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Through Hole Resistors

A through hole resistor (THR) is an electrical component that is used in electrical circuits that serves as an electrical resistance to limit the flow of current within a certain limit. Resistor is usually listed as a three-digit code, such as RNF12DTD681R, which is the THR code for the resistor. The code indicates the various properties of the resistor such as its power rating, working tolerance and maximum voltage.

RNF12DTD681R Application Field

The RNF12DTD681R is a resistor specifically designed for use in audio systems where precision and accuracy are required. It has a large power rating of 0.70 watts with a working tolerance of 0.2%, and can handle up to 350 volts of peak voltage. The RNF12DTD681R is also designed to provide peak currents up to 5Amperes. Additionally, with its very low thermal resistance, the RNF12DTD681R is an excellent choice for applications where heat generation must be minimized such as LED lighting systems.

RNF12DTD681R Working Principle

The RNF12DTD681R is a type of non-inductive resistor which works by passing the current through a metal film which contains carbon or metal oxide. This metal film acts as a resistor offering electrical resistance to the flow of current. As current passes through this resistance, it produces heat which is primarily dissipated through the use of its large heat transfer area. This is why the RNF12DTD681R is an especially good choice for applications requiring low thermal resistance.

The resistance of the RNF12DTD681R is controlled by varying the ratio between the carbon or metal oxide and the other conductive material in the film. The variations in the ratio cause different levels of electrical resistance. The optimum ratio between the two materials in the film in order to achieve specific values of resistance is maintained by the manufacturer according to the user’s specifications.

Summary

The RNF12DTD681R is an excellent choice for applications with audio systems, LED lighting systems, and any other applications where precision and accuracy is required. It features a high power rating, and can operate up to 350 volts of peak voltage and 5Amperes of peak current. The resistor also has an exceptionally low thermal resistance. The resistance of the RNF12DTD681R is controlled by varying the ratio between the carbon or metal oxide and the other conductive material in the film.

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