SAN JOSE – The 90-day moving average of semiconductor equipment orders at North America-based manufacturers was $1.18 billion in January, up moderately over the revised December numbers.

The book-to-bill ratio was 0.95, continuing a four-month rise, said SEMI, the trade group that compiles the data. A ratio of 0.95 means that $95 worth of orders were received for every $100 of product billed for the month.

The three-month average worldwide bookings was up 7% sequentially and down 22.1% from January 2011. The three-month average of worldwide billings was $1.24 billion, down 4.7% from the revised December figures and 30.7% from a year ago.

The SEMI book-to-bill is a ratio of three-month moving averages of worldwide bookings and billings for North American-based semiconductor equipment manufacturers. Billings and bookings figures are in millions of US dollars.

Source: SEMI February 2012

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