Rigid-flex printed circuit board assemblies (PCBAs) combine the best of both worlds: the structural stability of rigid boards and the adaptability of flexible circuits. These hybrid assemblies are critical in industries like aerospace, medical devices, and consumer electronics, where space constraints and reliability are paramount. However, reworking rigid-flex PCBAs—whether to repair defects, replace components, or modify designs—can be a nerve-wracking process. The delicate nature of these assemblies, combined with their complex construction, makes rework a technical challenge that demands precision, expertise, and specialized tools. In this blog, we’ll dive into the intricacies of reworking rigid-flex PCBAs, exploring the technical hurdles, best practices, and strategies to mitigate risks. Understanding Rigid-Flex PCBAs Before we tackle rework, let’s clarify what makes rigid-flex PCBAs unique. A rigid-flex PCBA integrates rigid and flexible substrates into a single assembly. The rigid sections, typically made of FR4 or similar materials, house components and provide mechanical support. The