The following is a list of equipment where 4 inch round substrates are allowed.
Al, Ti, or W wet etching or oxide etching
Single wafer; Default 4" config; Can be converted to 6" config; pieces need to be attached to carrier wafer; Restrictions: Can not etch metals or metal oxides with no volatile by-products (shorting & arcing issues)
Bakes wafers after resist coating.
Automatic development.
Restricted to non-conductive films only
Manual development of resist in beakers and Headway (manual resist spinner). SNF approved developers (acid or base). No solvents!
Single wafer tool with auto loading from a cassette. Pieces need a pocket carrier wafer for transport. Chuck temperature controls wafer heating.
1:1 Contact Aligner. Backside align.
Reactor located inside glovebox
Wet Resist Removal: SRS-100 or PRS1000
Isotropic Si etching; can be used for backside Si removal on small pieces
1:1 Contact Aligner. Backside align, including IR.
Resist as mask allowed