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
Equipment Uptime and FAB speed, part 2
To illustrate which uptime pattern from the last post might be more favorable I will add some tool utilization to the same 3 charts: the combined charts for the 3 scenarios are these: This example assumes that the productive usage every single day is a flat 80% of the total time, which is a very…… Continue reading Equipment Uptime and FAB speed, part 2