May 1998Valley Design Corp., HeadquartersRequest Info
Nonsilicon wafers complying with SEMI standards are available from Valley Design. They come in a variety of
sizes and surface finishes, and may be ordered to special thicknesses with tight tolerances including wafers as thin
as 0.001 in. Glass wafers are available in soda lime, BK 7, borosilicate glasses such as 7059 and Pyrex, and quartz.
Surface finishes to 10/5 are available. Ceramic wafers come with 99.6% and 96% alumina and aluminum nitride
scratch-free finishes to 0.3 µin. Other materials include silicon carbide with finishes down to 0.1 µin and sapphire.