Semi E51
SEMI E51 defines the Facility Services and Termination Matrix, the standard format for a table that specifies every utility connection point a piece of equipment requires — power, gases, exhaust, cooling water, drains — along with each connection's exact location, size, and termination type, so a fab's facilities team can prepare the correct hookups before the tool ever arrives. SEMI E6 establishes that a vendor must deliver facilities documentation at all, but E6 doesn't specify the format that documentation has to take; E51 is the standard table structure that documentation is actually supposed to come in, so a facilities engineer comparing two vendors' termination matrices is comparing apples to apples rather than two differently organized documents that happen to cover similar information.
E51's practical value shows up at the installation crew level: a termination matrix built to E51's format tells a facilities technician exactly where on the tool's footprint each utility connects, what size and type of fitting to prepare, and which services are required versus optional — turning what would otherwise be an on-site discovery process (walking the tool, identifying each port, matching it to a fitting) into a checklist the crew can work from before the tool even clears the dock. This standardized format is also what makes SEMI E70's accommodation review practical to execute consistently: E70 needs to check a tool's facility requirements against a specific bay's actual supply, and that comparison only works efficiently if every vendor's termination data arrives in the same E51 table structure rather than requiring the reviewer to first reformat each vendor's own documentation style before the comparison can even begin.
E51 is the concrete table format that makes SEMI E6's documentation requirement and SEMI E70's accommodation review actually work together efficiently: E6 says documentation must exist, E51 says what shape it takes, and E70 is the process that consumes it against a specific bay's real constraints.