SOLDER COAT CO.,LTD.
Super long life / Lead-free solder alloy LLS 219β
Generation of inter-metallic compounds from the copper in the land and solder alloy tin is minimized, thus achieving higher reliability.
Increased wettability and decreased voiding means improved solderability.
Patents in Japan and other major countries means safer supply to you.
Mechanical characteristics
| Products | LLS 219β | LLS 219 |
|---|---|---|
| Specific gravity | 7.38 | 7.38 |
| Tensile strength(MPa) | 40.8 | 39.7 |
| Elongation(%) | 70 | 74 |
| Hardness(Hv) | 14.5 | 13.8 |
| Coefficient of linear expansion (*10-6/K) | 23.5 | 20.8 |
Thermal cycle test of soldering part
(2000 cycle)
-40°*30min⇔125°*30min (per cycle)
Slight cracking appeared in the LLS 219β, but the nature of cracking shows the spread-minimizing effect is working.
Soldering characteristic
Wettability
Occurrence of voids X-ray observations
Comparison of crack incidences
