CDLL748

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	3.9V
Tolerance:	±10%
Power - Max:	500mW
Impedance (Max) (Zzt):	23 Ohms
Current - Reverse Leakage @ Vr:	2µA @ 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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CDLL748 is a type of Zener diode developed by Taiwan Semiconductor Manufacturing Co. (TSMC). It is a single diode designed specifically for use in applications which require a low-power, low-noise, low-cost solution. The diode is suitable for use in a wide range of applications, including applications in power supplies, personal electronics, communication systems, automotive, audio and video products.The CDLL748 Zener diode consists of two small stripes which are created by ion implantation on a custom silicon chip. These stripes form the two electrodes, known as cathode and anode, that make up the diode. The cathode acts as the negative electrode and the anode serves as the positive electrode. By adjusting the energy, temperature, and doping levels the resistance of the diode can be changed. The resistance and breakdown voltage of the diode are determined by the amount of current being applied to the diode and the total voltage drop across the diode.The CDLL748 Zener diode has a number of advantages over other types of diodes. It offers a low-noise and low-power solution for applications that need higher performance. It also has good thermal stability and requires less current to operate, which in turn results in lower power consumption. The operating temperature of the diode can be adjusted to suit the application need. The main application of the CDLL748 Zener diode is in power supplies and other switch-mode power supplies. The diode is used as a clamping element to absorb voltage spikes which may occur when the switch-mode is turned on or off. This prevents damage to the circuit and reduces the occurrence of components being destroyed by the high voltages. The diode can also be used in other types of power supplies, such as DC-DC converters and linear power supplies, where it can be used as a current limiter or an overvoltage protection device.In addition to power supplies, the CDLL748 Zener diode can also be used in automotive and communication systems. In automotive systems, it can be used as a noise-reducing element in headlights and radios. In communications systems, it can be used as an overvoltage protection device to prevent damage due to power surges.The working principle of the CDLL748 Zener diode is based on the principle of a diode. When a current passes through the diode, the resistance of the diode changes in proportion to the voltage applied to it. When the voltage applied to the diode exceeds the breakdown voltage, the diode conducts and allows a current to pass through it. The current flow is then controlled by the breakdown voltage and the resistance of the diode.In conclusion, the CDLL748 Zener diode is a low-cost and low-power solution for a wide range of applications. It has a low-noise and low-power design, which makes it suitable for use in switch-mode power supplies, automotive systems, and communication systems. The diode is also highly adjustable, which makes it suitable for a range of applications and environments. Additionally, it can provide overvoltage protection and current limiting, ensuring that components remain safe and operational.

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