1N5363/TR12

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The most common type of Zener diode is the 1N5363/TR12 type, which is a single diode with a nominal breakdown voltage of 12 volts. This diode is very popular in applications where a low voltage, low current switch is required. In this article, we will discuss the application field and working principle of the 1N5363/TR12.

Application Field

The 1N5363/TR12 is most commonly used in switching circuits, as a low voltage, low current switch. This type of diode is also well-suited for voltage regulation and protection, as it can be used to protect circuits from overvoltage or transients. This diode can also be used in low voltage AC applications, such as fluorescent lamp ballast or motor speed control.

In addition, the 1N5363/TR12 is also used in low noise amplifier circuits, as it is capable of providing low voltage and low impedance. This diode can also be used in low voltage regulator circuits, such as shunt regulators, buck regulators and linear regulators. Finally, this type of diode is used in a variety of audio amplifier and oscillator circuits, as it is capable of providing high-bandwidth amplification with low distortion.

Working Principle

The 1N5363/TR12 diode is a two-terminal, negative-temperature-coefficient (NTC) type of device. When a forward-bias voltage is applied to the device, electrons are injected from the N-type material into the P-type material, resulting in a current flow through the device. This current flow is limited by the delayed breakdown mechanism, which occurs when the voltage exceeds the Zener voltage.

When the applied voltage reaches the Zener voltage, the diode begins to conduct and the current flow through the device increases. This sudden current surge is known as the Zener knee and is a characteristic feature of Zener diodes. At the Zener knee, the device begins to regulate the voltage, resulting in a constant voltage across the diode even if the applied voltage increases. This is why the 1N5363/TR12 diode is often used as a voltage regulator.

In addition, the Zener voltage of the 1N5363/TR12 is temperature dependent. As temperature rises, the Zener voltage decreases and this can affect the operation of the device. To mitigate this effect, the device is often connected to a temperature-compensated resistor network to ensure accurate voltage regulation.

Conclusion

The 1N5363/TR12 is a single diode with a nominal breakdown voltage of 12 volts. This diode is commonly used in switching circuits, as a low voltage, low current switch. In addition, it can also be used in voltage regulation and protection, low noise amplifier circuits, and low voltage regulator circuits. It is characterized by a Zener knee where the voltage suddenly drops and the device begins to regulate the voltage. It is also temperature dependent, and can be connected to a temperature-compensated resistor network for accurate voltage regulation.

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