AZ23C4V3-7

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The AZ23C4V3-7 is part of the Zener Diode Array family of electrical components designed by NXP, allowing users to capitalise on the advantages offered by both diodes and integrated circuits. This particular component features two Zener breakdown voltages, with a high peak reverse voltage and low dynamic impedance, making it perfect for applications such as voltage measurement, voltage stabilisation and voltage regulation. This article will provide a comprehensive overview of the AZ23C4V3-7 and the operational principles involved.

Overview

The AZ23C4V3-7 is NXP’s latest product and is capable of providing up to 2 volts of regulated voltage. It contains two individual Zener diodes which are connected in a parallel configuration. This results in a unique design where both diodes are sharing the same cathode, allowing for lower series resistance and superior current efficiency. The component also has a high peak reverse voltage rating of 47V, making it well-suited for applications which require higher current or voltage stability.

The AZ23C4V3-7 benefits from having low dynamic impedance compared to other Zener diode arrays, meaning that it has a better response to rapid changes in current. It also has an effective capacitance of 0.67pF, allowing it to effectively handle rapid voltage swings.

Applications and Limitations

The AZ23C4V3-7 offers several advantages over traditional Zener diode technologies, making it ideal for a range of applications. It can be used in voltage measurement, voltage stabilisation and voltage regulation applications, as the two Zener diodes can be used to measure and adjust for changes in current and voltage. It can also be used in a wide variety of digital and analog circuits, as the component is robust and can handle a wide range of voltages and currents. The component also has a high peak reverse voltage rating and low dynamic impedance, making it suitable for applications where accuracy is important.

Despite these advantages, there are some limitations to the AZ23C4V3-7 component. It is not suitable for applications which require high power or very large currents, as it has a limited current rating of 20mA. It also has a capacitance of 0.67pF, meaning that it can only handle rapid voltage swings of a small magnitude. Lastly, the component is only available in surface-mount packages and cannot be used in through-hole applications.

Working Principle

The AZ23C4V3-7 consists of two Zener diodes and is connected in a parallel configuration. When voltage is applied to the component, a current will flow through both of the diodes. The first diode offers a low threshold voltage, allowing the current to pass through without issue until the voltage reaches a certain level. At this point, the voltage is clamped at the second diode and the output remains steady, regardless of the input voltage. This is known as a Zener breakdown and is the principle behind the AZ23C4V3-7 component.

The two diodes also serve different functions. The first diode provides a rapid response to voltage changes and is used to measure the voltage at the beginning of the circuit. The second diode acts as a clamp and serves to regulate the output voltage of the circuit. This design allows for greater accuracy in voltage regulation, as the second diode will ensure that the output voltage remains consistent regardless of the input voltage.

Conclusion

The AZ23C4V3-7 is a unique component which combines the advantages of both diodes and integrated circuits. It has a high peak reverse voltage and low dynamic impedance, making it highly suitable for applications which require accuracy and stability. The component can be used in voltage measurement, voltage stabilisation and voltage regulation applications and can handle a wide range of voltages and currents. It is also available in a variety of surface-mount packages and offers excellent performance at high currents, making it a versatile component with several potential applications.

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