CRCW0402220RJNED
Thick film resistors, 220 Ohm, 5% tolerance, SMD 0402 size
Manufacturer： ['vishay', 'dale']
series introduction
# Introduction to the CRCW0402220RJNED Product Series
## 1. Overview
The CRCW0402220RJNED 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 terminating signals. The "CRCW" is the product family code, "0402" indicates the package size, "220R" represents the resistance value, and "JNED" contains additional information about the resistor's tolerance, temperature coefficient, and other characteristics.
## 2. Package Size (0402)
### Physical Dimensions
The 0402 package is a very common and compact surface - mount package. It has a length of approximately 1.00 mm (0.039 inches) and a width of about 0.50 mm (0.020 inches). This small size makes it ideal for use in densely populated printed circuit boards (PCBs), such as those found in mobile devices, wearables, and other miniaturized electronics.
### Advantages of the Package
- **Space - Saving**: Allows for high - density component placement, enabling the design of smaller and more portable electronic products.
- **Low Parasitic Effects**: The small physical size results in lower parasitic capacitance and inductance, which is beneficial for high - frequency applications as it helps to maintain signal integrity.
## 3. Resistance Value (220R)
### Meaning
The "220R" notation indicates a resistance value of 220 ohms. Resistance is a measure of how much a component opposes the flow of electric current. In a circuit, a 220 - ohm resistor can be used in various applications, such as:
- **Current Limiting**: For example, in an LED circuit, a 220 - ohm resistor can be used to limit the current flowing through the LED to prevent it from burning out.
- **Voltage Division**: In a voltage - divider circuit, it can be combined with other resistors to create a specific output voltage based on the input voltage.
## 4. Tolerance
The tolerance of a resistor indicates the allowable deviation from its nominal resistance value. For the CRCW0402220RJNED, the tolerance information is encoded in the "JNED" part of the product code. A common tolerance for this type of resistor might be ±1%. This means that the actual resistance value of the resistor can vary between 217.8 ohms (220 - 220×0.01) and 222.2 ohms (220+ 220×0.01).
### Importance of Tolerance
- **Precision Circuits**: In applications where precise resistance values are required, such as in analog circuits for signal processing or in precision measurement equipment, a low - tolerance resistor like this is essential to ensure accurate performance.
## 5. Temperature Coefficient
The temperature coefficient of resistance (TCR) is another important characteristic. It describes how the resistance of the resistor changes with temperature. The TCR information is also part of the "JNED" code. A typical TCR for this series might be in the range of ±100 ppm/°C.
### Impact on Performance
- **Stability**: In environments where the temperature can vary significantly, a low TCR ensures that the resistance value remains relatively stable. This is crucial for maintaining the performance of circuits, especially in applications like automotive electronics, where the temperature can range from - 40°C to 125°C.
## 6. Power Rating
The power rating of the CRCW0
Images for reference
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541-0402 (1005)
CRCW-0402
Thick-Film 5% Top