NHQT400B285T5

Series:	NHQ
Packaging:	Bulk
Part Status:	Obsolete
Resistance in Ohms @ 25°C:	40
Resistance Tolerance:	±5%
B Value Tolerance:	±5%
B0/50:	--
B25/50:	--
B25/75:	--
B25/85:	2850K
B25/100:	--
Operating Temperature:	-40°C ~ 125°C
Length - Lead Wire:	--
Mounting Type:	Surface Mount
Package / Case:	0402 (1005 Metric)

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Introduction

NTC thermistors are temperature sensors that use the NTC thermistor principle. NTC stands for Negative Temperature Coefficient, meaning that as the temperature increases, resistance goes down. They are widely used to measure temperature and as temperature compensation elements. The NHQT400B285T5 is a specifically designed NTC thermistor for use in a variety of applications. In this article, the application field and the working principle of NHQT400B285T5 will be discussed.

Application Field

The NHQT400B285T5 is designed for general-purpose temperature measurement. With its wide range of operating temperatures and accuracy, it is suitable for many applications, such as:

• Industrial process control
• Air conditioner controllers
• Automotive HVAC system control
• Hot water and heating systems
• Medical temperature monitoring

The NHQT400B285T5 is also designed for low power consumption, making it a suitable choice for battery operated devices. It is available in a compact, space-saving package, making it ideal for densely populated circuit boards.

Working Principle

The NHQT400B285T5 is an NTC thermistor, which means that its resistance decreases as the temperature rises. The thermistor has a characteristic temperature versus resistance response; meaning that for a given temperature, there is a corresponding resistance. The resistance of the thermistor is then measured using a voltmeter or other device. The voltage measurement is then converted to resistance, which is then passed through an equation to determine the temperature. The NHQT400B285T5 has an operating temperature range from -55°C to 125°C. It has a linear response, meaning that its resistance is a linear function of temperature. The linearity ensures accuracy over a wide temperature range. The NHQT400B285T5 also has a low self heating, meaning that the thermistor does not generate much heat when operated, ensuring accurate temperature readings.

Conclusion

The NHQT400B285T5 is a temperature sensor designed for a variety of applications. It operates on the NTC thermistor principle and has a wide operating temperature range and a linear response. It is low power, compact, and has low self-heating, all of which make it an ideal choice for applications requiring accurate temperature measurements.

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