However, rigid-flex PCBs typically require more internal layers and a broader structure. You can place components directly on the flex ribbon for high-pin density designs. There are two types of flex elements: static flex elements and dynamic creased flex elements. A rigid-flex PCB’s enclosure must match the board’s mechanical shape. Unlike traditional PCBs, rigid-flex PCBs require flexible enclosures to support the rigid-flex PCB. EnclosureĪnother essential factor to consider when designing rigid-flex PCBs is the enclosures. You can also add dummy traces to strengthen the bend area if necessary. It’s also essential to ensure traces are routed perpendicular to the bend line. We can circulate the bend radius by measuring the allowed deformation of copper conductors. When designing a rigid-flex Altium PCB, it’s essential to consider the bending radius of the flex circuits. This way, you won’t have to worry about the PCB becoming unstable.

First, you’ll need to ensure that the layers of your rigid-flex PCB are correctly stacked. The Fold State slider will help you visualize your design and make necessary adjustments. You can also view your rigid-flex PCB in the folded state. If you’re unsure how to use the Bending Lines feature, Altium includes a powerful 3D rendering engine. If you’re concerned about the limitations of adhesives, you can use pressure-sensitive adhesives. Luckily, other options for adhesives are compatible with flex PCBs. They are also susceptible to moisture out-gassing and resin recession.

Acrylic adhesives have the highest thermal expansion coefficient and introduce the most manufacturing challenges. When designing a rigid-flex Altium PCB, it is essential to understand the limitations of adhesives.

Altium rigid flex