B57621C474K62

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NTC thermistors are temperature-sensing devices that feature a negative temperature coefficient. The type B57621C474K62 is a ceramic-encased NTC thermistor, which is a two-terminal thermistor that includes a resistor. It is used as temperature sensing element in both automotive and industrial applications.

The B57621C474K62 NTC thermistor has a B (beta) value of 5761 K, a tolerance of 10%, a resistance of 470K Ohm at 25 degrees Celsius and a dissipation factor of 4 mW. It also has a Maximum operating temperature of 125 degrees Celsius and a Curie temperature of 350 degrees Celsius.

NTC thermistors are extensively used in a variety of applications. Industrial applications where temperature sensing is required include heat detection in motor overloads, air conditioning, HVAC systems, motors, and pumps. Automotive and other vehicular applications also make use of NTC thermistors for temperature sensing in cooling systems, brakes, headlamps, airbags, and engine control.

NTC thermistors have a unique working principle that involves the use of a semiconductor material whose resistance decreases with an increase in temperature. The semiconductor component used is usually a ceramic material which is then doped with a small amount of metal oxide. The resulting semiconductor material has an unpredictable degree of non-linear temperature- resistance characteristics. That is, an increase in temperature by a given amount will result in a predictable decrease in resistance, whereby the resistance drop becomes greater as the temperature rise increases.

The NTC thermistor works on the principle of increasing resistance with an increase in temperature. This is because of the semiconductor material that is used. As the temperature rises, more energy is needed to move electrons at a greater pace, thus increasing the resistance. When the temperature drops, less energy is needed and consequently the resistance is decreased.

In the B57621C474K62 thermistor package, the NTC semiconductor is housed in a ceramic-based sheath which is then encapsulated in epoxy. The sheath ensures reliable functioning of the thermistor since it serves as an insulating barrier that prevents contamination from the environment. The epoxy also helps to protect the sensitive components of the thermistor from wear and damage.

The B57621C474K62 has a variety of applications due to its features and performance. It is used for temperature sensing and controlling in a wide range of automotive, industrial, and commercial applications. It can also be used as a temperature limiting device in many applications. Additionally, it is suitable for temperature sensing and monitoring in various medical devices, as well as for safety monitoring in numerous safety applications.

The B57621C474K62 thermistor is an essential component of temperature sensing and control systems. Its working principle of increasing the resistance with an increase in temperature makes it suitable for numerous applications, such as those previously mentioned. Moreover, its ceramic-encased design makes it reliable, rugged, and suitable for a wide range of operating environments.

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