CDLL3821

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	3.3V
Tolerance:	±10%
Power - Max:	1W
Impedance (Max) (Zzt):	10 Ohms
Current - Reverse Leakage @ Vr:	100µA @ 1V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 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 CDLL3821 is a type of single Zener diode with an ultra-low power dissipation and wide range of working temperatures. It features excellent temperature stability and long-term reliability, making it well suited for automotive and other commercial applications. Its high temperature stability and reverse voltage capability make it an ideal choice for use in audio and video circuits, power converters and various automotive components.

Applications

The CDLL3821 single Zener diode is designed for use in automotive applications, such as the power supply and ECU, as well as audio and video circuits. It can also be used to provide over-voltage protection of automotive components, such as ignition coils and voltage regulators. Additionally, it is suitable for use in general-purpose power supplies, high efficiency switching converters, high power switches and AC power line rectifiers.

Working Principle

The working principle of the CDLL3821 single Zener diode is based on the Zener breakdown effect, where the Zener diode does not conduct at a reverse Volt-Ampere graph until it reaches a certain Voltage. When the applied reverse voltage exceeds the Zener breakdown voltage, the diode conducts current in the reverse direction and set up a stable Voltage. This unidirectional current flow is called “Zener breakdown” and can be used to regulate and stabilize the output of a power supply.The CDLL3821 allows reverse voltage up to 100V, which allows it to be used in a wide range of applications. Additionally, its low resistance helps it to regulate the electrical current more efficiently, resulting in improved power supply efficiency. Furthermore, its robust overvoltage protection and low VFP characteristic make it a very reliable device for audio and video circuits.

Conclusion

In conclusion, the CDLL3821 single Zener diode is an ideal choice for a variety of applications due to its excellent temperature stability, high Voltage stability, low resistance and robust overvoltage protection. It can be used in automotive, audio, video and power supply applications, as well as other commercial applications. Its small size, low power dissipation and temperature stability make it a reliable and effective device for a variety of applications.

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