Description:============As pictured, a Framed150mm Vintage Silicon Wafer. Frame size is approximately 8 inches by 10 inchesby 2 inches.Warranty andReturns:=====================We understand thatthere may be compatibility issues, space constraints, or it just doesn’t lookperfect. This item can be returned within 14-days for ANY reason. However,shipping to and from is not refundable. Shipping:=========- Local pickup isalso available at no cost.- Most orders placedbefore 9am will ship the same day.About Us:=========The ComputerPreservation Group is dedicated to the preservation of historical computers. Tohelp fund ongoing operations, select items are made available. To learn more,please visit our website: www.computerpreservation.com. Thank you for your support!Stock#:10056Caption:Silicon WaferContaining Integrated Circuits150mm Diameter,~800nm Lithography, Circa 1990A wafer is a thinslice of crystalline silicon, used for the fabrication of integrated circuits.Wafers are formed of highly pure (99.9999999% purity), nearly defect-freesingle crystalline material. Wafers have flats cut into one side indicating thecrystallographic planes of the wafer. The wafer serves as the substrate formicroelectronic devices built in and over the wafer and undergoes manymicrofabrication process steps such as doping or ion implantation, etching,deposition of various materials, and photolithographic patterning. Finally theindividual microcircuits (Die) are separated and packaged.