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

OneSolder pasteHow is the quality of it? What factors affect the quality of solder paste? How to judge it? These are the concerns of many solder paste buyers, which directly affect the subsequent processSMTThe quality of processing has a series of impacts on the entire processing of electronic products. The quality of solder paste printing in surface mount technology (SMT) processing is influenced by many factors. Today, JJY Solder Paste Manufacturer will discuss the criteria for judging solder paste quality and the influencing factors:

Regarding the quality of solder paste printing,Judgments should be made from the following points:

1The content of printed solder paste is uniform and has good consistency.

2The solder paste pattern is clear and there is no adhesion between adjacent patterns.

3The solder paste pattern and the solder pad pattern should be as accurate as possible.

4The amount of solder paste per unit area on the pad for surface mount processing isQ.8mg/mm2On the left and right, the fine-pitch components are0.5mg/mm2Left and right;

5The area of the solder paste covering the solder pad should be75%Above;

6After the solder paste is printed, there should be no severe sagging and the edges should be neat,The dislocation should not be greater than0.2mm; Thin-pitch component pads,The dislocation should not be greater than0.1mm.

7,PCBAThe substrate must not be contaminated by solder paste.

Shenzhen JJY Industrial Technology Co., Ltd. mainly engages in the production and operation of:SMTSolder paste manufacturers of solder paste, syringe solder paste, lead-free solder wire, wave soldering bar, automatic soldering wire, etc.