What are the methods and influencing factors for judging the quality of solder paste?

Solder paste isSMTAn indispensable material in processing, its quality determines the printing effect and welding effect. What are the general evaluation criteria for solder paste quality? What other factors can affect the quality of solder paste? Today, Shenzhen JJY Solder Paste Manufacturer is here to share with you the methods for judging solder paste quality and the influencing factors:

1After the solder paste is printed, it is evenly distributed with strong consistency.

2The solder paste pattern is consistent with the pad pattern, with clear edges and no adhesion phenomenon.

3The alignment error between the solder paste pattern and the solder pad pattern should be as small as possible.

4The amount of solder paste on the solder pad should be appropriate, generally0.8mg/mm2For the left and right, the fine-pitch components should be0.5mg/mm2Left and right;

5The area of the solder paste covering the solder pad should reach75%Above;

6After the solder paste is printed, it should remain stable without obvious collapse, and the misalignment should not exceed0.2mm; The misalignment of the pads of fine-pitch components should not exceed0.1mm:

7,PCBAThe substrate should be kept clean to avoid solder paste contamination.

8The storage and management of solder paste should be carried out to avoid the influence of factors such as temperature, humidity and oxidation, and to maintain the stability and reliability of the solder paste.

The quality of solder paste is an influenceSMTThe key factors for processing and the quality of electronic products are that we should carefully select and use solder paste, print in accordance with standards, check and evaluate the printing effect, promptly identify and solve problems, and improve the quality and efficiency of solder paste printing. Only in this way can we ensureSMTThe quality and performance of processed and electronic products meet the needs and expectations of customers.

The above content is shared by Shenzhen JJY Solder Paste Manufacturer for you. We hope it will be helpful to you. If you want to know more about solder paste andSMTKnowledge of surface mount technology (SMT) processing. Welcome to leave a message and interact with us!