PTGL09AR390N0B52A0 Circuit Protection

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Introduction

PTC Resettable Fuses are a type of fuse used to protect electrical circuits and components from overcurrent. They are an alternative to traditional fuse technology and can be reset manually or by the application of an overcurrent. The model number PTGL09AR390N0B52A0 is a PTC Resettable Fuse from a leading supplier. This article will cover the application field and working principle of the PTGL09AR390N0B52A0.

Application Field

The PTGL09AR390N0B52A0is designed for use in home and automotive electronic systems such as computers, AM/FM radios, TV remote controls and other similar circuits. It provides protection against over-currents resulting from surges or power fluctuations and is suitable for use with ICs, transistors and electrolytic capacitors. It is also ideal for use with lightweight electrical components that may require frequent resetting, as the fuse can be manually reset without having to disassemble the circuit.

Working Principle

The PTGL09AR390N0B52A0 uses a thermistor and a resistive element to detect a dangerous current level. When a current surpasses the pre-set threshold level, the thermistor\'s temperature rises rapidly. This action causes it to become resistive, and as a result, the current passes through the thermistor element instead of the normal current path. The additional load created by the thermistor leads to a voltage drop, reducing the power of the circuit and ultimately preventing component damage. Once the current is removed or reduced to a safe level, the thermistor cools down and returns to its original state. This process allows the fuse to be reset and continue its normal function, protecting the circuit.

Conclusion

The PTGL09AR390N0B52A0 is a PTC Resettable Fuse designed for use in home and automotive electronic systems. It is suitable for use with ICs, transistors and electrolytic capacitors, and its reset feature makes it ideal for use with lightweight electrical components that may require frequent resetting. The working principle of the fuse involves the use of a thermistor and a resistive element to detect dangerous current levels. When the temperature of the thermistor rises, it becomes resistive, causing a voltage drop and ultimately preventing component damage. The fuse can be reset manually or by the application of an overcurrent, allowing it to continue its normal function of protecting the circuit.

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