APT15DQ120BG

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APT15DQ120BG is a common diode, one type of rectifier, and a single device. It is popularly used in various applications, and the detailed working principles are commonly understood. Therefore, this article will focus on the application field and working principle of APT15DQ120BG.

Application Field

APT15DQ120BG is a silicon avalanche diode suitable for applications in the automotive, industrial, and medical fields. The 12 A continuous forward current and 15A peak surge current handling combined with low turn-On voltage provide an excellent low-loss, high-speed switching for HID lighting systems in vehicles. In the industrial field, it is suitable for use in variable frequency drives and various power supply applications. In the medical industry, it is mainly used in laser treatments, ultrasound machines, and X-ray machines, as well as in bypass diodes in solar cells.

Working Principle

APT15DQ120BG has a simple working principle. When forward biasing is applied, the device acts like a conventional diode, and charge carriers flow from the anode to the cathode. When the applied voltage reaches a certain critical value, called the avalanche breakdown voltage, electrons are accelerated to the point where ionization occurs and a large number of electron-hole pairs are created. This further increases the current and the voltage across the junction, leading to a sudden and significant increase in current flow. This is known as avalanche mode. The avalanche breakdown voltage and the power dissipation of APT15DQ120BG are usually specified under the " Typical Junction Characteristics" section in the datasheet.

In summary, APT15DQ120BG is a popular diode and rectifier. It works effectively and is applicable in various industries and applications, making it a favorable choice for many engineers. By understanding the application fields and the working principles, engineers can save time and effort finding the right device for the job.

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