CDLL4472

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	20V
Tolerance:	±5%
Power - Max:	1.5W
Impedance (Max) (Zzt):	12 Ohms
Current - Reverse Leakage @ Vr:	50nA @ 16V
Voltage - Forward (Vf) (Max) @ If:	1V @ 200mA
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Surface Mount
Package / Case:	DO-213AB, MELF
Supplier Device Package:	DO-213AB

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Introduction

The CDLL4472 is an industry standard Zener diode. It is a single, voltage-regulating component that is commonly used in power-supply designs. It is often used in consumer electronics where the requirement is for a reliable and robust voltage regulator.

Applications

The CDLL4472 Zener diode can be used in a wide range of applications, including:

• System power protection
• Voltage regulation for AC/DC converters
• Low-voltage DC power supplies
• Voltage reference for circuit protection
• Buffer circuits for clocking and timing
• Circuit isolation for analog-to-digital conversion
• Power management

Working Principle

A Zener diode is a semiconductor device that has been designed to provide a consistent and reliable voltage source. Unlike traditional diodes, which allow current to flow in one direction only, Zener diodes allow current to flow in both directions, but with a consistent and predictable Voltage-current (V-I) characteristics. The breakdown voltage of the CDLL4472 is 2.4 V, which is the voltage at which the diode exhibits the Zener effect. In other words, once the Voltage across the device reaches 2.4 V, the current through the diode sharply increases. The Zener diode is unique in its ability to provide a constant current and voltage source. This is done by controlling the amount of current that is allowed to flow through the diode. In order to do this, the diode must be connected to a circuit with an appropriate resistor, which is determined by the Voltage and current specifications of the application. When the Voltage across the diode is below the breakdown voltage, the diode acts as an open circuit and no current will flow, however, when the Voltage is equal to or greater than the breakdown voltage, the current through the diode will increase exponentially with a minor increase in Voltage. This property of Zener diodes makes them ideal for voltage regulation applications. The diode will maintain a constant voltage across itself and can be used to regulate the Voltage across an input or output in a circuit. The current through the diode must be kept below its rated maximum in order to ensure reliability.

Conclusion

The CDLL4472 is a reliable, robust and versatile Zener diode commonly used in power supplies and other applications where precise and consistent voltage levels are required. Its simple, predictable V-I characteristics make it easy to use and it is able to maintain a constant voltage output even when under load. Care must be taken, however, to ensure that the current through the diode is kept below its rated maximum.

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