SMBJ4760C/TR13

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The SMBJ4760C/TR13 is an axial-leaded Zener diode designed to provide voltage regulation and to protect sensitive datasheets. It is categorized under the heading of diodes, Zener, single. In order to better understand the device and its purpose, the application field and working principle is outlined below.

Application Field

The main application field of the SMBJ4760C/TR13 is that of reverse bias protection or voltage regulation. Since it is a Zener diode, it is useful when there is a need for a device that will protect downstream sensitive components from high potentials. It is also used to regulate power supplies.

This Zener diode has a peak-to-peak voltage rating of 46 volts and a continuous current rating of 5.0 amperes, making it ideal for high voltage and high current applications. Furthermore, this device has an operating temperature range of -55 to +150 degrees Celsius and is rated to a maximum power rating of 225 watts.

This device is a good option for use in power surge protection circuits, dc to dc converter circuits, grounding and isolating circuits, and other applications that require clamping or enhanced surge current handling. It is also commonly used in consumer electronics such as televisions and audio systems.

Working Principle

The voltage of a Zener diode can be understood by looking at its ‘equivalent circuit’. The circuit consists of two components: a pre-biased p-n junction and a series resistance and a large capacitance. When a voltage is applied across the p-n junction, it causes an electric field and an avalanche effect across the junction that breaks down the insulation material and accumulates free charge carriers. This leads to a constriction of the flow of electrons through the junction and as a result causes the resistance to lower to zero.

As the voltage on the diode increases, a steady current flows through it and the diode behaves like a linear resistor, this is known as the ‘Zener breakdown region’. The Zener diode has a fixed breakdown voltage where the current passing through it suddenly drops to zero and a voltage regulator is formed. This is the principle that makes Zener diodes useable in voltage regulation applications.

Conclusion

The SMBJ4760C/TR13 is a single, axial-leaded Zener diode that is useful for high voltage and high current applications. Its main application field is for reverse bias protection or voltage regulation. The device\'s breakdown voltage gives it useful voltage regulation properties and it is commonly used in consumer electronics, power surge protection circuits, and other applications.

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