SMBJ5379B/TR13

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The SMBJ5379B/TR13 belongs to a family of diodes known as Zener Diodes. Zener Diodes are a type of semiconductor device that is typically used for voltage regulation, clipping, or voltage reference applications. In particular, the SMBJ5379B/TR13 is a single Zener diode that can be used in a variety of applications, including voltage regulation, overvoltage protection, and ESD protection.

When placed in an electrical circuit, the SMBJ5379B/TR13 operates by allowing current to flow in one direction while blocking current in the opposite direction. This is achieved by the presence of a Zener leakage current, a current that ‘leaks’ into the diode as it is reverse biased. This leakage current can be used to control the voltage across a circuit, in particular, by using the Zener Voltage, the voltage across the diode when it is reverse biased, as a reference point.

In many applications, the SMBJ5379B/TR13 is used to provide voltage regulation. This is done by connecting the Zener diode across a load in series with a current limiting resistor. When the voltage across the load exceeds the Zener Voltage, the current through the diode increases, providing protection for the load by limiting the voltage supplied to it.

The SMBJ5379B/TR13 can also be used for overvoltage protection. In this application, the diode is again connected in series with a current limiting resistor, however, the diode is reverse biased. When the voltage across the load exceeds the Zener Voltage, the diode becomes forward-biased, allowing the current to flow and limiting the voltage across the load.

The SMBJ5379B/TR13 can also be used as an Electrostatic Discharge (ESD) protection device. In this application, the diode is connected in a reverse bias configuration between the power and ground pins of a circuit. When an ESD event occurs, the diode conducts the current away from the circuit, providing protection from electrical damage.

The SMBJ5379B/TR13 is a popular device due to its small size and low cost. It has a wide operating temperature range of - 55°C to 150°C, making it suitable for a variety of applications. It also has a leakage current of 1nA, which helps to ensure the accuracy of the voltage regulation.

In conclusion, the SMBJ5379B/TR13 is a single Zener Diode that can be used for voltage regulation, overvoltage protection, and ESD protection. It is a low cost and efficient device, making it a popular choice for many electronic applications.

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