Precautions In The Use Of SMT Paste Processing

- Jan 16, 2017-

1, the ideal operating temperature of solder paste is 20 ~ 25 ℃, relative humidity of 40 ~ 60% RH, so the operating conditions of the most favorable printing paste.

2, the solder paste storage temperature requirements of 0 ~ 5 ℃, and to maintain stability, usually on the refrigerator.

Solder paste in use, removed from the refrigerator immediately after the packaging should not be opened, to put the work environment conditions that the indoor temperature for 1 to 2 hours after the balance of the packaging, to make the moisture in the solder paste completely dry.

3, in order to maintain a good printability, leakage must be fully integrated before printing, about 5 minutes after mixing and then put into use because of solder paste storage will produce separation, that is, the proportion of solder paste powder with a larger proportion of lighter Of the flux, additive and solvent mixture phase separation.

4, storage life, its validity is generally about 3 months. So do not buy too much at the time of purchase.

Previous:Introduction To SMT Common Knowledge Next:The Difference Between PCB And PCBA And Its Future Development