Semi E117

SEMI E117 specifies the mechanical and electrical interface for a reticle load port — the physical docking station on a lithography scanner or reticle stocker where an E100-family reticle SMIF pod sets down and transfers its reticle into the tool — distinct from the wafer load ports E15/E63 already standardize. A reticle load port has to open a sealed reticle pod, extract a single fragile photomask without touching its pattern side, and present it to the scanner's reticle-handling robot, which is a mechanically different problem from opening a FOUP and presenting wafers — E117 is what fixes that reticle-specific load-port interface so stocker and scanner vendors can build to one standard dock geometry regardless of which reticle-pod variant (E100, E111's RSP150, or E112's MRSP150) is arriving.

The reason reticle load ports needed their own standard rather than reusing E15/E63's wafer load-port spec is that a reticle is a single, uniquely identified, highly defect-sensitive glass plate rather than one of 25 wafers in a cassette, so the dock has to open a pod, isolate and present exactly one reticle, and do it without any contact on the pattern side — a mechanically distinct sequence from indexing wafer slots. E117 gives scanner and reticle-stocker vendors that fixed dock geometry and open/present sequence so a fab can mix reticle-handling equipment from different vendors on the lithography bay the same way E15/E63 already let it mix wafer load ports elsewhere in the fab, closing the one load-port category those wafer-focused standards never covered.

E117 is what makes the lithography bay's reticle-handling equipment vendor-interchangeable the same way E15/E63 already made wafer load ports interchangeable elsewhere in the fab — the missing standard that closes the reticle-specific gap those wafer-focused specs were never designed to cover.