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Through Hole Resistors

Through hole resistors are components that function by using two conductive materials, the resistor and the substrate, to form an electrical resistor. The resistor is a tightly wound wire or composed of a wire and other metallic materials, while the substrate is a sheet of insulating material. A through-hole resistor is designed to provide a specific resistance value in an electrical circuit of a specific type. It is the resistance that makes this type of resistor such a valuable component in electronics and electrical engineering.

The RN55C4991FB14 through hole resistor is an ultra precision metal film resistor rated 5% tolerance. It has pinholes in the middle for mounting to printed circuit boards. These resistors feature very high power dissipation of 3W and an operating temperature of -55 degree C to +150 degree C. They are mainly used in circuit boards, and are useful in applications such as high precision input and output circuits, solenoid control, converters, and in power circuits.

The Working Principle of the RN55C4991FB14

TheRN55C4991FB14through hole resistor is constructed by a sheet of metal film composed of two layers of alternate materials. The top layer is composed of a metal film attached to the substrate, while the bottom layer is a concentric maze of winding resistive material. This combination creates a single resistor, which is what allows the resistor to become specifically tailored resistor for a certain type of application.

The working principle of the RN55C4991FB14 involves its property to resist the flow of current. When an electrical voltage is applied to the resistor, an electric current is generated. This current is proportional to the voltage applied and inversely proportional to the value of the resistor. This means that the higher the resistance, the lower the current for a given voltage.

The RN55-C4991FB14 also utilizes temperature coefficient (TCR) technology. TCR is a way to control the temperature of a resistor\'s value, as the resistance value is affected by temperature. The temperature coefficient of the RN55-C4991FB14 is ±25ppm/°C, meaning that the value of the resistor may be increased or decreased by ±25ppm/°C depending on the temperature. This enables its use in applications where precision is needed in order to maintain a precise electric current.

Applications of the RN55C4991FB14

The RN55C4991FB14 through hole resistor is primarily used in medium current digital systems, measuring instruments, audio-visual and instrumentation applications. Some of its common applications include:

• Measuring instruments for voltage and current regulation
• AC and DC motor control and power regulation
• Precision power supplies and converters
• High-end audio and video applications
• Test and measurement equipment

The RN55C4991FB14 is also highly suitable for use in applications where high current and low TC are required, such as GPS receivers, Bluetooth transmitters and receivers, medical equipment, and RF communication. It is also used in PC boards and automotive applications, due to its very high power dissipation and temperature coefficient features.

Due to its high precision and accuracy features, the RN55C4991FB14 through hole resistor can be used in a wide variety of applications. Its high power dissipation and temperature coefficient makes it perfect for use in high current and low TC applications, and its high cross-checking capability makes it ideal for applications where precision is essential.

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