Plan the manufacturing route
A flex circuit uses flexible dielectric materials to route connections through constrained mechanical spaces. Rigid-flex combines rigid component-bearing regions with flexible interconnect sections. The mechanical use case is part of the electrical design: a one-time installation bend and repeated dynamic motion require different evaluation.
Define the bend environment
Document the bend direction, bend region, minimum radius, motion cycles and temperature conditions. Do not select a universal bend-radius multiplier without reviewing the actual construction and use case.
Coordinate the transition regions
Coverlay openings, stiffeners, adhesive systems and rigid-to-flex transitions affect stress and assembly. Keep component placement and unsupported solder joints clear of intended flex zones.
Support the board during assembly
Flexible circuits may need carriers or fixtures for printing, placement and reflow. Include fiducials, handling areas and the final mechanical drawing when requesting assembly review.
Before you request a quote
- Provide both flat fabrication data and the installed configuration.
- Identify static versus dynamic bend regions.
- Specify stiffener material, thickness and location.
- Review the complete stack-up with the intended manufacturer.
For a build-specific review, provide the actual revision, quantity and delivery requirement. Manufacturing limits, applicable certifications and lead time must be confirmed in the written quotation.