13 colour wall charts illustrating BGA
inspection criteria and defects are available as a pdf. This
allows a company to print A4 and A3 charts for use in their
own factory to aid inspection. The set provides examples of
tin/lead and lead-free joints on plastic ball grid array devices.
Also included are examples of the Ceramic Ball Grid Array, Column
Grid Array and many common process defects seen in manufacture.
Bob Willis, Process Engineering
Consultant Electronic Presentation Services