Analysis of National Standards for Comparison Table of Chip Resistor Packaging Dimensions

With the development of electronic technology, the application of SMT resistors in various electronic products is becoming increasingly widespread. The packaging size of SMT resistors has a crucial impact on the overall performance and stability of the product. This article will introduce you to the relevant knowledge and standards of the national standard for comparing the dimensions of SMT resistor packaging

1、 The role of the comparison table for the size of SMT resistor packaging

The comparison table of SMD resistor packaging dimensions is a detailed table that lists different sizes of SMD resistors and their corresponding packaging forms. By referring to this comparison table, we can quickly understand the packaging types of various sizes of SMD resistors, and choose the appropriate SMD resistor for specific applications. This is of great significance for improving product performance and reducing costs

2、 Comparison Table for Dimensions of Chip Resistor Packaging National Standards

In China, the national standard for the size of SMT resistor packaging is formulated by the National Standardization Administration (SAC). According to these standards, the packaging size of SMT resistors can be divided into the following types:

1 Series 0402, 0603, 0805, 1206, 1212, etc

These sizes of SMT resistors are widely used in various microcontrollers, digital circuits, and analog circuits. Their packaging forms include surface mount (SMT) and perforation (TH)

2 Series 0201, 0412, 0512, etc

These sizes of SMT resistors are commonly used in precision instruments and high-speed communication equipment. Their packaging form is mainly surface mount (SMT)

3 Series 01005, 02010, 04025, etc

These sizes of SMT resistors are mainly used in fields such as power filters, voltage dividers, and sensors. They come in various packaging forms such as surface mount (SMT), perforation (TH), and plastic sealing

3、 How to choose the appropriate size for SMT resistor packaging

When selecting SMT resistors, it is necessary to determine the appropriate packaging size based on the specific application scenario. The following suggestions are for your reference:

1 Considering electrical performance: Different packaging sizes can affect the rated power, resistance value, and temperature coefficient of SMT resistors and other electrical performance parameters. Therefore, when choosing, it is necessary to weigh these parameters based on actual needs

2 Pay attention to PCB layout: The layout of SMT resistors on the PCB board can also affect its performance and stability. For example, excessive patch resistance may cause a short circuit in the solder pad, while excessively small patch resistance may affect signal transmission speed. Therefore, these factors need to be fully considered when designing PCBs