BZX79-B11,143

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Diodes come in many forms, but one of the most versatile and useful architecture is the Zener single diodes, including the type BZX79-B11,143. The application field and working principle of this diode can be summed up into two major categories.

Application Field

BZX79-B11,143 is usually found in low power, low voltage circuits. It offers a great and cost effective way to add a voltage reference or aclamp circuit to a signal or to the supply power rails. This type of diode is also used in current limiting and voltage regulating function, where a small forward voltage drop is required. This diode can be used as an effective reverse diode protection in applications where the components must operate in different polarity.

The BZX79-B11,143 Zener diodes are also suitable for applications that require low noise level, such as RF filtering, signal detection and conditioning, LP filters, AC coupled circuits and many more.

Working Principle

The general principle of working of these diodes is quite simple. When the input voltage is equal to or greater than the diode’s zener voltage, the diode will conduct current in the reverse direction. This is because a voltage reference will form between the anode and the cathode. The Zener diode usually does not limit the maximum current flowing through it, but some of them have a maximum reverse breakdown current, so it is wise to check the data sheet to be sure.

The reverse leakage current is usually very low for most Zener single diodes, but increases with temperature. This type of diode can be used to provide a regulated output over temperature variations, with some sacrifice of regulation to allow for temperature dependent leakage currents.

In addition to regulating voltage, the BZX79-B11,143 diodes can also be used to regulate current in certain circuits. For example, they can be used to prevent circuit overloading or excessively high current draw. When the current draw reaches the diode’s maximum current rating, the diode will become forward biased and begin to regulate the current by dropping some of the voltage across the circuit.

Overall, the BZX79-B11,143 Zener single diodes are an excellent choice for designing low power and low voltage circuits. They offer a versatile and cost effective solution for a variety of applications, from basic voltage regulation to complex current control systems. When used in conjunction with other components, they can provide reliable and stable power solutions.

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