Hello all! That;s not practical one. Can you please tell me where I could find information about PGA uBGA and CSP? I need some historical information what is the technology and topology of the packages, different types Packages. For CSP and FC I already found some interesting articles, but for PGA and uBGA the information is very poor. If someone read something interesting about the things I mentioned or knows such sites, I would be greatfull for the information!