ACZRA4743-HF

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ACZRA4743-HF Zener Diode

The ACZRA4743-HF series are single zener diodes, packaged in a small SOT-23 with a maximum working voltage of 3.2 volts and a maximum power dissipation of 600 milliwatts. As a result, these diodes can be used in a variety of applications, ranging from signal processing to power regulation.

Applications

ACZRA4743-HF diodes are most commonly used for voltage regulating and signal conditioning in automotive and industrial applications. Their small size and low power demands make them suitable for use in distributed systems, such as those found in a vehicle’s electrical system. They can also be used in a switching power supply circuit, where they would act as both a source of voltage and a clamp against transient voltage spikes.

Additionally, the ACZRA4743-HF series can be used to create the necessary voltage and current conditions for the operation of active electronic components, such as transistors, FETs, amplifiers and operational amplifiers. In this application, the Zener diode is able to provide a constant and stable voltage in order to ensure that these components function properly.

Working Principle

At the heart of the functioning of an ACZRA4743-HF diode is the avalanche effect, commonly known as the Zener effect. Under this phenomenon, when a diode is reverse-biased and its reverse-breakdown voltage is reached, it starts to conduct and limits the voltage across it.

Contrary to a standard rectifying diode, which blocks all reverse-voltages, the Zener diode allows a constant flow of current even with higher voltages, thereby reducing the reverse-voltage on the diode to a constant pre-defined value, which is the rating of the diode.

When the ACZRA4743-HF diode is used in a voltage-regulating circuit, it acts as a voltage limiter that limits the voltage across it at all times, irrespective of the amount of voltage applied to it. This ensures that the components connected to it, such as transistors and FETs, function optimally.

Benefits

The ACZRA4743-HF series combines the benefits inherent in Zener diodes, with its space-saving SOT-23 form factor. It can be used in a variety of applications, including signal processing, power regulation and creating necessary voltage/current conditions for active electronic components, such as transistors, FETs and amplifiers. In addition, these small, low-power devices are equipped with an integrated protection mechanism, ensuring that they function optimally despite any external transient voltages. This makes the ACZRA4743-HF series of Zener diodes ideal for distributed power systems and industrial applications.

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