AZ23B22-E3-18

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Configuration:	1 Pair Common Anode
Voltage - Zener (Nom) (Vz):	22V
Tolerance:	±2%
Power - Max:	300mW
Impedance (Max) (Zzt):	55 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 17V
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 AZ23B22-E3-18 is one of the many types of diodes in the diode array category. It has many uses in a variety of applications. This particular diode array consists of two Zener diodes and three standard rectifying diodes in one package with minimal complexity of structure.

Application Field

The AZ23B22-E3-18 is a great choice for DC switching circuits due to its good electrical characteristics, AC characteristics, low noise, and filament arc prevention. It is also commonly used in AC to DC power supplies and protection circuits. Furthermore, it is often used in medical electronics and automated manufacturing. Some additional applications include voltage regulation, EMI protection, surge absorption, and input protection for linear voltage regulators. It also has a great deal of applications in automotive electronics and has found use as reverse polarity protection in car battery systems.

Working Principle

At the heart of the AZ23B22-E3-18 are two Zener diodes which allow for the production of a stable voltage reference. The Zener diodes are designed to provide a specific breakdown voltage and act exactly like an ordinary diode when operating in reverse-bias. When the voltage reaches a certain point, typically several volts, the diode will enter into reverse breakdown. At this point the voltage across the diode will remain constant, no matter what the input voltage. The remaining three diodes in the package are standard rectifying diodes, and they act exactly like any other diode. A diode is a semiconductor device consisting of two terminals, one positive, and one negative. When a voltage is applied to the positive and negative terminals of the diode, current will flow if the voltage is greater than 0.7V. If the voltage is below 0.7V, no current will flow through the diode.

Conclusion

The AZ23B22-E3-18 is a great choice for DC switching circuits, AC to DC power supplies, and EMI protection. It contains two Zener diodes and three standard rectifying diodes in one package, making it a very simple yet effective device. The Zener diodes provide a voltage reference and the rectifying diodes enable the current to flow. With its low noise and filament arc prevention, the AZ23B22-E3-18 is a great choice for the modern engineer.

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