PTFT0805L1501JW

Series:	PTFT
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Resistance @ 25°C:	1.5 kOhms
Resistance Tolerance:	±5%
Operating Temperature:	-55°C ~ 125°C
Power - Max:	100mW
Mounting Type:	Surface Mount
Package / Case:	0805 (2012 Metric)
Supplier Device Package:	0805

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Temperature Sensors - PTC ThermistorsPTC (positive temperature coefficient) thermistors are temperature-sensitive resistors that exhibit a positive temperature coefficient, meaning their electrical resistances increase as temperature rises. The PTFT0805L1501JW is one such type of PTC thermistor. It is an 805-sized package intended for surface-mount application and features thermally sensitive metal oxide semiconductors. PTFT0805L1501JW has a nominal resistance of 1500 ohm at 25°C.PTFT0805L1501JW is capable of accurately detecting small changes in temperature, exhibiting a high sensitivity of the resistance to temperature variation, reverse break down behaviour, and low beta change. The device offers good stability in long-term operation and repeatability of resistance at the same temperature. It features a very low dissipation factor, and its low self-heating reduces thermal bias by a few degrees.Application FieldPTFT0805L1501JW is used in various applications such as temperature compensation for voltage reference, temperature sensing, slow start for motor starters, current limiting circuits, precision temperature measurement, and electronic counter temperature compensation. It is specified to work in a wide temperature range from –45 °C to 150 °C.In general, this thermistor can be used in a wide variety of commercial applications such as white goods, HVAC, power supplies, motor drivers, street light controllers, and medical equipments.Working PrincipleThe PTC thermistor functions on the principle of the Seebeck effect. This effect refers to the phenomenon where the junction between two dissimilar metals produces a voltage when exposed to a temperature difference. In other words, when the thermistor is exposed to a temperature change, the electrons in the junction experience a change in energy levels, thus generating a small voltage.The PTFT0805L1501JW thermistor utilizes this Seebeck effect to measure the temperature accurately. The thermistor is composed of a metal oxide material, which is encased in a small resistor package. The resistive elements within the package are then exposed to temperature changes, which causes the resistance of the material to change. As the resistance changes, a voltage is produced which can be used to measure the temperature of the thermistor accurately.ConclusionThe PTFT0805L1501JW is an 805-sized, PTC thermistor designed for surface-mount applications. It offers high sensitivity to temperature changes, reverse breakdown behaviour, low beta change, and long-term stability. It features a nominal resistance of 1500 ohm at 25°C and is specified to operate in a wide temperature range from –45 °C to 150 °C. Ultimately, it can be used in a variety of applications ranging from temperature compensation for voltage references to electronic counter temperature compensations.

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