Flexible Circuits

Definition

Flexible Circuits are made from materials allowing for a non-planar positioning within the end product.  Typical materials are polyimide-based, and can go under trade names such as Kapton (DuPont).

Applications

Often flexible circuits are used for applications that have repeated flex cycles, such as cellular phones, doors, etc.  A growing application for flexible circuits are their use as a connector in LED-based lighting systems.  Often, there are two components: a metal substrate LED PCB; an FR-4 based digital driver PCB.  These two devices are often connected with a high profile and sometimes costly connector cable; however, a flexible PCB in its place provides a lower profile, slimmer design, and higher reliability.


 

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Flexible Printed Circuit Sample Boards