ST5R002B

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Inrush Current Limiters (ICL) have been used for decades in business and industry to protect sensitive components during power-up. ST5R002B is a state-of-the-art device designed for controlling inrush current in AC-DC switch-mode power supplies. It is made with integrated circuit chips and specialized components mounted on a PCB board. Its function is to limit the inrush current during power-on, enabling reliable switching with fewer noise and interference. In this article, we will discuss the application field and working principle of the ST5R002B.

The application field of the ST5R002B is wide. It can be used in electronic switching power supplies, such as those in personal computers, TVs, air conditioners and other consumer electronics. It is also applicable in many industrial applications, such as the AC-DC power converters used in automotive, aviation and aerospace, LED lighting, medical equipment, therapeutic devices and communications equipment. In these applications, the ST5R002B can provide protection against overvoltage, overcurrent, and overheat, helping to ensure the safety and reliability of the power system.

The working principle of the ST5R002B is based on the inrush current limitation effect. It utilizes the boost transformer (BT) and switching component (SC) to work in concert. When the AC power is connected, the current through the BT increases rapidly. The BT produces a voltage across the SC to restrict the current from flowing through it. This initial voltage is above the switch-on voltage of the SC, causing it to remain off until the current has been limited. Then, the SC will start up, allowing the current to flow, thus providing a “soft start” of the power supply. The restricted current will eventually go below the hold-off voltage of the SC, resulting in its turn-off and ending the inrush current limiting process.

Furthermore, the ST5R002B includes several protection features which provide additional security to the power system. First, it can detect the over-voltage and disconnect the power supply to protect the critical load from being damaged. Secondly, it is designed with the circuitry and components of reasonable size, so that the AC input voltage is tightly regulated and the fan noise is reduced. Lastly, the device is equipped with a thermal shut down feature to protect the power supply against excessive heat.

Additionally, the ST5R002B has a number of features that make it convenient and easy to use. First, the device has a small size and light weight, which reduces the costs of installation and maintenance. It also has a wide operating temperature range and a wide operating voltage range. Lastly, it is compatible with different AC power sources which makes it suitable for use in a variety of applications.

In conclusion, the ST5R002B is a compact, high-performance device for controlling inrush current in AC-DC switch-mode power supplies. It prevents overvoltage and overcurrent as well as providing a soft start for the power supply. With its built-in protection features, small size and competitive pricing, it is an ideal choice for many applications in business and industry.

The specific data is subject to PDF, and the above content is for reference