SMF58AHRQG Circuit Protection

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

Introduction:
SMF58AHRQG is a type of Thyristor Surge Protective Device (TSPD). It is designed to provide high level transient overvoltage protection for power distribution systems. This device was developed by Nexperia and is used in many different applications including industrial control (lighting and security), communication systems (telephone, radio, and data networks) and home entertainment (video systems). In this article, we will explore the application fields and working principle of the SMF58AHRQG.

Application fields:
SMF58AHRQG is widely used for controlling overvoltages in different environments, such as industrial control (lighting and security), communication systems (telephone, radio, and data networks), and home entertainment (video systems). It can prevent equipment damage and improve system reliability due to high voltage surges. It is also suitable for use in power distribution networks, where it can help to protect against over-current, over-voltage, and surges. Additionally, it can be used in motor starters and residential electrical systems to limit damage caused by lightning strikes.

Working principle:
SMF58AHRQG works on the principle of thyrite action. It uses a thyrite switch to control the flow of current, and thus limiting the amount of over-voltage which can pass through it. The thyrite switch is operated by a trigger voltage, which is determined by the turn-on voltage of the device. Once the turn-on voltage is reached, the switch will turn on and the related circuit will be closed, allowing the current to flow. The thyrite switch is designed to switch on and off in a fraction of a second, allowing it to react quickly to changes in the voltage level.

Once the circuit is closed, the SMF58AHRQG then act as a current limiting device. It utilizes an integrated varistor to regulate the voltage and prevent it from exceeding the maximum working level. This varistor is composed of two layers of semiconductor material, and as the voltage increases, the varistor increases its resistance. This resistance stops the current from rising over the set voltage level. As the voltage is dropped, the resistance of the varistor gradually decreases and allows the current to flow again.

SMF58AHRQG can be used in a variety of applications ranging from home entertainment (video systems), communication systems (telephone, radio, and data networks), industrial control (lighting and security) and power distribution networks. It provides superior transient surge protection for all these applications, ensuring that equipment is properly protected and increased system reliability is achieved.

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