Jun 28, 2026Success Stories

What are the main indicators of the accuracy of SMT surface mount technology equipment?

In SMT surface mount technology, accuracy is a crucial parameter. The accuracy of SMT soldering involves multiple aspects such as the positioning accuracy, repeatability accuracy.

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What are the main indicators of the accuracy of SMT surface mount technology equipment?

In SMT surface mount technology, accuracy is a crucial parameter. The accuracy of SMT soldering involves multiple aspects such as the positioning accuracy, repeatability accuracy, and resolution of the soldering machine. These accuracy indicators directly determine the accuracy and production efficiency of the soldering of electronic components. Below, Changheng Mechanical and Electrical will discuss with you the main accuracy indicators of SMT soldering machines. Interested friends, come and have a look!


First, let's talk about the positioning accuracy of the reflow oven. Positioning accuracy refers to the deviation between the actual placement position and the set position when the reflow oven is assembling components. This deviation size directly affects the quality and performance of the product.


There are mainly two factors that affect the assembly accuracy: translation error and rotation error. Translation error mainly comes from the X-Y axis positioning system, while rotation error is related to the accuracy of the component centering mechanism. Therefore, in the SMT assembly process, ensuring the positioning accuracy of the reflow oven is of utmost importance. Secondly, it is the repeatability accuracy of the surface mount machine.

Repeatability accuracy refers to the deviation between the positions of each subsequent soldering operation when the surface mount machine repeatedly sows at the same coordinate position. This indicator can reflect the stability and reliability of the surface mount machine during continuous operation. Generally, the repeatability accuracy of the surface mount machine is demonstrated through sample accuracy.


Therefore, when choosing a surface mount machine, we need to pay attention to its performance in terms of repeatability accuracy. At the same time, to improve repeatability accuracy, we need to regularly calibrate and maintain the surface mount machine to ensure the stability and accuracy of mechanical components. Use high-quality components and consumables, and reduce soldering errors caused by inconsistent components. Optimize the soldering program to ensure the consistency of each soldering action.
Finally, what we need to understand is the resolution of the reflow machine. Resolution refers to the minimum degree that the R-axis of the dispensing head can rotate after receiving the pulse command signal. The current advanced reflow machines have a resolution of 0.0024/pulse. The higher the resolution, the more precise the reflow machine is when making small adjustments, thereby improving the accuracy of the assembly.
In conclusion, the accuracy of SMT (Surface Mount Technology) soldering is one of the important indicators for evaluating the performance of the soldering machine. Understanding and paying attention to these accuracy indicators will help us make better choices and use the soldering machine more effectively, thereby improving the production efficiency and quality of SMT soldering.

Yinsaite Machinery Technology Co., Ltd. is a national high-tech enterprise specializing in the research, development, production, sales and service of AI/SMT equipment. It was established in 2010 and was founded by several experienced professionals in the industry.


The company adheres to the principle of liberating productivity and enabling automation to penetrate into every small and medium-sized enterprise. It adopts advanced research and development technologies, strict quality control and comprehensive after-sales services, making Inset Technology a benchmark company in the field of automation equipment and independent innovation.