Guideline for the storage and use of solder paste
1. When the solder paste is purchased, it is necessary to affix the label of the key auxiliary material control to distinguish different batches and control them to ensure "first-in-first-out".
The SMT technical team is responsible for the labelling of key excipients control, and is responsible for supervising the filling of labels.
condition.
2. When the unopened solder paste is not used for a long time, it should be stored in the refrigerator, and the refrigeration temperature should be at the temperature recommended by the solder paste manufacturer
Between the values, the solder paste storage temperature is generally specified: between 5 degrees Celsius and 10 degrees Celsius.
The solder paste storage temperature must be confirmed and recorded by the process technicians of each class every working day, and the data is recorded in its dedicated form
In the "Key Excipients Storage Record Form", it will be submitted to the person in charge of the SMT technical team for confirmation at the end of the month and stored for a period of 1 month.
Save the department S M T workshop.
3. The unopened and rewarmed solder paste should be placed at room temperature and not intended to be used within the next 24 hours.
Put the new back in the refrigerator for storage. Do not reheat the same bottle of solder paste more than twice, and report back to the process technician for more than two times.
reason.
4. The unused solder paste after opening should be covered with the inner cover. Push the inner cover until it is close to the surface of the solder paste, squeeze out the air inside, and then
Tighten the cover. The solder paste after the above treatment can be stored in the environment of the production site.
If it is used up within 24 hours, let the process technician determine whether it can continue to be used.
5. Unprinted solder paste and printed solder paste cannot be mixed and should be stored in separate bottles.
Baiqiancheng has been engaged in PCBA production for more than 18 years, focusing on all aspects of production, so there are very strict requirements for the storage and use of SMT solder paste, aiming at high quality PCBA production.
