Source: US. Bureau of the Census
Data on Unfilled Orders for the Semiconductor Industry are not available.
US. Bureau of the Census, Value of Manufacturers' Unfilled Orders for Durable Goods Industries: Computers and Electronic Products [U34SUO], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/U34SUO, July 25, 2016.