SAN JOSE – SEMI this week revised its January and February semiconductor equipment book-to-bills. Corrected figures for February show the three-month average for bookings was $1.4 billion, with billings at $1.43 billion, and a ratio of 0.98.

Corrected figures for January show the three-month average for bookings was $1.45 billion, with billings at $1.45 billion, and a ratio of 1.0.

The trade group had earlier reported book-to-bills of 1.04 and 1.05 for January and February, respectively.

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.