1N4753APE3/TR12

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Diodes - Zener - Single

The 1N4753APE3/TR12 Zener diode is a piece of semiconductor material designed to regulate the flow of electrical current when the current passes through it. It is a single-pole, single-throw (SPST) device that is usually packaged in a standard TO-92 plastic case. The 1N4753APE3/TR12 series offers a wide range of breakdown voltages ranging from 2.4 V to 22.0 V, making it useful in a variety of applications.

Application Field

One of the most common uses for 1N4753APE3/TR12 Zener diodes is as a voltage reference. The Zener diode acts as a voltage regulator, continuously adjusting the flow of current through the diode so that the output voltage stays constant. This makes it ideal for use in power supplies or voltage regulators, or for creating logic signals in digital circuits. The 1N4753APE3/TR12 series is also often used as a protection device in circuits, preventing damage from transients or overloads. In addition to providing voltage regulation and protection, the 1N4753APE3/TR12 series is commonly used in circuits as a temperature compensator and as a safety device in applications where the output voltage needs to be limited.

Working Principle

The 1N4753APE3/TR12 is a Zener diode, which works on the principle of a diode junction, where part of the diode is composed of a lightly-doped n-type region and another part is composed of a heavily-doped p-type region. When no voltage is applied to the diode, the majority carriers in the n-type material are electrons and the majority carriers in the p-type material are holes. At this state, the diode acts as an open-circuit. As the voltage across the diode increases, the electrons in the n-type material move to the p-type material and recombine with the holes. This causes a net movement of charge across the junction, creating a potential difference known as the reverse bias. The reverse bias pushes the junction\'s built-in potential even further in the reverse direction.

At a certain point, called the Zener voltage, the junction avalanche effect begins, causing a rapid increase in reverse current. The Zener diode acts like a resistor in series with the diode junction, limiting the current through the diode and keeping the voltage at the junction constant. This ensures that the output voltage remains constant. After the avalanche effect begins, the depletion layer around the p-n junction expands, reducing the reverse bias, which then reduces the amount of current through the diode and allows the voltage across the junction to decrease.

The 1N4753APE3/TR12 series of Zener diodes offer extremely low leakage current, making them a great choice when dealing with sensitive circuitry. Their wide range of breakdown voltages also makes them very versatile, allowing them to be used in many different applications. With the 1N4753APE3/TR12 series, you can be sure that your circuit is protected from overvoltage conditions, that the output voltage stays constant, and that the voltage can be compensated for temperature changes.

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