NTCALUG03A473HC

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Temperature Sensors - NTC Thermistors

The NTCALUG03A473HC is a negative temperature coefficient, or NTC, thermistor. NTC thermistors are temperature sensitive semiconductors made of metal oxides that display a decrease in resistance when the temperature around them increases. Consequently, NTC thermistors are used as temperature sensing devices in a variety of electronic and industrial applications.

Application field

NTCALUG03A473HC thermistors are used primarily as current protection elements in the electrical and electronic industry. They are able to sense changes in temperature and reduce the risk of component malfunction when exposed to unpredictable environmental changes. This is due to the low thermal time constants thermistors have compared to other temperature sensors. This allows them to more rapidly detect and respond to changes in temperature.

NTCALUG03A473HC thermistors are also used in a variety of temperature measurement applications, including those involving liquids. Their ability to measure temperatures quickly makes them popular in medical, refrigeration and process control systems, where they provide accurate and reliable measurements. Other common application areas include liquid surface temperature measurement, filter alarms, temperature protection relays and temperature-related actuators.

Working principle

NTCALUG03A473HC thermistors are composed of metal oxides contained within a ceramic shell. This structure is what gives them their resistance-temperature (RT) characterizing properties. Essentially, when the temperature around the thermistor increases, its resistance decreases. This relationship is not linear however, and is instead expressed as a logarithmic curve, as shown in the figure below.

This logarithmic characteristic is the main difference between NTC thermistor sensors and other types of temperature sensors. It allows them to more quickly detect and respond to changes in temperature compared to other types of temperature sensors.The NTCALUG03A473HC is also a commonly used thermistor for temperature control and detection. This is because it has a relatively wide temperature range, making it suitable for a variety of different types of applications. Its temperature range extends from -40°C to +150°C with a resistance range of 47kohm to 3.3kohm, and a rated power of 500mW.

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