CDLL957

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	6.8V
Tolerance:	±20%
Power - Max:	500mW
Impedance (Max) (Zzt):	4.5 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 5.2V
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

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction

The CDLL957 is a single Zener diode engineered for surge and transient protection applications. It is an integral part of circuits designed to protect equipment and devices in electric, automotive and industrial systems, amongst others.This semiconductor has been designed to dissipate up to 400W of maximum power and can operate in temperatures ranging from -55 to 125°C. The nominal Zener breakdown voltage of this model is 9.1V and its test current is 1mA. The CDLL957 features an encapsulated construction that provides increased robustness and better protection of its components against dust, temperature and other environmental factors.

Application Field

The CDLL957 Zener diode has been designed for use in circuits that require surge and transient protection. Typical applications include:

• Communications systems.
• Industrial control systems.
• Computer systems.
• Cable television.
• Power supplies.
• Biomedical/instrumentation equipment.
• Automotive/consumer electronics.
• Audio/video equipment.
• Power grid protection systems.

The two main advantages of CDLL957 are its low power dissipation and its high breakdown voltage, which range from 9.1V to 10.8V. This makes it an ideal choice for overvoltage protection in DC/DC converters, avionics equipment and automotive systems, amongst others.

Working Principle

The Zener diode is a special kind of diode that has an intrinsic avalanche breakdown voltage. This means that when a sufficient reverse voltage is applied across its terminals, the diode will enter an avalanche breakdown mode and its current will increase dramatically. This effect is used in the CDLL957 to achieve surge and transient protection in circuits.When the circuit detects a surge or a transient, the Zener diode enters in avalanche breakdown mode and it begins to conduct current. This causes the transient to be diverted away from the sensitive circuitry and towards a resistor in series with the Zener diode. Once the transient is transmitted through the resistor, it is dissipated through the Zener diode and the surge is diverted away from the circuit. The CDLL957 is designed to provide better reliability and protection than other types of diodes. It can stand up to temperatures ranging from -55 to 125°C and dissipate power up to 400W. Its construction consists of an encapsulated multilayer substrate that provides improved robustness and better protection from dust, temperature and other environmental factors.

Conclusion

The CDLL957 is a single Zener diodeFor surge and transient protection applications. It has a nominal Zener breakdown voltage of 9.1V and a test current of 1mA. The CDLL957 is used in systems such as automotive, industrial and communications systems due to its ability to dissipate power up to 400W and perform at temperatures between -55 to 125°C. Its working principle relies on the intrinsic avalanche breakdown voltage of the Zener diode, which allows it to divert transients and surges away from the sensitive circuitry in the circuit. Its robust, encapsulated construction allows it to provide superior reliability and protection.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description