LR0204F91R

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Through Hole Resistors

Through hole resistors are components that are used to reduce the electrical current flow in electronic circuits. LR0204F91R is one of the most commonly used through hole resistors for various applications. This article will explain the application fields and working principle of LR0204F91R.

Application fields

LR0204F91R is mainly used for DC/AC current which requires a good voltage stability. Due to its good thermal characteristics, it can be used in a wide range of temperature conditions. It is suitable for applications in the automotive, home appliances, and industrial sectors. This resistor also can be applied for power supply lines and secondary lines of signal circuits.

Because of its wide temperature range of -65℃～200℃, low cost, and low temperature coefficient of resistance (TCR) of ±100ppm/℃, LR0204F91R is an ideal choice for thermal isolation of parallel circuits, current sensing, and voltage stabilization. It can also be used in protection circuits to reduce over voltage and over current, as well as to reduce EMI noise.

Working Principle

The LR0204F91R is a type of through hole resistor with a solid carbon core. This resistor works by constraining the flow of current in a circuit. As the current flows through the resistor, there is an opposition to the current which causes the generated energy to be dissipated as heat. The amount of resistance is determined by the size and shape of the resistor and the amount of material it is made of. This heat is then sent to the surroundings, thus reducing the amount of current.

In addition, this resistor also has a voltage coefficient which works by creating an EMF opposition in the resistor. The magnitude of this opposition is determined by the temperature coefficient of resistance (TCR) of ±100ppm/℃, and the amount of current passing through the resistor. The higher the TCR, the greater the EMF opposition. This results in greater voltage stabilization when the resistor is subject to temperature changes.

Finally, the LR0204F91R is designed with a self-heating technology which is activated when a rise in the operating temperature is needed. This is activated by the current passing through the resistor, and results in a greater current flow. Thus, this technology is used for temperature compensation and efficient source management.

Conclusion

LR0204F91R is a type of through hole resistor designed to reduce the flow of current to regulate the voltage. It is mainly used in DC/AC current, and is suitable for applications in the automotive, home appliances, and industrial sectors. It is also an ideal choice for thermal isolation of parallel circuits, current sensing, and voltage stabilization due to its good thermal characteristics, wide temperature range of -65℃～200℃, low cost, and low temperature coefficient of resistance (TCR) of ±100ppm/℃. This resistor also employs self-heating technology which is activated when a rise in the operating temperature is needed.

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