CDLL5245

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CDLL5245 Application Field and Working Principle

CDLL5245 is a diodes of the Zener class, single type. It is used in a wide range of commercial, industrial, and home applications. Its main purpose is to limit the current or voltage in a circuit.

The CDLL5245 is a low-power Zener diode, composed of a single pn junction manufactured in a planar construction. It is designed to be used in both digital and analog circuits where a stable, low-loss voltage reference is needed. It features low capacitance, low forward voltage drop and low leakage current.

The CDLL5245 has a breakdown voltage of 5.2 V, a dynamic resistance of 6.5 Ω, a thermal resistance of 120 K/W and a power dissipation of 2.75 W. Its zener rating is 5.2V ± 0.2V. Its junction temperature range is -55°C to +175°C. It is available in a SOT323 package.

Working Principle

The main working principle of a Zener diode or CDLL5245 is reverse-bias breakdown. When the diode is connected to a reverse bias voltage, a low current flows through the diode. As the voltage rises, the current through the diode increases, until the diode reaches its reverse breakdown voltage. At this point, the voltage across the diode remains constant, and a large current can flow through the diode. This is termed as the Zener breakdown voltage. This voltage is generally stable, even as the current through the diode increases.

The voltage reference and the power regulation of the CDLL5245 is achieved by the combination of a resistor and the diode in series. When the voltage across the diode is regulated, the current through the resistor is regulated. The voltage reference is provided by the forward voltage drop and the losses created by the forward resistance. This regulates the current and maintains the output voltage.

Applications

The wide range of applications of the CDLL5245 diode can be seen in communication systems, computer equipment, radio and TV receivers, power supplies, and automotive circuits. Its temperature range makes it suitable for use in operating temperature environments, and its zener rating provides a stable voltage reference.

The CDLL5245 can be used in computers and embedded systems as a voltage regulator or as a reference or protection circuit, such as a protector against over-voltage, under-voltage, or short circuit. It can also be used in power supplies for stabilizing the output voltage and for limiting the current in the circuit.

In automotive circuitry, this diode can be used for EMI reduction and over-voltage protection. It can also be used for current limiting, surge protection, and voltage regulating in LED lighting applications.

In radio and TV receivers, the diode provides the bias voltage for the transistor amplifier. It can also be used for the supply voltage of PLL circuits.

In addition to these applications, the CDLL5245 can also be used in other home and industrial applications. It can be used as a voltage regulator, protection element, and reference or protection circuit.

The CDLL5245 is a low power, single Zener diode, used in a wide range of applications. Its main purpose is to provide a stable voltage reference and limit the current or voltage in a circuit. Its wide temperature range and low capacitance make it suitable for use in a variety of high-performance applications.

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