, in just what will certainly be the initial of lots of rigid flex PCB ideas, we will certainly be reviewing optimum rigid flex PCB stackups and materials. One of our clients recently sent us a 6 layers stackup that needed a little tweaking. It’s outstanding just how a few modifications to your rigid flex PCB stackup design could make certain longevity and manufacturability on your rigid flex board.We talked it over with our designers and developed solutions and alternatives to all of the concerns

The Board:
– This was a six-layer rigid flex PCB with adapters calling for impedance control.
– The high-speed ports connected finger areas from the edge to the top side of the PCB board.

The Concerns:
– The board’s flex PCB layers were found on the outside of the stackup, which enhanced the possibility of manufacturing troubles
– Making sure the board met the impedance demands.

The Remedy:
When the flex layers are on the outdoors, panels are more difficult to deal with and more challenging to process. This made the board more sturdy and much easier to manufacture. It also allowed for much better impedance and better control around the flex finger location.
We embedded the flex PCBlayers in the center of the stackup. This safeguarded the layers throughout the PCB manufacturing process and ensured that the less-durable flex layers were not subjected to outer-layer plating. This is how most rigid flex PCB stackups are made.

Because the flex layer is a separate process, putting the flex layers inside enables flex PCB manufacturers the ability to etch far from the design while safeguarding the flex layers. The material used also played a huge component in making this rigid flex PCB instead of flex. Rigid PCB material was utilized, permitting better impedance and reliability. It was a better option than the original FR-4 material.

Putting the rigid PCB material on the outside likewise enables us to produce exactly what is basically a rigid panel. The flex PCB layers are also safeguarded by our surface area plating since it needs to weak the material.

iFastPCB rigid flex PCB manufacturing processes are as adhering to: first to process the flexible layer as a two layers flex PCB. Then to laminate the flex layers in between the rigid PCB layers. The ending action is milling the cover layers so the flex section becomes viewable.