Alpha EF-8000 Soldering Flux is a rosin-containing flux designed to provide the attributes of excellent solderability and reliability in general and high-density boards in both Lead-Free and eutectic tin/lead processes. It is designed to have low bridging on bottom side QFP’s with 144-168 leads as well as superior performance in hole fill and solderballing. Additionally, it provides good lead free solder joint cosmetics with an evenly spread, tack free residue.