The two most commonly used types of lead-free solder are SnAgCu (tin-silver-copper, also called SAC) and SnCu (tin-copper). SnAgCu alloy with 3% silver and 0.5% copper (SAC305) was initially ...

The Reverse Hybrid process utilizes SAC (Sn-Ag-Cu) solder paste and BGA components with LTS (Low Temperature Solder) balls. Using a SAC reflow profile, this innovative method forms homogeneous ...