USP10972

Series:	USP
Packaging:	Bulk
Part Status:	Active
Resistance in Ohms @ 25°C:	10k
Resistance Tolerance:	±1%
B Value Tolerance:	--
B0/50:	3892K
B25/50:	--
B25/75:	--
B25/85:	--
B25/100:	--
Operating Temperature:	-55°C ~ 105°C
Length - Lead Wire:	49.50" (1.25m)
Mounting Type:	Free Hanging
Package / Case:	Cylindrical Probe, Stainless Steel

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Introduction

NTC thermistors, also known as negative temperature coefficient thermistors, are temperature sensors used in many electronic applications. They have a very low up-front cost compared to other temperature sensors, yet they are highly accurate, and offer flexibility in terms of temperature range and sensitivity. A USP10972 is a particular type of NTC thermistor that is used for a variety of applications. This article will discuss its application field and working principle in detail.

Application Field

USP10972 thermistors are mostly used in HVAC, automotive and medical industries for temperature sensing applications. In HVAC applications, USP10972s can be used as a temperature sensor in an air conditioning system to maintain the desired temperature. In automotive applications, they are used for engine and battery temperature control, primarily in the powertrain control module. In medical applications, these thermistors are used for liquid temperature sensing in medical radiators, or for measuring temperature in the cooling unit of a laboratory.

Working Principle

The USP10972 is a standard NTC thermistor with a 10 kΩ resistance at 25°C. It works on the principle of negative temperature coefficient (NTC). This means that as the temperature around the thermistor increases, the resistance of the thermistor decreases in an exponential manner. This phenomenon is caused by changes in the charge carriers in the thermistor due to temperature, which leads to changes in the conductivity.

Advantages

One of the major advantages of the USP10972 is its accuracy. It is highly accurate and can provide readings accurate to within 1°C. This makes it ideal for temperature sensing applications in which the accuracy of the readings is important. Another advantage is its wide temperature range, which means that the thermistor can be used in a variety of applications, from low temperature applications such as cryogenics to high temperature applications such as power transformers. The USP10972 also has a low up-front cost and is easy to install and replace as needed. Additionally, the thermistor is very durable and can withstand high temperatures up to 135°C and high humidity up to 95%.

Disadvantages

One of the major disadvantages of the USP10972 is its slow response time. It takes a few seconds for the thermistor to detect temperature changes, making it unsuitable for applications where fast response time is required. Additionally, it has low power capacity, making it unsuitable for applications that need to measure high temperatures or high currents.

Conclusion

The USP10972 thermistor is a well-known NTC thermistor used in many applications. It is accurate, durable, has a wide temperature range, and is relatively inexpensive. Despite its advantages, it does have some disadvantages, such as its slow response time and its low power capacity. When choosing a thermistor for an application, it is important to consider not only its advantages and disadvantages, but its overall performance characteristics.

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