CDLL747A

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	3.6V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	24 Ohms
Current - Reverse Leakage @ Vr:	3µA @ 1V
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 - CDLL747A APPLICATION FIELD AND WORKING PRINCIPLE

The CDLL747A is a type of semiconductor device known as a Zener diode. Zener diodes are useful for providing a constant and reliable voltage at constant current. They are used in a variety of applications, from providing protection against high voltage transients in digital electronics, to providing a stable reference point for linear regulators.The CDLL747A is a single diode, meaning it has only one p-n junction. It is designed for use at relatively low voltages, typically between 4 and 24 volts. It has a relatively high level of efficiency, meaning it can handle larger amounts of current than many other types of diodes. Additionally, the CDLL747A has a very fast switching time, meaning it can respond quickly to high voltage transients without adversely affecting other components in the circuit.The CDLL747A operates based on the principle of avalanche multiplication. When a voltage higher than the forward conduction voltage is applied to the cathode, electrons at the cathode-anode junction start to gain energy. These energized electrons can become energetic enough to collide with the lattice of atoms in the diode and create additional mobile electrons with equal energy. This avalanche multiplication process continues, resulting in a rapid increase in the current across the junction.This rapid increase in current is what makes the CDLL747A suitable for use in protection circuits. These circuits are designed to absorb and dissipate large transients of current, which could cause damage to other components if allowed to pass through unchecked. The CDLL747A’s fast switching time allows it to shunt away the excess current before it can cause any damage.The CDLL747A can also be used in linear voltage regulators. In this application, the diode forms a reference voltage across which components can be added to regulate the output voltage. This reference voltage typically ranges between 3.6V and 24V. The CDLL747A’s low noise and high efficiency make it an ideal choice for this application.Overall, the CDLL747A is a versatile diode that can be used in a variety of applications. Its low voltages and fast response times make it well suited for protection circuits, while its efficiency and low noise make it a good choice for linear voltage regulators.

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