MMSZ22T3G

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MMSZ22T3G Application Field and Working Principle

MMSZ22T3G is a 3.2 V Zener diode from the MMSZ family of Zener diodes produced by Multicomp. It belongs to the Single category of diodes. The device is a very small and easy-to-mount diode with a tight tolerance choice of 5%, 10%, 15% and 20%.

Features

• Low operating Voltage (3.2V)
• Good Clamping Action
• Low Forward Voltage (typically 0.3V)
• High Power Dissipation at Steady State

Applications

MMSZ22T3G is mainly used to ensure the unidirectional current flow of the circuit. It acts as a voltage regulator, protecting circuit elements from over voltage. The device is also used for load balancing in the context of multiple signal sources. MMSZ22T3G is suitable for applications such as cellular phones, radio transceivers, optical communication systems and industrial applications.

Working Principle

MMSZ22T3G works as a reverse bias diode. That is, it operates with a reverse voltage applied across its anode and cathode terminals. The reverse voltage creates a depletion region between the anode and cathode, allowing electrons to pass freely through when the reverse voltage reaches a given breakdown voltage. At this point, a high level of current can flow. A Zener diode has a built-in voltage regulator that modulates the current to generate a specific voltage. As such, a MMSZ22T3G diode will generate the output voltage of 3.2V when the reverse voltage applied to it is between -1.2V to -2.2V.

Conclusion

The MMSZ22T3G is an engineering solution for limiting the over-voltage in many circuits. It has a low operating voltage of 3.2V as well as a low forward voltage. This makes it a reliable protection solution in many devices. The device’s working principle is based on Zener effect. As the reverse bias voltage between the anode and the cathode of the diode reaches a given breakdown voltage, a high level of current starts to flow. As a result, the MMSZ22T3G diode generates a specific voltage of 3.2V.

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