Usage and problem-solving of solder paste

1. It is best not to store solder paste in the refrigerator for more than one month,

2. After opening the solder paste, it is best to use it all at once on the same day. Solder paste that has exceeded its expiration date should never be used. The solder paste scraped back from the leakage plate should also be sealed and refrigerated.

3. Thaw the solder paste for at least four hours before use, and then stir for at least 5 minutes using a blender or by hand

4. When placing solder paste on the steel mesh, try to put the amount of solder paste used as much as possible, not too much, just enough grams. Putting too much or using solder paste for too long may result in virtual soldering, poor soldering, and other phenomena

5. Add new solder paste to the steel mesh every hour

6. The circuit board on the steel mesh should be heated within half an hour and should not be left untreated for too long, as it will oxidize if left untreated for too long

7. The soldering process must be adjusted according to the furnace temperature gauge of the solder paste

8. Solder joints containing BI solder paste are the most fragile, and they may detach when subjected to certain pushing forces. If the circuit board can withstand high temperatures, it is best not to choose BI solder paste without solder paste

9. The oxidation standard of copper on circuit board solder pads is related to the use of solder paste. If the copper oxidation standard is set, it will affect the oxidation rate of solder paste