BANNOCKBURN, IL — The 90-day moving average bookings at North American printed circuit board fabricators in November rose 17.1% year-over-year, IPC announced today.

Bookings increased 13.6% from the revised October figure.

Shipments were up 1% compared to last year and down 2.5% sequentially, the trade group added.

The book-to-bill ratio for the month was up 80 basis points to 1.05. The mark is the highest since June.

The ratio is 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 IPC’s survey sample. A ratio of more than 1.0 suggests that current demand is ahead of supply.

“PCB shipments and orders continue to be somewhat volatile but remain in line with recent trends,” said Shawn DuBravac, chief economist, IPC. “While shipments slipped slightly below the recent average, orders rose above their respective average and are 17 percent higher than a year-ago.”

The figures are the aggregate of companies that participate in IPC’s North American PCB Statistical Program and include rigid PCB and flexible circuit sales and orders.