CRCW08057K50FKEA
Thick film SMD resistors, 7.5K Ohm, 1% tolerance, 0805 size
Manufacturer： ['dale', 'vishay', 'vishay-draloric']
series introduction
# Introduction to the CRCW08057K50FKEA Product Series
## 1. Overview
The CRCW08057K50FKEA belongs to a specific series of surface - mount resistors. These resistors are crucial components in modern electronic circuits, playing a fundamental role in controlling current flow, dividing voltages, and setting signal levels. The "CRCW" is often the product family code, "0805" refers to the package size, "7K50" indicates the resistance value, and "FKEA" might be a specific variant or part of the manufacturer - specific coding for additional features or quality levels.
## 2. Package Size (0805)
### Physical Dimensions
The 0805 package is a widely used standard in the electronics industry. It has a length of approximately 2.03 mm and a width of about 1.27 mm. 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.
### Mounting
It is designed for surface - mount technology (SMT). SMT allows for automated assembly processes, which are faster and more cost - effective compared to through - hole mounting. The resistor can be easily placed on a printed circuit board (PCB) using pick - and - place machines, and then soldered in place using reflow soldering techniques.
## 3. Resistance Value (7K50)
### Numerical Meaning
The "7K50" notation represents a resistance value of 7.50 kΩ (kilo - ohms). Resistance is a measure of how much a component opposes the flow of electric current. In a circuit, a 7.50 kΩ resistor can be used in various applications, such as in voltage divider circuits to create a specific output voltage based on the input voltage and the values of other resistors in the circuit.
### Tolerance
The resistor typically has a specified tolerance. For the "F" in the part number, it usually indicates a tolerance of ±1%. This means that the actual resistance value of the CRCW08057K50FKEA resistor can vary by up to 1% from the nominal value of 7.50 kΩ. For example, the actual resistance could range from 7.425 kΩ (7.50 kΩ - 1% of 7.50 kΩ) to 7.575 kΩ (7.50 kΩ+ 1% of 7.50 kΩ). A tight tolerance is important in applications where precise resistance values are required, such as in precision measurement circuits or in circuits where the performance is highly dependent on accurate voltage or current levels.
## 4. Electrical Characteristics
### Power Rating
The CRCW08057K50FKEA has a specific power rating. For an 0805 - sized resistor, the typical power rating is around 1/8 watt (0.125 W). This power rating indicates the maximum amount of power that the resistor can safely dissipate without overheating. When using the resistor in a circuit, the power dissipated in the resistor (calculated using the formula \(P = I^{2}R\) or \(P=\frac{V^{2}}{R}\), where \(P\) is power, \(I\) is current, \(V\) is voltage, and \(R\) is resistance) must be less than the power rating to ensure reliable operation.
### Temperature Coefficient
The temperature coefficient of resistance (TCR) is another important electrical characteristic. It describes how the resistance value of the resistor changes with temperature. A low TCR is desirable
Images for reference
CRCW-0805
SMD Thick Film Side
SMD Thick Film Top