SAN JOSE, CA – North American manufacturers of semiconductor equipment posted $1.67 billion in orders in May (three-month average) and a book-to-bill ratio of 1.0, according to SEMI.

Bookings were about 6% greater than the April level of $1.57 billion and about 3% greater year-over-year.

Billings were up about 5% over April, and 15% over May of last year.