NTCS0805E3103GHT

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Temperature Sensors - NTC Thermistors

Temperature sensing has been extensively studied and utilized in regimes ranging from medical science and nuclear power plant construction, to thermal management and aerospace applications. One of the most broad-scoped and versatile temperature sensors in the electronics industry is the negative temperature coefficient thermistor (NTC). NTC thermistors are semiconductors comprised of metal oxides that provide a resistive response that varies with temperature.

The NTCS0805E3103GHT, manufactured by Panasonic, is a small-sized chip thermistor with a resistance of 10 kΩ at 25°C. It is suitable for a wide variety of applications such as electronic appliances, automotive systems, telephone systems, communications equipment, and home electronics. The thermistor consists of a small ceramic chip with a pair of leads embedded in plastic. It has a fast response time of 2.5s, wide operating temperature range of -40°C to +125°C and a high accuracy of ±0.5°C.

The NTCS0805E3103GHT utilizes the physics of the temperature coefficient of resistivity to monitor changes in temperature. The electrical resistance of the thermistor varies in an inverse relationship with the temperature. When the surrounding temperature rises, the resistivity of the thermistor falls. Measuring the resistivity of the thermistor is a simple and reliable way of monitoring temperature fluctuation in a system.

The device is constructed with a small, highly-temperature-sensitive sensing element that is mounted into a plastic housing with two positive terminals. This facilitates the insertion of the device into the circuit where the temperature is to be monitored. When the temperature of the environment varies, the resistance in the thermistor will vary too. As the thermistor’s resistance varies owing to a temperature change, the current in the circuit changes correspondingly. This current can be measured and used to determine the ambient temperature.

The NTCS0805E3103GHT’s small size and wide variety of operating temperatures and accuracy make it an ideal choice for many temperature sensing applications. It is suited for both thermal control and safety applications in small, high-volume devices such as wearable electronics and HVAC systems. It can also be used in precision analogue and digital temperature sensors to accurately monitor environmental conditions and adjust system parameters or trigger alarm warnings in case of dangerous temperature shifts.

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