SZMM3Z3V9T1G

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Diodes are semiconductor devices that are used in a variety of applications for the control and protection of electrical circuits. The most common type of diode is the Zener diode, which offers superior voltage regulation and protection properties. The SZMM3Z3V9T1G is a single Zener diode with a reverse breakdown voltage of 3.3V and a rated power dissipation of 9W.

Basic Characteristics

The SZMM3Z3V9T1G is composed of a single PN junction diode with the typical voltage-current characteristics of a Zener diode. It is optimized for use in circuits needing superior power handling and superior voltage regulation. The peak forward current is 2A with a limiting voltage forward drop of 1.2V, and the peak reverse current is 5 μA. The Zener breakdown voltage is 3.3V +/- 5%.

Applications

The SZMM3Z3V9T1G is mainly used for the protection of circuits from high transient voltages, and for the regulation of input or output voltages in power supply applications. It is also used as a clamping diode, or as a shunt regulator for voltage stabilization. This Zener diode is widely used in electronic applications such as power supplies, communication systems, automotive and industrial equipment.

Working Principle

The working principle of the SZMM3Z3V9T1G is based on the "Zener break down" phenomenon. When reverse biased, the zener diode is maintained in a “high resistance” or low current state. As the reverse voltage is increased, the voltage across the diode reaches the Zener voltage threshold, at which point the PN junction breaks down with a sharp decrease in the resistance. This allows a large current to flow through the diode, acting as a voltage regulator.

The reverse breakdown of the SZMM3Z3V9T1G occurs when the reverse voltage applied to the anode signal exceeds the specified "breakdown voltage". When used as a voltage regulator, the rated reverse current sustains the breakdown as its value is proportional to the voltage applied to the diode.

The SZMM3Z3V9T1G is capable of providing superior voltage regulation due to its high power rating and high reverse breakdown voltage. Furthermore, its small size and low cost makes it an ideal choice for many applications.

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