Electronic components field,Chip resistorIt is widely used because of its small size and stable performance. Various types of patches on the marketresistanceThere are a wide variety of them, among which "B202" is a common model identification. Many electronics enthusiasts and engineers are concerned about "what is the resistance of the chip resistor B202". This article will analyze in detail the meaning of the resistance value of chip resistor B202, and introduce its related characteristics and applications to help everyone better understand and choose.
1. The meaning of the resistance value of chip resistor B202The model number of a chip resistor usually consists of letters and numbers, indicating the resistance and accuracy of the resistor. The "B" in B202 represents the accuracy grade or package type of the resistor, while "202" is the resistance code. According to the internationally accepted three-digit resistance marking method, the first two of the first three digits are significant digits, and the third digit is the multiplier (the power of 10).
Specific calculation:
The number "202" means that the first two digits are "20" and the third digit is "2", that is, multiplied by 10² = 100.
Therefore, resistance = 20 × 100 = 2000 ohms (2kΩ).
To sum up, the resistance value of chip resistor B202 is 2kΩ.
2. Analysis of marking rules for chip resistors1. Three-digit encoding method
Chip resistors often use a three-digit method to identify the resistance value. The first two digits are significant figures, and the third digit is the multiplier. For example, "103" is 10×10³=10kΩ.
2. The meaning of letter prefixes
Letters such as "B", "C", "R", etc. usually indicate package size, accuracy level or manufacturer's specific code. Different manufacturers may have differences and need to be combined with specific data manuals.
3. Accuracy and error range
The accuracy level of the chip resistor affects the error range of its actual resistance value, which is commonly ±1%, ±5%, etc. Please refer to the manufacturer's instructions for the specific accuracy of B202.
3. Common packaging specifications of chip resistor B202Chip resistors have a variety of packaging specifications, such as 0402, 0603, 0805, etc., which affect their size and power tolerance. B202 models usually correspond to standard packages and are suitable for conventional circuit board designs.
1. Small size, convenient for automated production.
2. Suitable for high-density installation and save space.
3. Different packages correspond to different rated powers, commonly ranging from 0.1W to 0.25W.
4. Application scenarios of chip resistor B2021. Circuit current limiting protection
2kΩ resistance is suitable for signal conditioning, current limiting protection and other occasions.
2. Voltage divider
Can be used in conjunction with other resistors to achieve voltage dividing function.
3. Filter circuit
Use with capacitors to improve signal quality.
4. General electronic equipment
Widely used in mobile phones, computers, home appliances and other electronic products.
5. How to correctly choose chip resistor B2021. Confirm the resistance and power required by the circuit.
2. Select the appropriate package with reference to the circuit board space.
3. Pay attention to the resistance accuracy and temperature coefficient to ensure circuit stability.
4. Choose chip resistors produced by regular manufacturers to ensure quality.
6. Precautions when purchasing chip resistor B2021. To prevent counterfeit and shoddy products, it is recommended to purchase through formal channels.
2. Pay attention to the consistency of packaging labels and specifications.
3. Pay attention to storage conditions to prevent moisture from affecting performance.
The resistance of the chip resistor B202 is 2kΩ, which is a common and practical chip resistor model. Understanding its resistance marking rules, packaging specifications and application scenarios will help engineers and electronics enthusiasts make reasonable selections and improve circuit design efficiency and stability. When purchasing, you should pay attention to its accuracy, power and quality to ensure the reliable operation of electronic products. Through the detailed analysis of this article, I believe you have a comprehensive understanding of "what is the resistance of the chip resistor B202".
