AZ23B3V0-HE3-08

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Configuration:	1 Pair Common Anode
Voltage - Zener (Nom) (Vz):	3V
Tolerance:	±2%
Power - Max:	300mW
Impedance (Max) (Zzt):	95 Ohms
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23

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Introduction

The AZ23B3V0-HE3-08 is a type of diode array, more specifically a Zener array. Zener arrays are designed to maintain a specific level of reverse voltage across the array terminals, providing voltage regulation and protection against overvoltage. Zener arrays can be composed of two or more Zener diodes, depending on the application. The AZ23B3V0-HE3-08 consists of two diode pairs in parallel, with each pair composed of two back-to-back Zener diodes. It is designed to provide reverse voltage protection and maintain the output voltage in a range of 3 to 10 volts.

Application Field

The AZ23B3V0-HE3-08 is mainly used in electronic circuits, specifically those involved in the regulation of power supply. It can be used for a range of applications, such as overvoltage protection for switching power supplies, voltage regulation for digital TVs, and as a protection device for audio output stages. It can also be used in instrumentation control circuits, and other similar applications.

Working Principle

When power is applied to an AZ23B3V0-HE3-08, the current flows through two Zener diodes in series. The two individual Zener diodes each have a breakdown voltage. When the applied voltage exceeds the breakdown voltage of either diode, the diode will be turned on and will pass current. This current is then split between the two diodes, and the voltage across both will be equalised. The two diodes together will provide a stable voltage across their terminals that is equal to the combined breakdown voltage of the two diodes. The AZ23B3V0-HE3-08 is designed to provide a stable output voltage of 3 to 10 volts, depending on the applied voltage.

Advantages

The advantages of using an AZ23B3V0-HE3-08 for voltage regulation and overvoltage protection are numerous. Firstly, it provides improved protection from overvoltage, as the two Zener diodes can dissipate more power than a single diode. Secondly, it provides for stable output voltage, as the output voltage will only change slightly under different input voltage conditions. Finally, the AZ23B3V0-HE3-08 is a cost efficient solution, as it only requires two diodes and a relatively low cost.

Disadvantages

The main disadvantage of the AZ23B3V0-HE3-08 is that it has a limited power dissipation rating, which is determined by the breakdown voltage. The diodes can also be subject to thermal runaway, leading to increased dissipation and power loss. Finally, in some applications the AZ23B3V0-HE3-08 may require additional resistors to be added for stability.

Conclusion

In conclusion, the AZ23B3V0-HE3-08 is a cost efficient and reliable Zener array, providing reverse voltage protection and voltage regulation for digital TV and other similar applications. It is composed of two diodes in parallel, each pair composed of two back-to-back Zener diodes in series. The AZ23B3V0-HE3-08 can provide a stable output voltage of 3 to 10 volts, and is ideal for applications where overvoltage protection is required. It has its disadvantages, such as power dissipation and thermal runaway, but for most applications these are minor issues.

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