Analysis of the composition of resistor model naming
The model naming of domestic resistors follows a standardized system, which refines and classifies many characteristics of resistors and expresses them through certain combinations of letters and numbers. This naming system includes four basic parts, each part carries different dimensions of information about the resistance characteristics, as follows:
Main designation: This is the first part of the model name, usually consisting of letters, and is used to identify the basic category of resistors as electronic components. For example, "R" represents a resistor, and "W" represents a potentiometer. This part of the setting makes the basic functions of the resistor clear at a glance.
Material code: As the second part of the model name, the material code indicates the material of the resistor through letters. From carbon film (T), synthetic carbon film (H), to metal film (J) and nitride film (Y), different material codes not only reflect the manufacturing process of the resistor, but also indirectly indicate its electrical performance and application scenarios. .
Classification code: This part is usually represented by numbers (letters are used in individual cases) and details the specific types of resistors. The numbers "1" and "2" indicate common types, while the numbers "3" to "9" cover diverse resistor categories from ultra-high frequency to high temperature, precision, and high voltage. In addition, letters such as "G" represent high power, while "T" represents adjustable type. This classification further refines the application range and performance requirements of the resistor.

Serial number: As the last part of the model name, the serial number is represented by numbers. This part is designed to distinguish different products in the same category. Through the serial number, the external dimensions, resistance value range and other performance indicators of the resistor can be further identified, providing a more accurate basis for selection.
Application examples and selection guide
Taking the model "RT11" as an example, we can decode its meaning one by one: the first character "R" clearly indicates that the component is a resistor; the second character "T" indicates that it is made of carbon film material. Resistors of this material usually have a high cost. It has the characteristics of high efficiency and wide application range; the repeated appearance of the number "1" in the classification code indicates that this is an ordinary carbon film resistor, suitable for most basic circuit applications; the final serial number "1" further subdivides Specific specifications and performance parameters of this resistor.
Conclusion
Through the above-mentioned in-depth analysis, it is not difficult to find that the naming rules of domestic resistor models contain rich information, which not only reflects the physical and chemical characteristics of the resistor, but also reflects its application fields and performance requirements. Mastering this naming method will help professionals make more reasonable and accurate judgments in the selection and application of resistors, thereby improving the performance and reliability of electronic products.