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Through Hole Resistor: RN55E3742BRE6

Through hole resistors, also known as axial resistors, are one of the most common types of resistor used today. Their name comes from the fact that they can be mounted in a circuit board by passing a wire or PCB component through a hole in the board. This hole is then soldered to the resistor lead, creating an electrical connection between the component and the board.

The RN55E3742BRE6 is a through-hole resistor from the RN55 Series. It has an ohmic value of 37kΩ and a tolerance of ±2%. The power rating of the resistor is 2 watts and its maximum operating temperature is 85°C.

Application Field

The RN55E3742BRE6 is primarily used in industrial applications, such as motor control systems and in-car entertainment systems. It is typically used in high-efficiency applications with high temperatures, as its 2W power rating and 85°C operating temperature can handle the heat. Additionally, its ±2% accuracy is suitable for applications where precision is important.

The RN55E3742BRE6 can also be used in applications where noise is an issue. Its non-inductive construction reduces stray ground noise and also prevents crosstalk between adjacent components. This makes it ideal for use in circuit designs where noise may be an issue.

Working Principle

The RN55E3742BRE6 is a epoxy-coated axial resistor, which means that it has two leads that extend from a ceramic core. The core is coated in an epoxy-based resin, which is used to insulate the resistor and improve its thermal properties. This epoxy coating also allows the resistor to fit through small holes in a PCB and keep the leads in place. The resistor also has a color code printed on it, which indicates the value of the resistor as well as its tolerance.

The RN55E3742BRE6 is a variable resistor, which means that its resistance can be adjusted during operation. This is accomplished by turning a knob on the resistor, which is connected to the ceramic core. This adjustment allows the resistor to provide adjustable resistance to a circuit, which is useful in applications where an exact amount of resistance is needed.

The RN55E3742BRE6 is usually connected in series with other resistors in a circuit board. This means that the current flowing through the resistor is dependant on the on resistance of the resistor and the resistance of the other resistors in the circuit. This can be used to balance the load in a circuit, or to create certain resistances such as in a voltage divider circuit.

Conclusion

The RN55E3742BRE6 is a versatile through-hole resistor, which can be used in a variety of applications. Its 2W power rating and 85°C temperature rating mean that it can be used in high efficiency applications, while its non-inductive construction makes it ideal for use in noise-sensitive circuits. Additionally, its ±2% accuracy makes it suitable for precision applications. The RN55E3742BRE6 is an ideal choice for through-hole applications.

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