Lead-Free Solder Paste Storage Best Practices
Paste viscosity and flux activity degrade with wrong temperature, humidity and thaw discipline. A disciplined storage routine is cheaper than reworking a line down.
Temperature window
Hold 0–10 °C; never freeze. Freeze-thaw cycles crack flux and separate powder.
Thaw before use
Thaw sealed 2–4 hours at room temperature to avoid condensation. Opening cold paste invites dew on the foil.
FIFO and shelf life
Track lot, date and open-time. Discard past expiry; do not blend old and new.
Key Takeaways
Key Takeaways
- Store at 0–10 °C, never freeze.
- Thaw sealed before opening to avoid condensation.
- Enforce FIFO and hard expiry dates.
