PTFT0603L4701JV

Series:	PTFT
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Resistance @ 25°C:	4.7 kOhms
Resistance Tolerance:	±5%
Operating Temperature:	-55°C ~ 125°C
Power - Max:	75mW
Mounting Type:	Surface Mount
Package / Case:	0603 (1608 Metric)
Supplier Device Package:	0603

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Introduction to PTC Thermistors

Temperature Sensors - PTC Thermistors, or Positive Temperature Coefficient Thermistors, are thermistors that have a positive temperature coefficient (PTC) instead of a negative temperature coefficient (NTC) like most thermistors. This means that instead of resistance decreasing with an increase in temperature, the resistance increases with an increase in temperature. In addition, PTC thermistors have highly predictable characteristics when heated due to the almost non-linear current-voltage or I-V curves they display.

Application Field of PTFT0603L4701JV

The PTFT0603L4701JV is a particular type of PTC thermistor, as it is classified as a glass-passivated device of the NTC family. It is popular for industrial applications such as temperature control, motor protection, current limiting, overvoltage protection, and thermal cutoff use, due to its ability to quickly sense the increase in temperature and act accordingly.It is also commonly used in automotive applications, due to its resistance to thermal shock, its current ranging capabilities, and its low thermal resistance. Furthermore, its low thermal mass makes the PTFT0603L4701JV ideal for use in heat pumps, air conditioning systems, and other air conditioning applications.

Working Principle of the PTFT0603L4701JV

At its simplest, the PTFT0603L4701JV operates by detecting changes in temperature and responding accordingly. As the temperature increases, the resistance of the device increases as well. This increase in resistance corresponds to a decrease in current flow, limiting the amount of current that can be passed through the device. For example, if the PTFT0603L4701JV is used as a thermal overload protection device, then as the temperature increases, it will limit the amount of current that can pass through its terminals. This in turn will help to prevent any catastrophic damage to the motor or system in which it is installed.The PTFT0603L4701JV is also an ideal device for temperature compensation requirements. It can be programmed to respond to a certain temperature and to then react with a specific current limit. This makes it highly effective for use in industrial systems where precise control is essential.

Conclusion

The PTFT0603L4701JV is a highly effective and popular PTC thermistor due to its ability to quickly sense and respond to temperature fluctuations, making it ideal for use in a wide range of industrial and automotive applications. Its predictable characteristics and resistance to thermal shock, high current loads, and low thermal mass make it a great choice for protecting motors, controlling temperature, and other temperature-sensitive applications.

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