H4191KFDA

Series:	Holco, Holsworthy
Packaging:	Bulk
Part Status:	Active
Resistance:	191 kOhms
Tolerance:	±1%
Power (Watts):	0.5W, 1/2W
Composition:	Metal Film
Features:	Pulse Withstanding
Temperature Coefficient:	±25ppm/°C
Operating Temperature:	-55°C ~ 155°C
Package / Case:	Axial
Supplier Device Package:	Axial
Size / Dimension:	0.146" Dia x 0.394" L (3.70mm x 10.00mm)
Height - Seated (Max):	--
Number of Terminations:	2
Failure Rate:	--

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Through Hole Resistors

Widely used in many engineering fields, through hole resistors are electronic components used to create or maintain a specific electrical current flow in a circuit. With the increasing demand for more comprehensive control and precision in engineering design, through hole resistors have become commonplace components. One of the more popularly used through hole resistors is the H4191KFDA. This article explores the application field and working principle of the H4191KFDA to gain a better understanding of this type of resistor.

Applications of H4191KFDA

The H4191KFDA is a high performance ceramic resistor with very high accuracy and high precision that is ideal for use in signal circuits. It is made of high-quality ceramic and is characterized by great durability, exceeding microclimate endurance and resistance to sudden changes in temperature. Its low-noise and high-precision characteristics make it ideal for use in audio and video circuits, particularly in the audio industry where it is used for accurate sound reproduction.It is also widely used in industrial digital power sources such as DC-to-DC converters, AC-to-DC converters, motor drives, and auxiliary motor drives. Its high precision, stability, and wide performance range make it ideal for controlling current flow and circuit voltages within industrial power sources. It is also used in scenarios where tight control of current is paramount such as in LED lighting systems.

Working Principle of H4191KFDA

The H4191KFDA works by restricting or influencing current flow in a circuit, storing energy, and affecting voltage levels. It consists of five main parts; the body, the ceramic disc, the resistive-bridge, the contact pins, and the top-end cap. The body is made from ceramic and is composed of a top and bottom side. On its top side there are two sets of two contact pins, each in line with the other.The ceramic disc is located between the two sets of contact pins and provides the resistive element. It is made from a combination of metal oxides that have been fused together to create a highly resistant material. This material acts as an insulator to the contact pins, allowing current to only flow in a certain direction.The resistive-bridge is located beneath the ceramic disc and is composed of a four-way bridge of resistors. The resistive-bridge is the element that allows the resistor to control current flow in circuits. It acts as a voltage stabilizer, allowing the voltage across the resistor to remain constant while the current flow increases or decreases.The contact pins are directly connected to the resistive-bridge and are responsible for conducting the current through the resistor. The top-end cap completes the resistor by preventing dust and other contaminants from coming into contact with the resistor.

Conclusion

Through hole resistors are key components in engineering applications, with the H4191KFDA being one of the more popularly used components. It is made from a ceramic material, allowing it to withstand extreme temperature changes, as well as providing it with more stable resistance. Its components work together to control current flow and support the stability of voltage levels produced in circuitry. As such, it is widely used in various engineering and industrial contexts where precision, accuracy, and stability are paramount.

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