SMBG4751AE3/TR13

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Diodes - Zener - Single

The SMBG4751AE3/TR13 is a single diode with a Zener designed for general purpose applications. The diode features a maximum reverse breakdown voltage of 6.9V and a maximum power dissipation of 250mW. The chip is designed to operate with a wide temperature range of -55°C to 125°C.

Application Field

The SMBG4751AE3/TR13 is mainly used for voltage regulation in circuits where a low-cost and low-leakage Zener diode is necessary. Common applications include telecom, computer hardware, automotive systems, and power management circuit protection.

Working Principle

The SMBG4751AE3/TR13 is a Zener diode. In the reverse direction, the diode acts as a leakage diode just like any other diode, but when there is a certain Zener voltage applied across it, it creates a sharp voltage and current collapse. The peak is also known as “knee” and is used for regulation purposes. In other words, the Zener diode maintains a constant current over a range of reverse-biased voltages and acts as a voltage regulator. When the voltage reaches the breakdown voltage (6.9V for SMBG4751AE3/TR13), the current suddenly increases due to the avalanche effect. The excess current is then drawn into a load, allowing the voltage across the load to remain constant and providing consistent regulation.

Conclusion

The SMBG4751AE3/TR13 Zener diode is an important component that helps ensure accurate voltage regulation in circuits. Its wide temperature range and low power dissipation make it suitable for use in a variety of electronic devices. Its ability to maintain constant current and voltage over a range of reverse-biased voltages makes it a great choice for many applications.

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