3. Quadrupled size of IC

Subsequent doubling does not aid the bottom line.
    16 ICs attempted
   - 4 defective ICS
    -- -------------
    12 good ICs -- a 75% yield

x $576 per IC (Twice previous cost
 -----       + another 20% premium)
 $6912
-  120 (same labor/packaging costs
 -----                   at $10/IC)
 $6792 "profit"

 -- only a $48 increase
     over Standard Process

"http://www.physics.udel.edu/~watson/scen103/wafer/wafer3.html"
Last updated Nov. 14, 1996.
Copyright George Watson, Univ. of Delaware, 1996.