Detailed explanation and application guide of chip resistor resistance table

With the continuous development of electronic products,Chip resistorAs an important part of electronic components, it is widely used in various circuit designs. Learn about patchesresistanceThe resistance value and its corresponding specifications are crucial to electronic engineers and technicians. This article will focus on the "Chip Resistor Resistance Table" and introduce its basic concepts, common specifications, selection techniques and application precautions in detail to help readers better understand the use of chip resistors.

Chip resistor (SMD resistor) is a surface mount resistor with small size and light weight, suitable for automated production. It controls the flow of current through the resistance value to ensure the normal operation of the circuit. The resistance of chip resistors is usually measured in ohms (Ω) and ranges from a few ohms to several megaohms.

The resistance of chip resistors is usually identified by a three- or four-digit numerical code. In the three-digit code, the first two digits are significant digits and the third digit is the multiplier. For example, "103" means 10×10³=10kΩ. The four-digit code is more precise, with the first three digits being significant digits and the fourth digit being the multiplier. Understanding the coding rules will help you quickly identify the resistor value.

Commonly used chip resistor resistance values ​​include 10Ω, 100Ω, 1kΩ, 10kΩ, 100kΩ, etc. According to international standards (E series), chip resistors usually use E24, E48, and E96 series resistance values ​​to meet different accuracy requirements. The following are some examples of common resistance values:

10Ω、15Ω、22Ω、33Ω

100Ω、150Ω、220Ω、330Ω

1kΩ、1.5kΩ、2.2kΩ、3.3kΩ

10kΩ、15kΩ、22kΩ、33kΩ

Chip resistors not only have resistance parameters, but also power levels, such as 1/16W, 1/10W, 1/8W, 1/4W, etc. The power rating determines the maximum power the resistor can handle. Common size specifications include 0402, 0603, 0805, 1206, etc. The larger the number, the larger the volume and the stronger the power tolerance.

When selecting chip resistors, the resistance value, power level and accuracy need to be determined according to circuit design requirements. Too large or too small resistance will affect circuit performance, and insufficient power will cause the resistor to burn out. It is recommended to refer to the resistance table and actual application to make a reasonable selection.

A digital multimeter is usually used to measure the resistance of chip resistors. The circuit power supply needs to be disconnected during measurement to avoid misreading. For precision resistors, it is recommended to use a high-precision ohmmeter for measurement to ensure that the resistance value meets the design requirements.

Chip resistors are widely used in current limiting, voltage dividing, biasing, filtering and other circuit links. By properly configuring the resistance value, stable circuit operation and signal conditioning can be achieved. The resistance table provides a standard reference for designers and helps in quick selection and replacement.

The chip resistor resistance table is an important tool for electronic design and maintenance. Mastering its coding rules, common resistance values, power levels and size specifications will help to accurately select and apply chip resistors. Through the rational use of chip resistors, the performance and reliability of electronic products can be guaranteed. We hope that the content of this article can help readers deeply understand the chip resistor resistance table and provide strong support for practical work.