According to IC Insights’ latest report, number of IC manufacturers using 300mm wafers less than half using 200mm wafers, and is becoming top-heavy.

Figure 1

IC Insights said, prior to 2008, the 200mm wafer was used in more cases for manufacturing ICs than any other wafer size. However, since 2008, the majority of IC fabrication has taken place on 300mm wafers. Rankings of IC manufacturers by installed capacity for each of the wafer sizes.