ERJ-2RKF1001X vs ERJ-3EKF4701V
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| Category | Chip Resistor - Surface Mount | Chip Resistor - Surface Mount |
| Manufacturer | Panasonic Electronic Components | Panasonic Electronic Components |
| Description | RES SMD 1K OHM 1% 1/10W 0402 | RES SMD 4.7K OHM 1% 1/10W 0603 |
| Package | Cut Tape (CT) | Tape & Reel (TR) |
| Series | ERJ-2RK | ERJ-3EK |
| Features | Automotive AEC-Q200 | Automotive AEC-Q200 |
| Operating Temperature | -55°C ~ 155°C | -55°C ~ 155°C |
| Package / Case | 0402 (1005 Metric) | 0603 (1608 Metric) |
| Supplier Device Package | 0402 | 0603 |
| Tolerance | ±1% | ±1% |
| Temperature Coefficient | ±100ppm/°C | ±100ppm/°C |
| Size / Dimension | 0.039" L x 0.020" W (1.00mm x 0.50mm) | 0.063" L x 0.031" W (1.60mm x 0.80mm) |
| Power (Watts) | 0.1W, 1/10W | 0.1W, 1/10W |
| Ratings | AEC-Q200 | AEC-Q200 |
| Height - Seated (Max) | 0.016\" (0.40mm) | 0.022\" (0.55mm) |
| Failure Rate | - | - |
| Resistance | 1 kOhms | 4.7 kOhms |
| Composition | Thick Film | Thick Film |
| Number of Terminations | 2 | 2 |
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1. What are the functions of chip fixed resistors?
Chip fixed resistors (chip resistors) play a vital role in electronic devices and systems.
Chip fixed resistors, also known as Chip Resistor, are one of the passive electronic components widely used in the modern electronic manufacturing industry.
1. Voltage division and current shunting: When the chip resistor is in series or parallel with other components such as light bulbs in the circuit, it can play the role of voltage division and current shunting. In a series circuit, the chip resistor shares the voltage with another component; in a parallel circuit, the chip resistor shares the current with other components.
2. Impedance matching: During the signal transmission process, the chip resistor helps to achieve the matching of the load impedance and the internal impedance of the excitation source by adjusting the impedance, thereby optimizing the signal transmission efficiency.
3. Filtering: In the RC charging and discharging circuit composed of a resistor and a capacitor in series, the chip resistor plays a filtering role, helping to stabilize the voltage and current in the circuit and reduce fluctuations and interference.
4. Special resistor functions: Special types of chip resistors, such as resistors made of semiconductor materials, have variable resistance values and are used to achieve more complex circuit functions, such as impedance control.
5. Save space and improve reliability: Due to the small size and light weight of chip resistors, circuit space costs can be greatly saved, making the design more refined. At the same time, its ability to adapt to reflow soldering and wave soldering improves the reliability and efficiency of production. -
2. What is the number of chip resistors?
Chip resistors are one of the commonly used components in electronic circuits, and their digital identification is an important basis for identifying resistance values and accuracy. The digital identification is usually printed on the surface of the resistor and consists of several digits. These digits not only indicate the specific resistance value of the resistor, but also imply the tolerance accuracy information of the resistor.
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3. Resistance value representation method
In the digital identification of chip resistors, the first three digits are usually used to indicate the resistance value. These digits are interpreted in decimal, such as "100" means the resistance value is 100 ohms. In some cases, if the resistor value is large, "R" may be used to indicate the decimal point position, such as "1R0" for a resistor value of 1.0 ohm.
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4. Resistors Guide
When interpreting the digital identification of chip resistors, you need to pay attention to the following points:
1. Make sure to correctly identify each digit in the digital identification to avoid misreading and misjudging the resistance value or accuracy.
2. Be familiar with the digital representation methods corresponding to different accuracy levels so that you can quickly and accurately judge the tolerance accuracy of the resistor.
3. In actual applications, you also need to consider the operating temperature range, power and other parameters of the resistor to ensure its stable and reliable performance.
