In todays post I will discuss the impact of rework on the overall FAB cycle time. Rework can happen for various reasons and at different process steps. Most common it occurs after a lot has been processed at a photo step. The picture below shows a typical scenario After a lot was processed at the…… Continue reading Rework and FAB cycle time
Equipment Uptime and FAB speed, part 3
My last post closed with a poll on achieved M-ratio values. Here are the results: Unfortunately, not too many readers participated – so the statistics of the result are a bit weak. To some extend the data is reflecting my personal experience – what I have seen in various FABs. There is a significant amount…… Continue reading Equipment Uptime and FAB speed, part 3
Factory Physics and Automation blog 