In simple words, a Rigid-Flex PCB is a combination of two types of PCBs: Rigid PCB and Flexible PCB. A rigid PCB is hard and has an unbending base. Sometimes, we need such a PCB, but sometimes, we need PCBs to bend. On the other hand, flexible PCBs can adjust in any shape, so they can easily work in smaller spaces and bend without compromising performance. However, in most cases, we need the combination for both rigid and flexible PCBs, and this combination is found in Rigid-Flex PCBs.

Rigid-Flex PCBs have the benefits of both worlds, and not only that, but they are also cost-effective and more reliable as compared to Rigid PCBs. These PCBs have a higher component density, fewer parts requirements, long life, and exceptional quality control.

Because of its flexible and rigid nature, the PCB can be used in any type of device and modern era electrical appliances. These are compact and lightweight, which ultimately reduces the size and weight of the final product.