RN73R2ATTD1381F100 vs RN73R2ATTD21R8D50
| Part Number |
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| Category | Chip Resistor - Surface Mount | Chip Resistor - Surface Mount |
| Manufacturer | KOA Speer Electronics, Inc. | KOA Speer Electronics, Inc. |
| Description | RES 1.38K OHM 1% 1/8W 0805 | RES 21.8 OHM 0.5% 1/8W 0805 |
| Package | Tape & Reel (TR) | -Reel® |
| Series | RN73R | RN73R |
| Features | Automotive AEC-Q200, Moisture Resistant | Automotive AEC-Q200, Moisture Resistant |
| Operating Temperature | -55°C ~ 155°C | -55°C ~ 155°C |
| Package / Case | 0805 (2012 Metric) | 0805 (2012 Metric) |
| Supplier Device Package | 0805 | 0805 |
| Tolerance | ±1% | ±0.5% |
| Temperature Coefficient | ±100ppm/°C | ±50ppm/°C |
| Size / Dimension | 0.079" L x 0.049" W (2.00mm x 1.25mm) | 0.079" L x 0.049" W (2.00mm x 1.25mm) |
| Power (Watts) | 0.125W, 1/8W | 0.125W, 1/8W |
| Ratings | AEC-Q200 | AEC-Q200 |
| Height - Seated (Max) | 0.024\" (0.60mm) | 0.024\" (0.60mm) |
| Failure Rate | - | - |
| Resistance | 1.38 kOhms | 21.8 Ohms |
| Composition | Thin Film | Thin Film |
| Number of Terminations | 2 | 2 |
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1. Chip fixed resistor classification?
1. Conventional series thick film chip resistors: including general-purpose resistors in sizes from 0201 to 0805, and resistors in sizes from 1206 to 2512.
2. High-precision and high-stability chip resistors: These resistors have high precision and high stability, with sizes ranging from 0201 to 0603, 0805 to 1210, and 2010 to 2512.
3. Conventional series thin film chip resistors: This refers to general-purpose thin film chip resistors with a wide range of sizes from 0201 to 2512.
4. Low resistance chip resistors: Suitable for circuit applications requiring low resistance values, with sizes ranging from 0402 to 1206, and 2010 to 2512.
5. Chip resistor arrays: Including raised and recessed chip resistor arrays, used in circuits that require multiple resistance values to work simultaneously.
6. Chip current sensor: used to detect the current in the circuit, with low temperature coefficient (TCR) characteristics. -
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.
