Chip resistor code and resistance value comparison table. The secret to quickly mastering resistor values.

In modern electronic design,Chip resistorAs one of the most commonly used components, its code and resistance value comparison table is essential knowledge for every engineer. This article will introduce the patch in detailresistanceThe corresponding relationship between the code and resistance value helps you quickly and accurately identify the resistance value and improve work efficiency.

1. Basic knowledge of chip resistors

Chip resistors, also known as surface mount resistors, are widely used in various electronic equipment due to their small size and easy installation. There will be a series of codes on each chip resistor. These codes not only represent the resistance value of the resistor, but also include important parameters such as manufacturer information and tolerance level.

2. Analysis of code name system

The code name of the chip resistor is usually a combination of numbers and letters, such as "1005", "104", etc. Among them, "1005" represents the size, and "104" directly reflects the resistance of the resistor. The "4" here refers to the number of digits after the decimal point, so "104" is actually equal to 100,000 ohms (i.e. 100KΩ).

3. Common resistance ranges and codes

103: 10,000 ohms (10KΩ)

154: 15,000,000 ohms (15MΩ)

222: 470 ohms

473: 47,000 ohms (47KΩ)

911: 91 ohms

Understanding these correspondences can greatly simplify the search and recording process.

4. Tolerance level and code

In addition to the basic resistance value, the code also includes the tolerance level of the resistor, such as "J", "K", "M", etc. Among them, "J" means ±5% tolerance, "K" means ±10%, and "M" means ±20%. Understanding these is critical to choosing the right components.

5. Temperature coefficient and stability

Some codes may also imply the temperature coefficient or stability index of the resistor, which is particularly important in situations where precise temperature control is required.

6. Manufacturer code identification

Different manufacturers may use different prefixes or suffixes to identify their own products. Being familiar with these codes can help quickly identify the source and facilitate subsequent technical support or replacement.

7. Precautions in practical application

In actual circuit design, factors such as the power and packaging type of the resistor also need to be considered to ensure that the selected resistor can meet the circuit requirements.

8. Use tools to assist in querying

With the development of technology, many online tools and APPs can help quickly query the code name and resistance value of chip resistors, greatly improving work efficiency.

9. Continuous learning and updating

The electronics industry is changing with each passing day, and new code standards and products are constantly emerging. Continuous learning and staying current on the latest industry standards and technology trends are key to mastering this skill.

10. Practice brings true knowledge

Finally, although theoretical knowledge is important, only by continuously accumulating experience through practical operations can we truly know how to deal with various complex situations.

Mastering the comparison table of chip resistor codes and resistance values ​​is one of the basic skills of every electronic engineer. Through the introduction of this article, I hope it will provide you with convenience in your daily work and make you more comfortable in complex circuit design. With the deepening of practice, you will discover more skills and rules, and constantly expand the boundaries of your knowledge.