RLR20C4871FRRSL

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Through Hole Resistors

RLR20C4871FRRSL is a type of through hole resistor. It is a cylindrical resistor with two lead wires, a cylindrical metal body covered with an insulating layer of epoxy resin and a colored layer of paint that indicates the tolerance and resistance value codes. This type of resistor offers high electrical resistivity with high power ratings, hence making it suitable for high power applications. Additionally, the through hole resistor helps dissipate heat through the leads to prevent it from building up in the component.

Application Field

RLR20C4871FRRSL resistors are typically used wherever low current and high power applications are required, like signal conditioning, power supplies, and communication systems. Since the leads are designed to pass through a hole on a PCB board, they are also used to mount and fix the resistor on the board, increasing its stability. Moreover, its layering technology offers excellent vibration and mechanical shock resistances, highly suited for heavy-duty applications.

Working Principle

The working principle of the RLR20C4871FRRSL resistor is based on passing an electrical current through its resistive material and generating thermal/heat energy. As such, a resistor works by converting electrical energy into heat, which is dissipated through its outer surface. This element can be used to control current and voltage in a given circuit, managing the current’s amplitude and keeping the output values constant.

The resistive layer of a through hole resistor is usually manufactured from carbon, metal alloy or metal-film technology. The carbon layer is highly reliable and can be used for power ratings up to 1W. Carbon layer also dissipates heat quickly, and is resistant to vibration and mechanical shock. The metal films are generally more reliable than carbon, which is why they are used in high power applications. Additionally, metal films offer lower tolerance levels than carbon layers with tighter deadband specifications.

RLR20C4871FRRSL also has a dissipative element to prevent excessive heating, which is generally made from insulating material (epoxy resin). The dissipative element is important to prevent thermal effects, as it helps dissipate heat away from the resistor’s element, and prevents it from becoming too hot. It also has a temperature coefficient, which measures the rate at which the resistor’s resistance changes with temperature. Thus, the resistor’s maximum operating temperature is also used to calculate the rate at which the resistance changes over range of temperatures.

Conclusion

RLR20C4871FRRSL is a type of through hole resistor used for high current and high power applications, like signal conditioning, power supplies, and communication systems. The element is primarily used to control current and voltage in a given circuit, viz., managing the current’s amplitude and keeping the output values constant. Moreover, its outer shell helps dissipate heat away from the resistor’s element, thereby reducing the risk of thermal effects and keeping temperatures regulated. The resistor also consists of a dissipative element, which helps dissipate heat away from the resistor’s element and prevents it from becoming too hot.

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