SZMM5Z12VT1G Discrete Semiconductor Products

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A Zener diode is an example of a diode that is able to conduct current in the reverse-bias direction. This means that, when connected in a circuit, it is capable of allowing current to flow in a direction opposed to the flow of majority charge carriers. This particular type of diode, known as the SZMM5Z12VT1G, is a single component that is an ideal choice for achieving high-stability regulation of voltages in a wide range of regulated power supplies.

Overview

The SZMM5Z12VT1G Zener diode has a maximum power dissipation rating of 500 milliwatts and a maximum Zener voltage of 12 volts. It is capable of withstanding power surges from a range of temperatures, from -55°C to 150°C. Additionally, it displays a minimum breakdown voltage of 10.8 volts when a maximum reverse current of 5 milliamperes is provided.

Application Field

A Zener diode, including the SZMM5Z12VT1G, primarily exists as a regulator for voltage fluctuations in a circuit. As such, it is commonly used in DC power supplies for stabilizing the output voltage for low-noise DC power. It can also be used in electronic circuits as a precision regulator. It may also be incorporated into oscillators and radio circuits, and in other electrical systems requiring protection from overvoltage.

Working Principle

In this diode, the passivation layer acts as the resistance layer, and it is also where Zener breakdown occurs. When used to stabilize a current, the passivation layer acts as a tunnel and provides the current with a way to bypass the junction. The working of a Zener diode is based on controlling the flow of majority charge carriers. With reverse bias (applied negative voltage) in the junction, the potential barrier height is increased. Thus, a certain breakdown voltage is required for Zener breakdown to occur. When current is passed through the diode with the opposite polarity in the circuit, the Zener diode begins to pass those charge carriers which lead to current conduction in the reverse direction.

The breakdown voltage (Vz) of the SZMM5Z12VT1G Zener diode is roughly equal to 10.8 V. It is possible to use the current-voltage (I-V) characteristic of a Zener diode as a stabilizing factor for regulating the maximum operating voltage. Therefore, it can provide high stability of the regulated output voltage, withstood by the Zener diode, regardless of the input AC or DC voltage changes.

Conclusion

The SZMM5Z12VT1G Zener diode is an ideal component for achieving high-stability regulation of voltages in a wide range of regulated power supplies. It is a single component with a maximum power dissipation rating of 500 milliwatts and a maximum Zener voltage of 12 volts. Despite its small size, it is a useful device capable of providing stability in circuits and protecting against overvoltage. This diode can be a valuable addition to oscillators, radio circuits, DC power supplies, and other electrical systems requiring such protection.

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