H81K87DCA

Series:	Holco, Holsworthy
Packaging:	Bulk
Part Status:	Active
Resistance:	1.87 kOhms
Tolerance:	±0.5%
Power (Watts):	0.25W, 1/4W
Composition:	Metal Film
Features:	Pulse Withstanding
Temperature Coefficient:	±50ppm/°C
Operating Temperature:	-55°C ~ 155°C
Package / Case:	Axial
Supplier Device Package:	Axial
Size / Dimension:	0.098" Dia x 0.283" L (2.50mm x 7.20mm)
Height - Seated (Max):	--
Number of Terminations:	2
Failure Rate:	--

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Through Hole Resistors

Through hole resistors, also known as THRs, are used mainly in professional electronic applications. The resistors themselves are usually made of a ceramic material such as metal oxide, and can come in different sizes and shapes. THRs can provide a wide range of resistance levels depending on the method of construction and the material used. One of the most commonly used resistors in this category is the H81K87DCA.

H81K87DCA Description

The H81K87DCA is a through-hole resistor which is used for high current applications. It is series-resistor comprising of one or two individual resistor elements. It has a very low thermal coefficient of expansion and resistance to vibrations which makes it suitable for high temperature and high vibration environments. The device is also relatively small and can be easily mounted on a circuit board.

H81K87DCA Application Field

The H81K87DCA is widely used in professional electronic applications where its resistance values are needed to be accurately controlled. It can be found in many different operational and measuring circuits where high current is required. Some of its common applications include power supplies, voltage regulators, motor control systems, and switching circuits.

H81K87DCA Working Principle

The H81K87DCA works by providing a fixed resistance value across two terminals with the passage of current through the resistor element. The flow of current is regulated by the resistance which is controlled by adjusting the material of the resistor element. The resistance of the device can be accurately controlled by adjusting the material, such as metal oxide, which is used to form the resistor element.

H81K87DCA Advantages

The H81K87DCA is a useful device for many applications due to its high resistance levels and reliability in high temperature and vibration environments. The device is also easy to install on a circuit board and comes in a small size. It can provide a wide range of resistance values depending on the material used.

H81K87DCA Limitations

Though the H81K87DCA is suitable for many applications, it has a few limitations. Firstly, it cannot operate at high frequencies which can be a problem if frequency accuracy is important to the application. Furthermore, the device is relatively expensive and requires a fairly large circuit board space due to its sizes.

Conclusion

The H81K87DCA is a through-hole resistor which is suitable for many electronic applications where accuracy and reliability of resistance values is important. Its thermal coefficient of expansion and resistance to vibrations make it ideal for high temperature and vibration environments. Additionally, it is easy to install and provides a wide range of resistance values. However, there are a few limitations such as frequencies and cost to be aware of.

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