DL5249B-TP Discrete Semiconductor Products

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Diodes - Zener - Single category can provide a wide range of diodes from various manufacturers, like Pan Jit, ON Semiconductor, Vishay, Infineon, Diodes Incorporated, Microsemi, STMicroelectronics, etc. As for DL5249B-TP, it belongs to this category, and this article will explain its application field and working principle.

Application field: DL5249B-TP is a diode designed for rectifier and voltage regulation. It is a Zenner diode designed for the high voltage application, and the maximum reverse voltage it can manage is 400V. It has high stability and low power loss, making it suitable for use in voltage regulation and power supply applications. Typical applications include rate converters, three phase converters, DC-DC converters, etc.

Working principle: DL5249B-TP is a Zenner diode that works by allowing current to flow through one of the two conductive terminals, known as the Anode and Cathode. It works on the principle of a reversed biased diode. When the diode is in reverse junction, the electric field created between the Anode and Cathode will force a constant voltage across them regardless of the current being drawn, which is why it is ideal for applications in voltage regulation. The breakdown voltage of DL5249B-TP is usually around 375V. When the voltage applied is above 375V, the voltage across the terminals will remain constant regardless of the current.

To maximize performance and stability, DL5249B-TP requires a very low series resistance. This can be achieved by using a low resistance substrate material, like mica or diamond, or by connecting two or more diodes in series. To increase safety, it is recommended to use a rated diode with a larger breakdown voltage than the connected load.

A typical application of the DL5249B-TP is as a voltage regulator in power supply systems. The diode can either act as a part of a shunt regulator, controlling the output of the system, or as part of a series regulator, limiting the voltage from passing through to the system.

When used as part of a shunt regulator, the diode is connected in parallel with a load in order to provide a constant output voltage. When the voltage exceeds the breakdown voltage of the diode, the diode will start to conduct and limit the output voltage. This limits the amount of current the load can draw, providing protection to the system.

The DL5249B-TP can also be used in series regulators, which limit the current flowing through the system. In this setup, the diode is connected in series with the load and a voltage source. When a voltage is applied, the voltage across the diode will only reach the breakdown point when the current flowing through it exceeds the reverse leakage current.

In either case, the DL5249B-TP is a reliable and cost-effective solution for applications in voltage regulation. It offers high breakdown voltage, low series resistance, and low power loss, making it suitable for a wide range of applications. It is available in a variety of packages and with a wide range of specifications, making it a versatile and cost-effective choice for voltage regulation.

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