Entries by Lengyel Norbert

Bow and Twist in Printed Circuits

What is Bow and Twist? According to the IPC-A-600 standard bow and twist (flatness of the board) is : “Flatness of printed boards is determined by two characteristics of the product; these are known as bow and twist. The bow condition is characterized by a roughly cylindrical or spherical curvature of the board while its […]