NTC Thermistors: All You Need To Know About It

by Sanjeev Yadav SEO Consultant Every resistor is dependent on temperature to a great extent which is defined by its temperature coefficient. Among the most prominently used semiconductor resistors, Negative Temperature Coefficient (NTC) thermistors are the leading ones. These are ceramic semiconductors that are thermally sensitive and they display a fall in resistance as there is an increase in absolute temperature. The resistance of an NTC thermistor can be brought about by bringing a change in the overall ambient temperature. It can also be changed internally as a result of self-heating caused due to the current flowing inside the device.

Disc Type NTC Thermistors offer a resistance value that ranges from 1.0 ohms up to 500,000 ohms. These devices work perfectly for a varying range of resistance values along with temperature coefficients in regards to low resistance as well as temperature coefficients with regards to very high resistance values. The standard resistance tolerance usually ranges from 5% to 20%; which is usually specified at 25 degrees Celsius or the operating temperature of the respective thermistor.

Disc Type NTC Thermistors Supplier in India ensures the delivery of the best quality of products that offer precision resistance tolerance to 1%. Some key points about these resistors are noted as follows:

How Thermistor Technology Is Used For Temperature Measurement?

• Thermal Time Constant: The time that is necessary to change the overall variation to about 63.2%, between the initial and final body temperature. It is measured when it is exposed to a step function change to the temperature.

• Dissipation Constant: it is the ratio that exhibits the change in dissipated power in a thermistor with respect to the resultant alteration to the body temperature, at a particular ambient temperature.

• Temperature Coefficient Or Resistance: the rate with which the zero-power resistance with temperature changes in regards to zero power resistance of the thermistor at a specified temperature.

How Does A Thermistor Function?

An NTC Thermistor can be of excellent use and offer several advantages when it comes to sensing the temperature. This includes very sensitive monitoring and measurement in the change of temperature. This feature makes the device a highly accurate and very precise way to measure the change in temperature. They are not just very cheap but are capable of monitoring a temperature range of -40◦C to +300◦C.

How To Choose The Most Appropriate NTC Thermistors?
While looking at an NTC Thermistor, a few points are needed to be considered. The Disc Type NTC Thermistors Manufacturer produces a wide range of these semiconductors which can fit the specific needs very efficiently.

• The dissipation of power is a common problem that comes up when these thermistors are being used. If the dissipation constant is exceeded by the power dissipated, self-heating will be exhibited by the semiconductor.

• A higher degree of accuracy needs to be maintained while measuring temperature changes. And this can be done by ensuring that the temperature error which self-heating causes should be an order of magnitude. And, it should be less than the sensory accuracy that is required.

What Are The Applications Of NTC Thermistor?

There are several important applications of the NTC Thermistor, which are as follows:

• NTC Thermistors can be a very useful tool in building simple fire alarms.

• The temperature controllers in mobile phones, refrigerators, and so on are created using these thermistors.

• Monitoring the temperature of a room at a specific level.

• Devices that are used for temperature measurement and monitoring of exhaust gas.

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Created on Feb 9th 2021 23:38. Viewed 87 times.

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