CDLL5529A

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	9.1V
Tolerance:	±10%
Power - Max:	500mW
Impedance (Max) (Zzt):	45 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 7V
Voltage - Forward (Vf) (Max) @ If:	1.1V @ 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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Diodes - Zener- Single - CDLL5529A Application Field and Working Principle

CDLL5529A is a single Zener diode, usually abbreviated as CDLL5529A, which is a two-terminal semiconductor device with a high reverse breakdown voltage. It is useful in electronic circuits to provide protection against large reverse voltages applied to circuitry, as well as to provide a reference voltage in analog circuits.

What is a Zener Diode?

A Zener diode is a two-terminal semiconductor device, with a high reverse breakdown voltage. When a Zener diode is forward biased, it acts as an ordinary conducting diode and permits current to flow easily with a very small forward voltage drop. However, when the voltage applied to it is reversed, the Zener diode increases the current flow, creating a large and unexpected reverse breakdown voltage. The location of the breakdown voltage is absolutely determined by the doping of the PN junction and it is much higher than the typical PN junction diode.

CDLL5529A Application Field and Working Principle

The CDLL5529A is a 300mW Zener diode used for the protection of other semiconductor devices against reverse biasing or over-voltage conditions. It can be used in a variety of applications such as voltage clippers, voltage multipliers and low threshold voltage switch-mode applications as well as in AC/DC converters, power supplies, and inverters.The CDLL5529A has a rated Zener current rating of 5.5mA and a reverse breakdown voltage of 6.2V, making it ideal for use in controlling the output voltage of a DC power supply. It is also ideal for use in audio applications such as over-voltage protection circuits and DC voltage regulation.As a Zener diode, the CDLL5529A works by allowing the required current to flow through the diode when the input voltage exceeds the diode\'s rated Zener voltage. This voltage is determined by the doping profile of the diode\'s PN junction and is greater than the PN junction diode. When the reverse voltage reaches the breakdown voltage, it causes the rapid decrease in IPL (Leakage Current) and increase in IZT (Zener Current) across the diode, limiting the applied voltage to the rated voltage of the diode. The CDLL5529A also comes with high temperature performance and noise immunity making it an ideal choice for applications such as over-voltage protection circuits and DC voltage regulation. Due to its low thermal resistance, the diode is suitable for operation in high temperature applications.To ensure the reliable operation of the CDLL5529A Zener diode, it is important to select the correct operating temperature range, a suitable device for the operating voltage, and the correct device for the grade rating. The maximum operating temperature for the CDLL5529A is 110°C. Therefore, it should be operated at temperatures well below this level.

Conclusion

The CDLL5529A Zener diode is a reliable and affordable two-terminal semiconductor device with a high reverse breakdown voltage. It is useful in electronic circuits to provide protection against large reverse voltages applied to circuitry, as well as to provide a reference voltage in analog circuits. With a rated Zener current rating of 5.5mA and reverse breakdown voltage of 6.2V, it is suitable for applications such as voltage clippers, voltage multipliers and low threshold voltage switch-mode applications as well as in AC/DC converters, power supplies, and inverters.

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