DKA202B5

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NTC thermistors are temperature sensors that use the principle of thermistor effect. The NTC thermistor is made of a semiconductor material, which has a positive temperature coefficient of resistance that changes with temperature over the specified temperature range. The DKA202B5 is a surface mounted NTC thermistor, designed to measure temperatures from -40 to 125°C (-40 to 257°F). Typically, the DKA202B5 is used for temperature sensing and controlling in various applications, such as HVAC, temperature control systems, automotive cooling systems, domestic appliances, and consumer electronics.

The DKA202B5 thermistor consists of two leads and a chip sealed in a TO92 package. The two leads are connected to a gap near the tip of the chip, and the resistance between them changes with temperature. The chip itself is a thermally sensitive resistor made of metal oxide, which, when heated, changes its electrical characteristics. When the leads of the thermistor are connected to a voltage source, the thermistor produces a temperature independent voltage that represents the temperature of the environment. This voltage signal is then interpreted by the connected measurement and control electronics.

The response time of the DKA202B5 temperature sensor is dependent upon the specific application. Generally, the response time is between 0.4 and 1.2 seconds. The temperature change can be adjusted by using the internal temperature drive circuitry to adjust the response time of the thermistor. The thermistor also has a factor of power dissipation that is determined by the load associated with the thermistor. The dissipation factor determines the temperature coefficient of resistivity, which affects the stability and accuracy of the measurement.

In addition to the response time, the accuracy of the DKA202B5 is determined by several other factors. These include the environment in which the thermistor is used, the load applied to it, and the temperature range that it is designed to measure. Although the tolerances of the thermistor vary, the DKA202B5 is typically accurate within a few degrees Celsius over the specified temperature range. Furthermore, the sensitivity of the thermistor is determined by its resistance at a given temperature and its corresponding temperature coefficient.

The DKA202B5 NTC thermistor is a reliable and accurate temperature sensor suitable for a wide range of applications. Its response time, accuracy, and robustness make it a suitable choice for temperature control in HVAC systems, automotive cooling systems, domestic appliances, and consumer electronics. Given its robust design and versatile application range, it is a versatile and reliable choice for temperature sensing and control.

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