8-inch wafer 12-inch photolithography chip Silicon wafer,Silicon Wafer 6/8/12 Inch Wafer Chip Wafer Monocrystalline,National Semiconductor NS638 DEC Memory Board 90010482,0226A9287G011 GE / General Electric SB-12 MOC SWITCH TEST,NTE Electronics 2N6426 Silicon NPN Transistor for Darlington