution of the electrons causes an electric field to be generated, forming a depletion region in the semiconductor material. As the voltage further increases, the intensity of the electric field increases and consequently, the electrons become more strongly attracted by the applied voltage. When the voltage reaches the zener voltage, the electric field within the depletion region becomes stronger. This electric field will prevent the electrons from crossing the diode junction and cause the current to be diverted.

This is the primary way the 1N2819B works to regulate the flow of current within a circuit. The 1N2819B can also be used to protect circuits from reverse voltage surges from accidental inductive transients. By clamping the voltage across the device at the specified breakdown voltage, the 1N2819B will essentially prevent any further increase in the voltage.

The 1N2819B is a versatile device and can be used in a variety of applications. In consumer electronics, it is used in battery chargers and LCDs, as well as to provide carrier signals in audio and video equipment. In instrumentation and communications systems, it is used to provide a stable voltage reference in a wide range of oscillator circuits. It is also used in military and aerospace applications due to its low zener noise and low power ratings.

In conclusion, the 1N2819B is an excellent choice for a variety of applications, from consumer electronics to instrumentation, communications and military/aerospace applications. It is a versatile device due to its low zener noise, low power rating, and temperature-stable breakdown voltage. Furthermore, it can be used to protect circuits from accidental reverse voltage surges due to its clamping effect on the voltage.

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