CRCW040247K0FKED
Compact thick film resistors for surface mount applications
Manufacturer： ['dale', 'vishay', 'vishay-draloric']
series introduction
# Introduction to the CRCW040247K0FKED Product Series
## 1. Overview
The CRCW040247K0FKED 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, voltage division, and signal attenuation. The "CRCW" is often a product family identifier, "0402" refers to the standard package size, "47K0" indicates the resistance value, and "FKED" may represent specific tolerance, temperature coefficient, or other manufacturing - related characteristics.
## 2. Package Size (0402)
### Physical Dimensions
The 0402 package is a widely used small - sized surface - mount package. It has a length of approximately 1.00 mm and a width of about 0.50 mm. This compact size makes it ideal for applications where space is at a premium, such as in mobile devices, wearable electronics, and miniaturized circuit boards.
### Advantages of the Package
- **Space - Saving**: Allows for high - density circuit design, enabling the integration of more components on a single printed circuit board (PCB).
- **Lightweight**: Contributes to the overall reduction in the weight of the electronic device, which is especially important for portable applications.
## 3. Resistance Value (47K0)
### Meaning of the Value
The resistance value of 47K0 means 47,000 ohms. In an electronic circuit, this resistor will oppose the flow of electric current according to Ohm's law (V = IR, where V is voltage, I is current, and R is resistance). For example, if a voltage of 47 volts is applied across this resistor, a current of 1 milliampere (I = V/R = 47V / 47000Ω = 0.001A) will flow through it.
### Applications Based on Resistance
- **Voltage Division**: In a voltage - divider circuit, the 47K0 resistor can be used in combination with other resistors to create a specific output voltage. For instance, when paired with a 47K0 resistor in series, the input voltage will be divided equally between the two resistors.
- **Biasing Circuits**: It can be used to set the proper operating point for transistors or other active components in a circuit.
## 4. Tolerance and Temperature Coefficient
### Tolerance
The tolerance of the CRCW040247K0FKED resistor indicates the allowable deviation from the nominal resistance value of 47K0. A tight tolerance is important in applications where precise resistance values are required, such as in precision measurement circuits or high - performance audio amplifiers. For example, if the tolerance is ±1%, the actual resistance value of the resistor can range from 46,530 ohms (47000 - 470) to 47,470 ohms (47000 + 470).
### Temperature Coefficient
The temperature coefficient reflects how the resistance value of the resistor changes with temperature. A low temperature coefficient is desirable in applications where the circuit needs to operate stably over a wide temperature range. For example, in automotive electronics or industrial control systems, where the temperature can vary significantly, a resistor with a low temperature coefficient will ensure that the circuit performance remains consistent.
## 5. Electrical Performance
### Power Rating
The power rating of the CRCW040247K0FKED resistor determines the maximum amount of power it can dissipate without being damaged. It is calculated using the formula P = I²R
Images for reference
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541-0402 (1005)
CRCW-0402
SMD Thick Film Side