The vital purpose of this article is to know about Use of SOI Wafers. SOI wafers were introduced in 1978 as an another technology due to their high speeds, error-reduction, low power usage, improved scaling and their protection to latch-up. Initially, Silicone on Insulator processes were used in small place markets, but these applications have broadened to the ordinary markets over the years. SOI wafers are nowadays broadly used in microprocessors, servers and RF signal processors as well as in institution or college experiment research.