Meco Elektronik GmbH & Co. KG 

Rigid-flexible circuit boards

Technologically, a distinction is made here between symmetrical and asymmetrical structures, the asymmetric solution being the more cost-effective.

The advantages of asymmetric rigid flex PCBs:

• Reliable connection between flexible and rigid areas

• High dynamic and mechanical resilience

• Cost savings in assembly and assembly

• No manual soldering, since connectors and cables are eliminated

• Simple layout design

• Reduced weight

In the rigid area, all commercially available FR4 materials (TG135, TG150, TG180) can be used. In the flexible region, one-sided or double-sided polyimide films are preferably used.

These flex materials differ in polyimide thickness, adhesive systems, and copper overlays.

For copper overlays, a distinction must be made between ED and RA copper.