RC0805FR-0747R
Thick film SMD resistors, 47-47.5 Ohm, 1% tolerance, 0.125W power
Manufacturer： yageo
series introduction
# Introduction to the RC0805FR - 0747R Product Series
## 1. Overview
The RC0805FR - 0747R is a part of a high - performance resistor product series that caters to a wide range of electronic applications. These resistors are designed with precision and reliability in mind, offering consistent electrical performance in various operating conditions.
### Package Size
The "0805" in the part number refers to the industry - standard surface - mount package size. In the metric system, an 0805 package measures approximately 2.0mm x 1.25mm. This relatively small size makes it suitable for use in compact electronic devices where space is at a premium, such as mobile phones, tablets, and wearable devices. The small footprint allows for high - density circuit board designs, enabling manufacturers to pack more functionality into a smaller area.
## 2. Electrical Specifications
### Resistance Value
The "47R" indicates a resistance value of 47 ohms. This specific resistance value is commonly used in a variety of electronic circuits for tasks such as current limiting, voltage division, and signal attenuation. For example, in a simple LED circuit, a 47 - ohm resistor can be used to limit the current flowing through the LED, preventing it from burning out due to excessive current.
### Tolerance
The "FR" in the part number typically implies a tight tolerance. In most cases, resistors in this series have a tolerance of ±1%. This means that the actual resistance value of the resistor will be within 1% of the stated 47 - ohm value. A low tolerance is crucial in applications where precise resistance values are required for accurate circuit operation, such as in precision measurement equipment and audio amplifiers.
### Power Rating
The power rating of the RC0805FR - 0747R resistors is an important specification. These resistors are designed to handle a certain amount of power without overheating or being damaged. For the 0805 package, the typical power rating is around 1/8 watt (0.125W). This power rating determines the maximum amount of power that the resistor can dissipate safely. In applications where the power dissipation exceeds the rated value, the resistor may overheat, leading to a change in its resistance value or even failure.
## 3. Construction and Materials
### Resistive Element
The resistive element of the RC0805FR - 0747R is typically made of a thin - film material. Thin - film resistors offer several advantages over other types of resistors, such as carbon - composition or thick - film resistors. They have better temperature stability, lower noise, and higher precision. The thin - film technology allows for the precise control of the resistance value during the manufacturing process, resulting in resistors with tight tolerances.
### Terminations
The terminations of the resistor are made of a metal alloy that provides good electrical conductivity and mechanical stability. These terminations are designed to be soldered onto the printed circuit board (PCB) easily. The high - quality terminations ensure a reliable electrical connection between the resistor and the PCB, reducing the risk of intermittent connections or signal loss.
## 4. Temperature Coefficient
The temperature coefficient of resistance (TCR) is an important characteristic of the RC0805FR - 0747R series. TCR indicates how much the resistance value of the resistor changes with temperature. Resistors in this series typically have a low TCR, usually in the range of ±100 ppm/°C or lower. A low TCR means that the resistance value remains relatively stable over a wide temperature range. This is essential in applications where the operating temperature can vary significantly, such as automotive electronics
Images for reference
0805 Chip Resistor, SMT
Thick Film Resistor Side
Thick Film Resistor Top