Lead-Free SMT Rework and Repair
3-Day Hands-on Training
This is a 3-day worker proficiency course focusing on lead-free soldering of surface mount components. This class will be conducted with up to 8 students per class. Initial course discussion (about 3 hours) focuses on lead-free solder, lead-free finishes, lead-free materials, lead-free migration, and lead-free impact on rework operations. A review of soldering basics follows. Objectives of this review are to assure student understanding of soldering, the roles of solder, flux, and heat sources, and how these are applied in SMT soldering. The balance of the class is directed to hands-on SMT lead-free soldering exercises. These include installation and removal of surface mount chip, gull wing, and J-lead components. Each exercise is preceded by instructor demonstration of the assembly/removal technique. All assembly/soldering must meet IPC Class 3 requirements. Student workmanship is evaluated jointly by student and instructor via microscope and color monitor projection. An (optional) SMT soldering exercise on Day 3 verifies student understanding and application of acceptable soldering principles. Reference workmanship standard used in class may be either IPC J-STD-001D or IPC-A-620D. Both include reference to lead-free solders.