Define the project
Rigid-flex construction combines rigid board regions with flexible interconnections. It can reduce connectors and support compact packaging, but it requires a clearly defined stackup, transition geometry and assembly sequence. Specify which layers continue through each region.
Requirements to include
- Region-by-region stackup and layer transitions
- Bend zones and final installed shape
- Coverlay, adhesive and stiffener details
- Rigid-to-flex transition requirements
- Assembly fixtures, handling and test access
Decisions to resolve before release
Confirm mechanical clearances in the folded configuration, not only in the flat drawing. Coordinate fabrication and assembly reviews so supporting fixtures, component placement and final inspection can be planned. Qualification should reflect the actual bending and environmental requirements.
Request a project-specific quote
Send the design revision, quantity and required date with the technical requirements above. Identify anything still under review. Feasibility, process details, inspection scope and delivery are confirmed against the actual files; a general service description is not a production approval.
Choose rigid-flex for the actual interconnect problem
A rigid-flex PCB integrates rigid and flexible regions in one construction. Compare it with separate rigid boards connected by cables and with a flex circuit that uses local stiffeners. These options differ in assembly, connector count, mechanical behavior, repairability and manufacturing complexity.
Describe the rigid regions, flexible layer spans and where each material begins or ends. Overall copper layer count alone does not communicate the construction: identify which conductive layers continue through each flexible region. Include installation geometry and any dynamic movement requirements.
Resolve the rigid-to-flex transition early
Review the transition geometry, copper routing, coverlay interfaces, holes, component placement and mechanical support. Avoid treating the rigid-to-flex boundary as an arbitrary bend line. The manufacturer needs to evaluate the stackup and process sequence together with the mechanical design.
More complex layer transitions or additional lamination operations can change cost, yield risk and schedule. Confirm the proposed build, required qualification evidence and first-article acceptance before committing the layout. Provide the flat manufacturing drawing, installed configuration and assembly handling requirements in the same revision package.