Standard Flex and Rigid-Flex Materials Stack-Up Guide
Material selection and stack-up design are critical to the performance, reliability, and manufacturability of flex and rigid-flex circuits. This guide from Pioneer Circuits outlines common stack-up configurations, bonding materials, and material designations, serving as a valuable reference for engineers and product designers working in aerospace, defense, and high-reliability industries.
Material Guidance for Smarter Designs
Flex and rigid-flex PCBs require precise layering of copper, polyimide, adhesives, and prepregs to achieve dependable results in extreme environments. This document highlights typical stack-ups across IPC-6013 Types 1 through 4, covering everything from single-layer flex to multi-layer rigid-flex assemblies. It also explains common pitfalls associated with acrylic adhesives and how to mitigate them with non-acrylic or adhesiveless alternatives.
With visuals and practical notes from Pioneer Circuits’ engineering team, this guide helps ensure your design starts with a solid foundation. Whether you’re selecting materials or troubleshooting delamination risks, this resource supports better decisions from concept to production.