DKA202N3

Series:	DKA202
Packaging:	Bulk
Part Status:	Active
Resistance in Ohms @ 25°C:	2k
Resistance Tolerance:	±3%
B Value Tolerance:	±1%
B0/50:	--
B25/50:	--
B25/75:	--
B25/85:	3540K
B25/100:	--
Operating Temperature:	-40°C ~ 250°C
Length - Lead Wire:	1.06" (27.00mm)
Mounting Type:	Through Hole
Package / Case:	DO-204AH, DO-35, Axial

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Temperature Sensors - NTC Thermistors

Temperature sensing is an important task in many industrial and domestic applications, such as providing accurate background measurements and protection from abnormally high temperatures. Resistive temperature sensors have become popular for providing an economical method to measure temperature changes. One type of resistive temperature sensor is the NTC (Negative Temperature Coefficient) thermistor. The DKA202N3 is one example of such a device. The DKA202N3 is a surface mount NTC thermistor that provides accurate temperature measurements over a wide temperature range from -60°C to +150°C. These devices are packaged in a small 0.6mm lead pitch, providing an optimal balance of size, cost and performance. The DKA202N3 is designed to measure temperature in air, gas, or liquid media. It is often used in industrial automation, air conditioning, power electronics, and automotive applications. The device provides reliable performance and quick response to temperature changes, making it well suited for rapid heating and cooling. The working principle of an NTC thermistor is based on the fact that the resistance of a semiconductor material changes with temperature. An NTC thermistor is a semiconductor resistor made of material such as metal oxides, which have a negative temperature coefficient. That is, the resistance decreases as the temperature increases. Therefore, when the temperature of the thermistor is increased the resistance decreases and vice versa. When the temperature around the NTC thermistor increases, a small voltage is created across its terminals. This voltage is measured by a measuring device such as a microcontroller, a PLC (Programmable Logic Controller), or an interface circuit. The resistance of the NTC can then be calculated by the applied voltage and the current flowing through the thermistor. The DKA202N3 is designed with two series pins connected to two terminals. The series pins are used to adjust the NTC thermistor\'s resistance versus temperature (R-T) curve over the range of operation. The R-T curve is specified for each device, and the user then adjusts the series pins to match the required curve. The thermistor\'s operating temperature range can be adjusted by varying the bias current, which is accomplished by adding an additional resistor to the series pins of the device. The DKA202N3 thermistor also includes internal protection against reverse polarity and overcurrent. The device is constructed using high-temperature ceramic to reduce thermal gradients and ensure accurate temperature measurement. In addition, it can withstand forces up to 1.1KG and has a maximum power rating of 0.25W. The DKA202N3 is an economical and reliable solution for temperature sensing in air, gas, or liquid media. The device is designed to provide accurate measurements and is suitable for a variety of applications in industrial automation, air conditioning, power electronics, and automotive applications. It has a wide operating temperature range, and its internal protection mechanisms provide robustness and protection from reverse polarity and overcurrent.

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