RW13X70B183JB00 vs RW13X70A473JB00
| Part Number |
|
|
| Category | Through Hole Resistors | Through Hole Resistors |
| Manufacturer | Vishay Sfernice | Vishay Sfernice |
| Description | SFERNICE FIXED RESISTORS | SFERNICE FIXED RESISTORS |
| Package | Box | Box |
| Series | - | - |
| Features | - | - |
| Operating Temperature | - | - |
| Package / Case | - | - |
| Supplier Device Package | - | - |
| Tolerance | - | - |
| Temperature Coefficient | - | - |
| Size / Dimension | - | - |
| Power (Watts) | - | - |
| Height - Seated (Max) | - | - |
| Failure Rate | - | - |
| Resistance | - | - |
| Composition | - | - |
| Number of Terminations | - | - |
-
1. Through-hole resistor calculation method
The calculation method of through-hole resistor mainly depends on the basic calculation formula of resistor, that is, R=P*L/s, where R represents the resistance value, ρ is the resistivity, L is the length of the resistor, and S is the cross-sectional area of the resistor.
Through-hole resistors usually have a metal film or carbon film on the outside and a through hole in the middle. This structure allows for easy installation by inserting a metal rod. Through-hole resistors can be divided into precision and ordinary types. Precision plug-in resistors refer to resistors whose parameters meet certain requirements, such as a precision of 0.1%, a package of 1550, and a TCR (temperature coefficient) of 10PPM/℃. -
2. Resistor parameter marking
1. Direct marking method: directly mark the resistance value and allowable deviation of the resistor on the surface of the resistor. For chip resistors, 3-digit Arabic numerals are usually used to mark the resistance value, where the first digit represents the first significant digit of the resistance value, the second digit represents the second significant digit of the resistance value, and the third digit represents the multiple of the resistance value (that is, the number of 0s). For example, 203 represents 20kΩ, 471 represents 470Ω, and 105 represents 1MQ. For decimal ohms or integer values within 10Ω, specific symbols are also used, such as 1R2 represents 1.2Ω.
2. Text symbol method: Use three digits to mark the resistance value of the resistor, and no longer indicate the accuracy level (generally less than ±5%). This method is suitable for miniaturized electronic components, especially surface mount components and devices. For example, 3R9 represents 3.9Ω.
3. Digital method: Use three digits to represent the nominal value on the resistor, where the first and second digits are the effective value, and the third digit is the index (that is, the number of 0s), in ohms. Deviations are usually represented by text symbols.
4. Color code method: Use different colored strips or dots to mark the nominal resistance value and allowable deviation on the surface of the resistor. This method is more common in foreign resistors. There is a fixed correspondence between color and value, such as black represents 0, brown represents 1, red represents 2, and so on. -
3. Resistor parameters
Through-hole resistor 10k/0.25w parameters
The parameters of the through-hole resistor 10k/0.25w include nominal resistance 10KΩ, rated power 0.25W, accuracy 1%, and installation type is through-hole.
Nominal resistance: 10KΩ, indicating that the basic resistance of the resistor is 10,000 ohms.
Rated power: 0.25W, meaning that the maximum power the resistor can withstand continuously is 0.25 watts.
Accuracy: 1%, indicating that the deviation between the actual resistance of the resistor and the nominal resistance does not exceed 1%.
Mounting type: through-hole, indicating that this resistor is suitable for through-hole installation, usually for through-hole installation on circuit boards. -
4. Definition and function of through-hole resistors
A through-hole resistor is a resistor device that can fix the resistor body and wire by perforating holes to achieve the purpose of fixing and conducting current. Through-hole resistors are widely used in various circuits, such as power amplifiers, digital circuits, analog signal processors, etc.
