CRCW120633R0FKEA
Thick film SMD resistors, 33 Ohm, 1% tolerance, 1206 size
Manufacturer： ['dale', 'vishay', 'vishay-draloric']
series introduction
# Introduction to the CRCW120633R0FKEA Product Series
## 1. Overview
The CRCW120633R0FKEA belongs to a specific series of surface - mount resistors. These resistors are crucial components in electronic circuits, playing a fundamental role in controlling current flow, dividing voltages, and terminating signals. The "CRCW" is often a product family identifier, "1206" refers to the package size, "33R0" indicates the resistance value, and "FKEA" might be related to specific manufacturing or performance - related codes.
## 2. Package Size (1206)
### Physical Dimensions
The 1206 package is a widely used standard in the electronics industry. It has a length of approximately 3.2 mm and a width of about 1.6 mm. This relatively large size compared to some other surface - mount packages offers several advantages.
### Handling and Assembly
It is easier to handle during the manufacturing process, both for manual and automated assembly. Automated pick - and - place machines can accurately position 1206 resistors on printed circuit boards (PCBs). The larger size also provides better mechanical stability on the PCB, reducing the risk of dislodging during handling or due to vibrations.
## 3. Resistance Value (33R0)
### Meaning
The "33R0" notation represents a resistance value of 33 ohms. In the resistor naming convention, the "R" is used to denote the decimal point. This specific resistance value is commonly used in a variety of electronic circuits.
### Applications
- **Current Limiting**: In LED circuits, a 33 - ohm resistor can be used to limit the current flowing through the LED, preventing it from burning out due to excessive current.
- **Voltage Division**: In voltage - divider circuits, it can be combined with other resistors to create a specific output voltage based on the input voltage and the ratio of the resistances.
## 4. Tolerance and Temperature Coefficient
### Tolerance
The resistor in the CRCW120633R0FKEA series typically has a tight tolerance. The "F" in the part number often indicates a tolerance of ±1%. This means that the actual resistance value of the resistor will be within 1% of the stated 33 - ohm value. A low - tolerance resistor is essential 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 current or voltage levels.
### Temperature Coefficient
These resistors usually have a specified temperature coefficient. A low temperature coefficient ensures that the resistance value remains relatively stable over a wide range of operating temperatures. This is important in applications where the circuit may be exposed to varying environmental conditions, such as in automotive electronics or industrial control systems.
## 5. Power Rating
The power rating of the CRCW120633R0FKEA resistors is an important parameter. It indicates the maximum amount of power that the resistor can safely dissipate without overheating. For a 1206 - sized resistor, the typical power rating is around 0.25 watts. This power rating determines the maximum current that can flow through the resistor based on the power formula \(P = I^{2}R\) (where \(P\) is power, \(I\) is current, and \(R\) is resistance). In applications where high - power dissipation is required, multiple resistors may need to be used in parallel or series to handle the power.
## 6. Construction and Materials
### Construction
These resistors are typically constructed using a thin - film or thick - film technology. Thin - film
Images for reference
CRCW-1206
SMD Thick Film Side
SMD Thick Film Top