PD3Z284C18-7

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Diodes are electronic components that allow the flow of electrical current in one direction while blocking it in the other. Zener diodes are a type of diode that permits the current flow in either direction, but keeps it constant by regulating the voltage. This type of diode is widely used in circuits to control the voltage level, providing a reliable and stable power supply. Single Zener diodes are the most basic type of Zener diodes, consisting of a single semiconductor junction, and finding applications in devices such as small-power supply handling, voltage-shift switches, and USB 3.0 power delivery.

PD3Z284C18-7 is a single Zener diode component from NXP Semiconductors with a voltage rating of 40V and an operating current of 0.5mA. It is made of an epoxy package and comes with a maximum power rating of 250mW. This diode also offers a low reverse current leakage current, making it very efficient in delivering power. Additionally, this diode has a low forward voltage drop, resulting in low power dissipation.

Application Field

PD3Z284C18-7 has various applications in electronic circuits. This diode can be used in voltage-regulated circuits to protect connected devices from power fluctuation incidents. It can also be used as a low-power booster diode to provide positive output or better stability. Additionally, this diode can be used in powered USB 3.0 connections, typically in devices such as laptops and smartphones. It can also be used as a temperature indicator in devices such as food thermometers or thermocouples, where it delivers the necessary inputs to measure and display temperatures.

Working Principle

A single Zener diode consists of two connectors, the anode and the cathode. In the circuit, the anode is always connected to the voltage source and the cathode to the ground. While in a normal diode the current only flows from the anode to cathode, the Zener diode allows for the current to move in both directions. Since the voltage source is generated by a current flow, the voltage across the Zener diode is greater when more current is added. When the voltage level rises above the Zener’s critical voltage level, known as the Zener voltage, the diode begins to conduct in the reverse direction, and the current flow is clamped to the value known as the Zener current.

In the case of PD3Z284C18-7, the Zener voltage is 40V and the Zener current is 0.5mA. This means that the diode allows the current flow until the voltage level reaches 40V. Once the maximum voltage is achieved, the current is clamped to the 0.5mA level, and the voltage stays constant. This behavior helps to keep the voltage level under control, ensuring proper protection of connected devices.

To conclude, PD3Z284C18-7 is a single Zener diode from NXP Semiconductors with a voltage rating of 40V and an operating current of 0.5mA. This diode is widely used in electronic circuits to provide stable power with low reverse current leakage. It also provides voltage regulation and is suitable for applications such as USB 3.0 power delivery, temperature measurement, and power supply handling.

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