TFPT0603L6800FM

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

Temperature Sensors - PTC Thermistors

Overheating sensors are often used to keep sensitive equipment safe from too much heat. Poly-Switch PTC Thermistors, or positive temperature coefficient thermistors, are one type of device used to protect equipment, detect faults and regulate temperature. The TFPT0603L6800FM is a typical example, which we will use to explain the general working principles and application fields of the PTC Thermistors.

The TFPT0603L6800FM PTC thermistor is a ceramic based resistive device that activates when the specific temperature is reached. It is an inexpensive and reliable way to detect when the temperature have exceeded a certain specified threshold, typically set with user creativity. A current is passed through the thermistor, causing a resistance value related to temperature. The resistance value changes with temperature, hence the name “thermistor”. When the temperature increases, the resistance value would increase as well, and vice versa when the temperature decreases.

Since PTC thermistors have a positive temperature coefficient, they get hotter as the current passing through them increases. For the above mentioned TFPT0603L6800FM thermistor, when the temperature reaches a certain point, the resistance value will increase exponentially. The sudden increase in resistance cuts off the flow of the current, in which moment it acts like a switch. It is this reaction of going suddenly from low impedance to high impedance when the temperature reaches a set point that makes the thermistor act as an overheating protection.

The PTC thermistors, as the temperature sensors, are widely used in modern electronic circuits for protecting engines, motors, refrigerators, lights and other domestic and industrial appliances from too high temperatures by cutting off the power supply. In the circuit, it works as a switch between the power and the load, automatically breaking the circuit once the temperature is getting too hot to protect the equipment. At the same time, the resistance value of the TFPT0603L6800FM thermistor can be also adjusted to allow unstable circuits, such as those including a fuse, to be stabilized. Therefore, aside from its application in overheating protection, it is also a reliable component for temperature control.

In conclusion, the TFPT0603L6800FM PTC Thermistor is a device used for both overheating protection and temperature control. Its resistance value increases exponentially when the temperature reaches a certain set point, in which moment the circuit gets cut off to protect the appliances, or it is used to stabilize unstable circuits for temperature control. The advantage of using this thermistor is that it is inexpensive and reliable, being used in many electronic circles for different applications.

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