NHQMM204B425T5

Series:	NHQ
Packaging:	Tape & Reel (TR)
Part Status:	Active
Resistance in Ohms @ 25°C:	200k
Resistance Tolerance:	±5%
B Value Tolerance:	±5%
B0/50:	--
B25/50:	--
B25/75:	--
B25/85:	4250K
B25/100:	--
Operating Temperature:	-40°C ~ 125°C
Length - Lead Wire:	--
Mounting Type:	Surface Mount
Package / Case:	0603 (1608 Metric)

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NTC Thermistors – NHQMM204B425T5 Application Field and Working Principle

NTC thermistors, also known as negative temperature coefficient thermistors, are types of temperature sensors. The NHQMM204B425T5 thermistor is a common NTC thermistor that is used in a wide array of applications. This article will discuss the application field and working principle for the NHQMM204B425T5 thermistor.

Application Field

The NHQMM204B425T5 thermistor has a broad range of applications. Commonly, the thermistor is used in temperature measurement and sensing for medical, automotive, industrial, and household devices such as digital thermometers, heating systems, air conditioners, water heaters, and microwave ovens. Additionally, due to its small size, the NHQMM204B425T5 has great potential in miniaturized circuit boards and data loggers that require efficient temperature sensing. The thermistor\'s wide range of application is mainly derived from its ability to accurately measure small temperature fluctuations and its long-term stability without drift. The combination of these two characteristics makes the thermistor an ideal choice for use in applications requiring accurate temperature sensing or measurements.

Working Principle

The working principle of the NHQMM204B425T5 thermistor is very simple. The thermistor is composed of a semicon-ductor material, usually made of a ceramic, that has been doped with metal oxide. This mixture of ceramic and metal oxide gives the thermistor its temperature-sensing abilities. When the thermistor is exposed to a temperature change, its resistance to the flow of current changes as well. This resistance change is inversely proportional to temperature, meaning that as the temperature rises the resistance of the thermistor decreases. Conversely, as temperature decreases, the resistance of the thermistor increases.The rate at which the thermistor\'s resistance changes is determined by its "beta value". The beta value is a number that represents the resistance slope of the thermistor and is usually given in kelvin (K). The NHQMM204B425T5 thermistor has a beta value of 2500 K, meaning that its resistance decreases by 2500 ohms for each degree Kelvin increase in temperature.

Conclusion

The NHQMM204B425T5 thermistor is a widely used temperature sensor that is employed in a myriad of applications such as digital thermometers, heating systems, air conditioners, water heaters, and microwave ovens. The thermistor works by changing its resistance inversely with temperature, meaning it decreases resistance for an increase in temperature and increases resistance for a decrease in temperature. This change in resistance is determined by the thermistor\'s beta value, which for the NHQMM204B425T5 thermistor is 2500K.

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