MMSZ4712-E3-08

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Diodes - Zener - Single

MMSZ4712-E3-08 application field and working principle

MMSZ4712-E3-08 is a Zener diode, single type, with a breakdown voltage of 6.8V. It is an axial leaded, glass encapsulated zener diode. It has a specific current value of 77 mA. This device is used for voltage regulation and voltage reference in electronic communication and control systems.

The working principle of MMSZ4712-E3-08 is based on the operation of a reverse-biased diode. When a diode is reverse biased, electric field strength increases as the output voltage approaches the rated reverse breakdown voltage. When the electric field reaches a certain level, the voltage across the diode will break down and a large reverse current will flow through the device. This reverse bias Zener breakdown voltage is the Zener voltage of the diode. According to the characteristics of the P-N junction at different current densities, the current is limited to a certain range after entering into reverse bias breakdown mode.

MMSZ4712-E3-08 is usually used to provide a stable reference voltage for voltage regulation, voltage stabilization and voltage calibration. According to the formula I = V/R, we can use the zener diode designed by MMSZ4712-E3-08 to provide a stable output voltage. The load current is usually applied through the voltage load series resistor, which is connected from the cathode of the zener diode to the power supply of the power supply and the resistor is specified for the zener diode. The zener diode and the accompanying connected resistor form a negative feedback circuit, so the output voltage of the circuit is stabilized.

In addition to voltage regulation, voltage stabilization and voltage calibration, MMSZ4712-E3-08 can also be used in some overvoltage and overcurrent protection circuits, such as surge absorber, AC static absorber, and so on. When the output voltage is greater than the breakdown voltage of the diode, the diode will enter the breakdown mode and limit the excessive voltage. At the same time, it can also be used in some sampling circuits and switching circuits. The parts of the circuit can be switched and the circuit can be activated or not by the zener diode.

MMSZ4712-E3-08 is one of the most commonly used diodes, and it has wide application in electronic communication and control systems. Besides, it is also widely used in other areas, such as surge absorber, AC static absorber, sampling circuit and switching circuit. MMSZ4712-E3-08 has reliable performance, stable output voltage and specific current value. Therefore, it is a popular diode in electronic design practice.

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