NHQM303B400T5

Series:	NHQ
Packaging:	Tape & Reel (TR)
Part Status:	Active
Resistance in Ohms @ 25°C:	30k
Resistance Tolerance:	±5%
B Value Tolerance:	±5%
B0/50:	--
B25/50:	--
B25/75:	--
B25/85:	4000K
B25/100:	--
Operating Temperature:	-40°C ~ 125°C
Length - Lead Wire:	--
Mounting Type:	Surface Mount
Package / Case:	0805 (2012 Metric)

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Introduction

The NHQM303B400T5 is an NTC thermistor, a type of temperature sensor used for temperature measurement and control applications. This particular model has a resistance of 303 Ohms at 25°C (77°F). It is a programmable device, meaning that its resistance changes over a range of temperatures. This type of thermistor is more accurate, stable, and reliable than traditional thermistors, such as RTD and RTD-type thermistors, making it ideal for temperature measurement and control.

Application Field of the NTC Thermistor

The NTC thermistor is a popular choice for a wide range of temperature sensing applications, ranging from consumer electronics to industrial and heating systems. Its reliability and accuracy makes it ideal for both temperature measurement and control. It is also well suited for medical applications, such as MRI and medical imaging systems.In consumer electronics, the NTC thermistor is used to measure the temperature of devices, such as laptops, smartphones, and tablets. It can also be used to measure the temperature of automotive components, such as engine oil sensors. It is also used to measure the temperature of home appliances, such as electric ovens, washers, and dryers.

Working Principle of the NTC Thermistor

The NTC thermistor works on the principle of resistance variation over temperature. As the temperature increases, the resistance of the thermistor decreases. The resistance of the thermistor is measured using an external circuit, with the resulting voltage/current indicating the temperature of the sensor.The resistance of the NTC thermistor changes exponentially over temperature. This is called the “Exponential Temperature Coefficient (ETC)”. The ETC is a value expressed in ohms/degree Celsius. The ETC of the NHQM303B400T5 thermistor is -3.48 ohms/°C. This indicates that as the temperature increases by 1°C, the resistance of the thermistor decreases by 3.48 ohms.

Conclusion

The NHQM303B400T5 is a reliable, accurate, and cost-effective NTC thermistor for temperature measurement and control applications. Its wide range of applications makes it an ideal choice for measuring temperature in a variety of settings, including consumer electronics, automotive components, and home appliances. Its working principle is based on the principle of resistance variation over temperature, with an exponential temperature coefficient of -3.48 ohms/degree Celsius. The NHQM303B400T5 provides a robust and reliable solution for temperature sensing applications.

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