1N5378BE3/TR8

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A 1N5378BE3/TR8 zener diode is an example of a single zener diode. It is designed as a reference in d.c. and a.c./d.c. circuits and is used to protect circuits from overvoltage transients. The 1N5378BE3/TR8 is primarily used as a reference in switching power supplies, such as the laptop adapters for equipment like computers and portable electronic devices.

1N5378BE3/TR8 has a maximum voltage rating of 5.6 volts and a power dissipation of 500mW. The key feature of the 1N5378BE3/TR8 is its low divergence from the specified zener voltage, allowing it to provide good regulation in switching environments. The operating temperature range is -40°C to +150°C.

The 1N5378BE3/TR8 functions by using the pressure-sensing diode principle. The device consists of a pressure-sensitive diode whose junction is placed directly beneath the anode. The diode is constructed so that electrons in the N-type material outside the junction liberate photons and create an avalanche-like behavior, creating more charge carriers than the amount initially applied. When this process occurs, electrons move to positive regions and holes move to the negative region as a result of electric field. As the result, electric current flows from anode to cathode, and the voltage across it will decrease to a constant. The constant can be precisely adjusted by varying the doping concentration, the shape of the diode, the size of the junction, and the exact position of the junction in the diode.

The 1N5378BE3/TR8 has a variety of applications, primarily in the field of switching power supplies. It can be used to help regulate the voltage output of the power supply, ensuring that the voltage does not exceed the specified limits. It is also used in other electronic projects, such as protection against overvoltage transients, control of the voltage in a rectifier, and more. Additionally, the device can be used to control the output of a buck converter to provide an effective yet reliable power source.

In summary, the 1N5378BE3/TR8 zener diode is an example of a single zener diode that is designed to provide precise reference voltages in both d.c. and a.c./d.c. circuits. It is equipped with a low end-of-line voltage deviation, and its pressure sensing diode principle allows for precise voltage regulation. The 1N5378BE3/TR8 is commonly used in a variety of applications, such as switching power supplies and electronic projects like protection against overvoltage transients or voltages in rectifiers.

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