SMBJ4756A/TR13

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SMBJ4756A/TR13

The SMBJ4756A/TR13 is a single-phase diode made by Sunmoney Technology Corporation and is part of their "Ultra High Reliability" product series. This diode belongs to the Zener category, which is a type of semiconductor device that is used to regulate and control the voltage in a circuit. Specifically, the SMBJ4756A/TR13 is a "power" Zener, meaning that it is designed for use in power line applications. It is rated for continuous operation at up to 75 volts and can handle peak surge currents of up to 5 amps.

Applications

Zener diodes like the SMBJ4756A/TR13 are used in a wide variety of electronic applications. In many cases, they are used as voltage regulators, in applications where a specific voltage level needs to be maintained in a circuit. For example, they can be used in power supplies to ensure that the correct voltage is provided to the attached components. They can also be used in free-wheeling or snubber circuits, where they are used to protect sensitive components from voltage transients and surges.

Another application of Zener diodes is to protect voltage sensitive components, such as transistors and thyristors. In this application, they are placed in the circuit in such a way that they can shunt the excess voltage away from the components and prevent them from being damaged. They are also commonly used in circuit protection circuits, where they can prevent the voltage in a circuit from reaching levels that are too high and damaging other components.

The SMBJ4756A/TR13 is also used as a voltage reference and for switching applications. In switching applications, it can be used as an on/off switch in electronic circuits where the state of the switch needs to be changed in response to a certain voltage level.

Working Principle

The working principle of the SMBJ4756A/TR13 is based on the principle of PN junction formation. In the case of zener diodes, a reverse bias voltage is applied across the junction, resulting in a depletion region in the base materials. When the voltage is increased further, the depletion region starts to shrink and allows electrons to cross over the junction. This process causes holes to appear in the P-type material as the electrons move to the N-type material. This in turn causes the current to start flowing in the reverse direction and the voltage drops to the desired level.

The SMBJ4756A/TR13 has a breakdown voltage of 75 V and a maximum power rating of 500 mW. This means that the SMBJ4756A/TR13 can be used in circuits where the input voltage needs to be regulated to 75 V and the power requirement is limited to 500 mW. In addition, the diode also has a high storage temperature range of -65°C to +150°C, making it suitable for use in high temperature applications.

Conclusion

The SMBJ4756A/TR13 is a single-phase diode belonging to the Zener category. It is commonly used in power line applications, as a voltage regulator, as a protective device for voltage sensitive components, and as a voltage reference. Its working principle is based on PN junction formation and it has a breakdown voltage of 75 V and a maximum power rating of 500 mW. It also has a high storage temperature range of -65°C to +150°C.

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