BR42KB105M

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NTC thermistors, or more commonly known as Negative Temperature Coefficient thermistors, are components that exhibit a decrease in resistance as temperature rises. BR42KB105M is an example of an NTC thermistor and its applications extend to temperature sensing, current-limiting, and surge suppression. A brief overview of its working principle and applications are discussed in this article.

Working Principle of BR42KB105M

The BR42KB105M thermistor is composed of a ceramic material containing bismuth oxide. Its semiconductor material composition results in its resistance greatly changing when temperature alters. The resistance typically decreases as the temperature increases. However, the most useful aspect of BR42KB105M thermistors is that the rate of change of resistance is significantly higher in comparison to other temperature-sensing elements. This allows thermal protection circuits to be constructed more accurately and responsively.

Application Fields of BR42KB105M

BR42KB105M thermistors are used in a large variety of applications, such as temperature sensing, current-limiting, and surge suppression. Temperature sensing is primarily used in the detection and control of temperature in environment control and industrial applications, which requires an accurate output. Temperature sensing using BR42KB105M thermistors can be used in thermostats and temperature switches due to its high sensitivity. As for current-limiting, this requires a precision current limiter that is able to protect a device from overloads by cutting the power supply when the current is beyond the predetermined value. As a result, BR42KB105M thermistors can be used in many industrial devices that require current limiters. Finally, the application of surge suppression requires a device that is able to reduce the level of current flow by dissipating it in a controlled manner. As such, the fine resistance changing feature of BR42KB105M thermistors make them suitable for use in such protective devices.

Conclusion

The BR42KB105M thermistor is an example of an NTC thermistor that exhibits a decrease in resistance as temperature rises. Its application fields range from temperature sensing, current-limiting, and surge suppression. Its usefulness in these areas lies in its fine resistance changing, which is significantly higher than other temperature-sensing elements. As such, BR42KB105M thermistors are commonly used in thermostats, temperature switches, current-limiting devices, and surge protective components.

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