CDLL969

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	22V
Tolerance:	±20%
Power - Max:	500mW
Impedance (Max) (Zzt):	29 Ohms
Current - Reverse Leakage @ Vr:	500nA @ 17V
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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Introduction to CDLL969

The CDLL969 is a single Zener diode, meaning it is a semiconductor device with a single PN junction. Commonly referred to as an “avalanche diode”, the CDLL969 is a diode specifically designed to breakdown in a very predictable, uniform behavior. This controllable breakdown voltage is what gives the CDLL969 its significant advantages over other diodes when used in specific applications.

Applications of CDLL969

The CDLL969 is ideal for use in applications that require voltage regulation, voltage clamping, and protection from overvoltage. Some common applications in which the CDLL969 are used include:

• Voltage Clamping - In a voltage clamping application, the CDLL969 is connected in series with a load such as an inductor. As the load current increases, the voltage across the load rises until it approaches the breakdown voltage of the CDLL969. At this point, the diode starts to conduct and clamps the voltage across the load at its breakdown voltage.
• Voltage Regulation - The CDLL969 can also be used as a voltage regulator. By connecting the diode to ground, the voltage across the diode is set to the breakdown voltage, and the load connected in series with the CDLL969 will then be regulated at the same voltage.
• Protection from Overvoltage - The CDLL969 can be used to protect other components in the circuit from overvoltage. By connecting the CDLL969 in series with the component to be protected, the voltage across the component will be limited to the breakdown voltage of the diode.

Working Principle of CDLL969

The CDLL969 works on a principle known as avalanche breakdown. This phenomenon occurs when a high electric field is applied across a semiconductor PN junction. When the field strength reaches a critical point, the junction becomes highly conductive and electrons start traveling rapidly in both the forward and reverse directions. This reaction causes a sudden increase in current, a phenomenon known as “avalanche”.The breakdown voltage of the CDLL969 is determined by the doping concentration of the material used to construct the diode. The higher the doping concentration, the lower the breakdown voltage of the diode. The breakdown voltage is also affected by temperature; as temperature rises, the breakdown voltage decreases.

Conclusion

The CDLL969 is a single Zener diode, designed specifically for use in applications that require voltage regulation, voltage clamping, and protection from overvoltage. Working on the principle of avalanche breakdown, the breakdown voltage of the CDLL969 is determined by the doping concentration of the material used to build the diode and could be affected by temperature.

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