Hello, I am looking for data on two questions: 1. What is the average/acceptable yield of a PCB assembly line? 2. What is the average up-time of an SMT line (do most lines work 7 days-a week, 24 hours-a-day or what part of that time). I would be very grateful if you could provide such data or suggest appropriate sources for such information (including publications available for purchasing). Thank you. Daphne Raban [log in to unmask]