RNR55K4990FSRSL

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Through Hole Resistors are commonly used in almost all electronic and electrical designs, no matter if they are for industrial applications or for consumer products. The RNR55K4990FSRSL is a special type of through hole resistor which is used in many applications. Its low temperature coefficient gives it a unique capability to be used in high reliability applications when high accuracy is required. We will discuss its application fields and working principle in the following paragraphs.

The RNR55K4990FSRSL is mainly used in precision electronic applications, such as when precise current and voltage measurements are needed. This kind of precision can be obtained through its low temperature coefficient, which helps to maintain its high accuracy over a wide range of temperatures. The RNR55K4990FSRSL is also frequently used in power supply designs, as its high power rating can be used to deliver steady and reliable levels of current and voltage. Additionally, its robust voltage breakdown and endurance ratings make it a favorite amongst industrial applications.

The RNR55K4990FSRSL is a carbon element-based through hole resistor that uses a metal-oxide junction for its electrical characteristics. When electrical current is applied to the resistor, a thin film of resistive material on the metal-oxide junction is heated up. This heat causes a flow of electrons between the resistor’s two electrodes, eliminating any electric resistance. The voltage drop in the resistor is proportional to the electrical current applied, and an inverse proportionality exist with the electrical power dissipated in the resistor.

In terms of its construction, the RNR55K4990FSRSL has a resistor body that is made of an alloy of nickel with other metals for better electrical and mechanical characteristics. The resistor is coated with silver-nickel clad for better protection from the environment. The element is inserted in a hole at one end and then sealed with an epoxy-resin at the other end. The resistor is then cut off from its body by laser. The resistor can also be hermetically sealed.

The RNR55K4990FSRSL is an ideal low-temperature coefficient through hole resistor that is trusted by engineers and designers when dependable and accurate performance is needed in power supply and precision projects. This construction of a carbon element-based resistor gives enhanced dissipation of heat, high-current triggering capabilities, advanced overload protection, and ultra-long life expectancy compared to other through hole resistors. Thus, the RNR55K4990FSRSL is the ideal choice for many applications.

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