SOLDER COAT CO.,LTD.
Low cost / Lead-free solder alloy LLS series
Contains a low amount of silver. Therefore, cost can be reduced by approx. 20% to 40% when compared to SAC 305.
In the case of light loads, possess a creep life equivalent to that of SAC 305.
Alloy composition
| Products | Sn | Ag | Cu | Ni | Ge |
|---|---|---|---|---|---|
| LLS 219（SAC305） | Bal. | 3.0 | 0.5 | - | - |
| LLS 225 | Bal. | 0.3 | 0.7 | - | - |
| LLS 227 | Bal. | - | 0.7 | - | - |
| LLS 227N*1 | Bal. | - | 0.6 | 0.05 | ≦0.01 |
*1:Licensed by NIHON SUPERIOR CO., LTD.
Comparison of cost
| Products | Comparison of cost |
|---|---|
| LLS 219（SAC305） | 1.00 |
| LLS 225 | 0.65 |
| LLS 227 | 0.60 |
| LLS 227N | 0.62 |
Comparison of representative products and SAC 305 Comparison of ingot base
Comparison of flow character～Wetting
LLS 227 achieves solderability that is almost equal to that of LLS 219.
Mechanical characteristics
| Products | Strength(MPa) | Elongation(%) |
|---|---|---|
| LLS 219(SAC305) | 39.7 | 46 |
| LLS 225 | 34.6 | 50.3 |
| LLS 227 | 29.0 | 52.8 |
| LLS 227N | 30.0 | 53.1 |
Tensile speed : 5mm/min
Copper melting speed
