MM3Z4V3ST1G

MM3Z4V3ST1G Diodes - Zener - Single Application Field and Worling Principle

The MM3Z4V3ST1G is a SOD–123 package Zener diode with a Zener voltage of 3.6 V. It belongs the family of Zener diodes known as single–diode Zener.

Application Field

This type of diodes have a number of specific applications, and are commonly used in power management, automotive and some electronic applications. The main application fields include

• Regulator circuits or ESD clamps;
• Primary Zener clamps (to protect ICs or TTL circuits);
• Voltage supervision;
• DC–DC converters.

Working Principle

Zener diodes have a “reverse bias” connection, in which these diodes are arranged to flow current in the reverse direction of their nominal direction. If a voltage is generated at this point, which is greater than the internal characteristic of the diode, the diode will breakdown, allowing current of the external circuit to pass through it. The voltage produced is able to maintain a constant value and can be controlled as voltage regulator.

The Zener diode usually is used with a series resistor, which could be called as “Zener resistor”. The resistor is a limiting resistor, designed to guarantee that the voltage developed across the cathode and anode will not exceed the nominal characteristic of the diode, ensuring that the diode does not become damaged.

Conclusion

The MM3Z4V3ST1G single diode Zener offers an optimal combination of features for power management and other applications, such as voltage supervision, hold–up time adjustments in SMPS, signal conditioning and more. This device is able to reduce power losses and increase system reliability. This makes these diodes idea components for a variety of applications.