AZ23B18-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):	18V
Tolerance:	±2%
Power - Max:	300mW
Impedance (Max) (Zzt):	50 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 14V
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 to AZ23B18-E3-18

The AZ23B18-E3-18 is a type of array based on the Zener diode. It offers 18 individually mounted diodes designed for medium voltage applications. These diodes are available in various sizes, from a mini SOT-327 package to a full-sized TO-205 package. This array is usually used in commercial, industrial and automotive applications.

Application Field

The AZ23B18-E3-18 Zener diode array is primarily used in medium voltage applications. The large variety of sizes and voltages it can operate at make make it suitable for many different applications. It is often used in voltage references and voltage regulation for power supplies, as well as for providing protection against stray voltages, overvoltage and reverse polarities. It is also often used in applications such as power DC/DC converters, clamping circuit applications and designing crowbar circuits.

Working Principle

The AZ23B18-E3-18 Zener diode array is based on standard Zener diodes. Under normal operation, the current flows from anode to cathode. When a voltage that exceeds the Zener breakdown voltage of the diode is applied, the anode-cathode junction breaks down and current begins to flow in the reverse direction. This reverse current is limited by the resistance of the load. The Zener voltage at which the diode will breakdown is determined by the Zener diode’s zener voltage rating.The Zener voltage of the AZ23B18-E3-18 can be adjusted by changing the temperature or the current flowing through the diode. If more current is flowing through the diode array at a given temperature, the Zener voltage will increase. Conversely, if the temperature is increased while current remains constant, the Zener voltage will decrease.Another useful property of Zener diodes is that they are less likely to be damaged by transient or high voltage spikes. This makes them easy to use for applications that are prone to voltage surges, such as automotive systems.

Conclusion

The AZ23B18-E3-18 Zener diode array is designed for medium voltage applications and can handle voltages up to 20V. It offers 18 individually mounted diodes and is available in various sizes and voltages. Due to its versatile nature and protection against transient or high voltage spikes, it is ideal for use in commercial, industrial and automotive applications. It is used primarily for voltage references, regulating voltages and providing protection against overvoltage and reverse polarities.

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