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Diodes - Zener - Single - MMSZ6V8T1 Application Field and Working Principle

MMSZ6V8T1 is a Zener diode which is within the category of single diodes. It is named after Leonard Zener, the inventor of Zener diodes, and is described as a voltage-regulated diode. It is used when a specific voltage must be maintained to protect a circuit or to generate a reference voltage. Additionally, compared to regular diodes, it can handle high voltages and larger current capacities, making it more practical in the majority of electronic circuits.

What Is a Zener Diode?

A Zener diode is composed of a junction between two semiconductor circuits, similar to any other diode. However, unlike a regular diode that only allows current to flow in one direction, a Zener diode allows free current flow in both directions. On the p-side of the junction, the valence band is close to the conduction band, allowing for both n-type and p-type electrons to easily flow across the junction. The actual voltage regulated by the diode is determined by its breakdown voltage, which is set when it is manufactured.

MMSZ6V8T1 Application Field

The MMSZ6V8T1 is a Zener diode with a breakdown voltage of 6.8V, making it suitable for the regulation of voltage from 4.0V to 7.5V. It is especially useful for circuit designs that require the insertion of a reference voltage for the accurate operation of other components in the electronics. Furthermore, the MMSZ6V8T1 is designed for TSOP II SMD applications; as such, it is suitable for space-saving, higher-density designs such as those used in hand-held or notebook computers.

MMSZ6V8T1 Working Principle

The MMSZ6V8T1 works on the principle of a Zener diode. It is made of two semiconductor materials, one of which is n-type and one of which is p-type. A voltage is applied across the diode, and when the reverse bias reaches its breakdown voltage, the additional electric field causes current to flow in both directions. The breakdown voltage of the MMSZ6V8T1 is 6.8V and when it is connected to any higher voltage, the current will flow through the diode until the reference voltage is reached.

Also, the MMSZ6V8T1 diode contains a high-efficiency, low-loss silicon package with a total capacitance of 3 pF max. Its power dissipation ratio is 250 mW, and maximum forward voltage is 0.5 V. Additionally, its reverse current leakage is very low, at a maximum of 5 nA.

Conclusion

The MMSZ6V8T1 is a single diode within the Zener diode product family. It is designed for TSOP II SMD applications and works on the principle of maintaining a specific voltage by allowing current to flow freely in both directions. It is popularly used in circuitry that requires a specific reference voltage and has a breakdown voltage of 6.8V, a total capacitance of 3 pF max, a power dissipation ratio of 250 mW, and a maximum forward voltage of 0.5V.

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