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Bending, Forming and Flexing Printed Circuits
March 8, 2007 |Estimated reading time: 1 minute
In the printed circuit board industry there are generally two main types of circuit boards--rigid and flexible printed circuit boards. There is a tremendous variety of these general types; however the industries that specialize in one type may have some weakness in understanding some issues related to the other type. Specifically, the flexible circuit industry has come to understand bending, forming and dynamic flexing motion of circuits. The rigid circuit board industry typically will not understand these issues as well. Those who work in the rigid board circuit industry are typically those who fabricate the high-frequency circuit boards. Due to this, there have been several issues with bending,forming and flexing high frequency circuit boards.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
All types of circuit boards have the same basic theory for bending, forming and flexing. However the circuit board construction and the materials used, will limit which type of board can feasibly be bent, formed or flexed. Normally woven glass-reinforced circuit boards cannot be bent, formed or flexed reliably. There are many different types of materials used for fabricating high frequency circuit boards and there are several that are non-glass woven reinforced. This article addresses bending, forming and flexing circuits built with non-glass woven circuit materials.
Click here to download the complete pdf article.
This article was originally published in the IPC Printed Circuits Expo 2007 Conference Proceedings and is republished here with permission.