Substrates as thin as 10 microns thick with circuitry were completed. A recent order called for 5″ diameter wafers of 3 mil thickness (polished on both sides). Valley Design offers a complete line of lapped, polished and diced substrates, Sapphire, Glass, flat optical pieces and other electro-optical materials.
Scratch/Dig | Angstroms Ra | Microinches Ra |
---|---|---|
10/5 | 10A | .040u” |
20/10 | 20A | .080u” |
40/20 | 30A | .12u” |
60/40 | 40A | .16u” |
80/50 | 50A | .2u” |
Note: Approximate optical scratch/dig and Ra relationship for surface finishes.
Wafer, chip, dice, die thinning related Web sites: