alfa 338ALPHA OM-338 Solder paste Lead free is a no-clean solder paste desned for a broad range of applications. OM-338’s broad processing window is desned to minimize transition concernsDeliver excellent solder joint cosmetics with Alpha OM338 SAC305 lead-free solder paste! This product contains 96.5% Tin, 3.0% Silver, and 0.5% Copper.