Detailed explanation of chip resistor code comparison table

With the continuous development of electronic products,Chip resistorAs a basic component in electronic components, it is widely used in various circuits. patchresistanceDue to its small size and stable performance, it is favored by electronic engineers and manufacturers. However, the code markings on chip resistors may be unfamiliar and difficult to understand for beginners. This article will focus on the "Chip Resistor Code Comparison Chart" to help readers fully understand the code meaning of chip resistors and their comparison methods.

The code on the chip resistor is usually a combination of numbers and letters, which is used to indicate the resistance value and error range of the resistor. Due to the small size of chip resistors, it is impossible to directly mark the complete resistance value, so codes are used for marking. Common chip resistor codes include three-digit, four-digit, and letter codes.

The three-digit code is the most common way to identify chip resistors. The first two digits represent significant figures, and the third digit represents the power of 10. For example, the code "472" means 47×10²=4700 ohms, which is 4.7 kiloohms. By consulting the chip resistor code comparison chart, the resistance value can be quickly and accurately identified.

The four-digit code is mainly used to identify chip resistors with higher accuracy. The first three digits represent significant figures, and the last digit represents the power multiplied by 10. For example, the code "1001" means 100×10¹=1000 ohms, which is 1 kiloohm. The four-digit code is suitable for resistors with a wider range of resistance values.

Some chip resistors use letter codes to indicate error levels and temperature coefficients. For example, the letter "J" represents an error of ±5%, and the letter "K" represents ±10%. Knowing these letter codes will help you select a resistor that meets your circuit design requirements.

Tolerance refers to the allowable deviation between the actual resistance value of a resistor and its nominal resistance value. Common tolerance codes include F (±1%), G (±2%), J (±5%), etc. The temperature coefficient code indicates the degree to which the resistance of the resistor changes with temperature, and the unit is generally ppm/°C. Correct interpretation of these codes ensures the stability of the circuit.

The chip resistor code comparison chart usually lists the resistance values ​​and errors corresponding to different codes in a table format. When using it, just look for the corresponding resistance value and tolerance information according to the code on the resistor. Electronic designers and purchasers can use these comparison tables to quickly confirm component parameters and avoid selecting wrong components.

Chip resistors come in a variety of package specifications, such as 0402, 0603, 0805, etc. Although the package size does not affect the meaning of the code, knowing the package size can help with proper board layout. Applicable package models are often indicated in the comparison table to facilitate purchase.

Due to different manufacturers, the way the chip resistor code is marked may be slightly different. Some high-precision resistors may have special markings or additional codes. It is recommended to carefully read the technical information provided by the manufacturer before use to ensure accurate identification.

Chip resistor code comparison chart is an indispensable tool in the electronic design and manufacturing process. By understanding the meaning of three-digit and four-digit codes and letter identification, combined with code knowledge of tolerances and temperature coefficients, users can accurately identify the resistance value and performance indicators of chip resistors. Mastering these contents not only improves the selection efficiency of electronic components, but also effectively ensures the performance stability of the circuit. I hope this article helps you understand and use chip resistor codes.