North American Semiconductor Equipment Industry Posts August 2011 Book-to-Bill Ratio of 0.80

SAN JOSE, Calif. – September 15, 2011 – North America-based manufacturers of semiconductor equipment posted $1.18 billion in orders in August 2011 (three-month average basis) and a book-to-bill ratio of 0.80, according to the August Book-to-Bill Report published today by SEMI. A book-to-bill of 0.80 means that $80 worth of orders were received for every $100 of product billed for the month.

The three-month average of worldwide bookings in August 2011 was $1.18 billion. The bookings figure is 8.8 percent less than the final July 2011 level of $1.30 billion, and is 34.8 percent below the $1.82 billion in orders posted in August 2010.

The three-month average of worldwide billings in August 2011 was $1.48 billion. The billings figure is 3.0 percent less than the final July 2011 level of $1.52 billion, and is 5.1 percent less than the August 2010 billings level of $1.55 billion.

“Weaker DRAM demand, foundry spending reductions and near-term uncertainties about electronics demand are reflected in declining sales trends for new semiconductor manufacturing equipment,” said Stanley T. Myers, president and CEO of SEMI.  “Consequently, the SEMI 3-month average billings are at levels last seen in June of 2010.”

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 U.S. dollars.


(3-mo. avg)



March 2011




April 2011




May 2011




June 2011




July 2011 (final)




August 2011 (prelim)




Source: SEMI September 2011

The data contained in this release were compiled by David Powell, Inc., an independent financial services firm, without audit, from data submitted directly by the participants. SEMI and David Powell, Inc. assume no responsibility for the accuracy of the underlying data.

The data are contained in a monthly Book-to-Bill Report published by SEMI. The report tracks billings and bookings worldwide of North American-headquartered manufacturers of equipment used to manufacture semiconductor devices, not billings and bookings of the chips themselves. The Book-to-Bill report is one of three reports included with the Equipment Market Data Subscription (EMDS).

SEMI is the global industry association serving the manufacturing supply chains for the microelectronic, display and photovoltaic industries. SEMI member companies are the engine of the future, enabling smarter, faster and more economical products that improve our lives. Since 1970, SEMI has been committed to helping members grow more profitably, create new markets and meet common industry challenges. SEMI maintains offices in Beijing, Bengaluru, Berlin, Brussels, Grenoble, Hsinchu, Moscow, San Jose, Seoul, Shanghai, Singapore, Tokyo, and Washington, D.C. For more information, visit

Association Contacts

Dan Tracy/SEMI
Tel: 1.408.943.7987

Deborah Geiger/SEMI
Tel: 1.408.943.7988

Editor’s Note:

Next SEMI Book-to-Bill: October 20, 2011, at 3:00 p.m. PDT

For information on SEAJ Book-to-Bill Report, visit 

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