RNR55H1821FMB14

Through Hole Resistors

RNR55H1821FMB14 is a type of through hole resistor.

A through-hole resistor, or leaded resistor, is a type of resistor which has two or more terminals, through which it is attached to a board with leads forming a mount. The leads are typically made of copper or another metal, and they are plated or soldered to either side of the resistor body. Through-hole resistors are typically used in high-power applications as they are better able to dissipate heat compared to surface-mount resistors.

Application Fields

RNR55H1821FMB14 through hole resistors are frequently used in electronic devices, including power supplies, digital signal processing (DSP) boards, analog-to-digital converters (ADCs), amplifiers, and signal conditioners. As they are able to tolerate a wide range of input and environmental conditions, they are also a great choice for automotive, aerospace, medical, military, and industrial applications.

Working Principle

The working principle of RNR55H1821FMB14 through hole resistors is based on the Ohm\'s law. Ohm\'s law states that the current in a circuit is equal to the voltage divided by the resistance. The value of a through-hole resistor is determined by the number of turns in the resistor, as well as the diameter of the copper wire used in the winding. This value is usually marked on the resistor body.

At low-voltage applications, the resistance of a through-hole resistor decreases with increasing temperature. However, as the voltage increases, the resistance increases with increasing temperature. This is known as the temperature coefficient of resistance (TCR).

In addition, through-hole resistors have low tolerance when compared to surface-mount resistors. This is because through-hole resistors are produced by winding a thin copper wire around an insulating tube, whereas surface-mount resistors are produced by depositing a layer of metal paste on the surface of a board.