BANNOCKBURN, Ill., USA, October 3, 2011 IPC Association Connecting Electronics Industriesannounced today the August findings from its monthly North American Printed Circuit Board (PCB) Statistical Program. PCB Industry Growth Rates and Book-to-Bill Ratios Announced Rigid PCB shipments were down 4.2 percent and bookings were down 6.5 percent in August 2011 from August 2010. Year to date, rigid PCB shipments increased 1.5 percent and bookings declined 9.6 percent. Compared to the previous month, rigid PCB shipments increased 13.7 percent and rigid bookings increased 15.4 percent. The book-to-bill ratio for the North American rigid PCB industry in August 2011 was at parity at 1.00. Flexible circuit shipments in August 2011 were down 6.5 percent and bookings declined 21.4 percent compared to August 2010. Year to date, flexible circuit shipments increased 1.9 percent and bookings increased 3.6 percent. Compared to the previous month, flexible circuit shipments increased 14.0 percent and flex bookings were up 3.2 percent. The North American flexible circuit book-to-bill ratio in August 2011 remained high at 1.14. For rigid PCBs and flexible circuits combined, industry shipments in August 2011 decreased 4.4 percent from August 2010, as orders booked decreased 8.0 percent from August 2010. Year to date, combined industry shipments were up 1.5 percent and bookings were down 8.5 percent. Compared to the previous month, combined industry shipments for August 2011 increased 13.7 percent and bookings increased 14.3 percent. The combined (rigid and flex) industry book-to-bill ratio in August 2011 remained above parity at 1.02. Although North American PCB sales in August continued below last years levels, growth picked up from July to August, said IPC President CEO Denny McGuirk. 牎癟he book-to-bill ratio has been trending upward for the past five months, he added, which suggests that sales should hold up through the rest of this year. The book-to-bill ratios are calculated by dividing the value of orders booked over the past three months by the value of sales billed during the same period from companies in IPCs survey sample. A ratio of more than 1.00 suggests that current demand is ahead of supply, which is a positive indicator for sales growth over the next two to three months. Book-to-bill ratios and growth rates for rigid PCBs and flexible circuits combined are heavily affected by the rigid PCB segment. Rigid PCBs represent an estimated 89 percent of the current PCB industry in North America, according to IPCs World PCB Production Report.