Modern electronic manufacturing field, precision chip electronicsresistanceBecause of its small size and stable performance, it is widely used in various electronic devices. In order to facilitate identification and use, these resistors are usually silk-screened to identify their resistance values and specifications. This article will introduce in detail the precision chip electronic resistor screen printing comparison table to help engineers and technicians quickly and accurately identify resistance parameters and improve work efficiency.
1. What is precision chip electronic resistor screen printing?Precision chip electronic resistors are surface mount components that are usually small in size, making it difficult to directly identify their resistance with the naked eye. Silk screen technology prints numbers and letter codes on the surface of the resistor to indicate its resistance value, error range, power level and other information. Correct interpretation of these silk screen codes is key to ensuring accuracy in circuit design and repair.2. Basic composition of silk screen codeGeneral precisionChip resistorThe silk screen code consists of numbers and letters, and mainly contains the following content:Resistance code: usually a three-digit or four-digit number indicating the resistance of the resistor.
Error code: indicates the accuracy level of the resistor, such as ±1%, ±5%, etc.
Power level: Some resistors will be marked with power, such as 1/8W, 1/4W, etc.
Understanding these basic components helps to quickly identify resistance parameters.
3. Analysis of three-digit resistance codeThe three-digit resistance code is the most common way of identification, with the first two digits representing the significant digits and the third digit being the multiplier (expressed as a power of 10). For example:"472" means 47×10²=4700 ohms (4.7 kiloohms).
“105” means 10×10⁵=1,000,000 ohms (1M ohms).
Mastering this rule, you can quickly convert the silk screen into actual resistance value.
4. Analysis of four-digit resistance codeFour-digit numeric codes are typically used for precision resistors, with the first three digits being the significant digits and the last digit being the multiplier. For example:"1001" means 100×10¹=1000 ohms.
"4992" means 499×10²=49900 ohms.
This marking method is suitable for resistors with higher precision and more complex resistance ranges.
5. How to identify error codesError codes are generally represented by letters or symbols. Common ones include:"J" stands for ±5%
“K” stands for ±10%
"F" stands for ±1%
Understanding the error code helps to select resistors that meet design requirements and ensure circuit stability.
6. Examples of common resistance values and silk screen comparison tablesThe following is the corresponding relationship between the resistance values of some common precision chip resistors and silk screen codes:100 ohms: 100
1 kiloohm: 102
10 kiloohms: 103
100 kiloohms: 104
1 megohm: 105
Through the comparison table, engineers can quickly check the resistance parameters to avoid errors.
7. Application scenarios and selection suggestions for chip resistorsPrecision chip resistors are widely used in mobile phones, computers, automotive electronics, industrial control and other fields. When selecting, the appropriate resistance value, error and power level should be selected according to the circuit requirements to ensure circuit safety and performance.The silk screen marking of precision chip electronic resistors is an important means of identifying electronic components. By understanding the composition of the silk screen code, the analysis of three- and four-digit resistance values, and the meaning of the error code, technicians can quickly and accurately identify resistance parameters to ensure the quality and performance of electronic products. Mastering the precision chip electronic resistor screen printing comparison table is a key step to improve the efficiency of electronic manufacturing and maintenance. I hope this article can provide a practical reference for your electronic design and maintenance work.
