bending radius

Flex PCB Bend Radius – Ensure compliance with specified bend radius limitations.

When the FPC flexible circuit board is bent, it experiences different types of stress, which can lead to delamination and copper foil breakage. Careful laminate structure design and calculation of minimum bending radius are important to ensure symmetrical stress distribution and prevent damage. Different types of copper have varying allowable deformations, which must be considered based on the specific application. Dynamic flexibility applications involve constant deformation of the copper skin.

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Minimum bend radius for flexible PCBs

As a PCB expert, understanding the importance of designing flexible PCBs with the ability to bend is crucial, with factors such as bending radius, lamination structure, substrate thickness, number of layers, and covering material flexibility all impacting the overall functionality and durability of the circuit board. Calculating the bending radius can be done using standard guidelines or formulas, with the minimum bending radius typically between 1mm and 6mm for single-layer and double-layer flexible PCBs to ensure reliable dynamic bending stress.

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