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Rigid-flex PCB fabrication
TECHNOLOGY / PCBELEC
# Rigid-flex PCB fabrication
Rigid-flex boards integrate rigid sections with flexible interconnections. Fabrication requires a clear definition of each region and how the layer structure transitions between them.
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## Manufacturing overview
Rigid-flex boards integrate rigid sections with flexible interconnections. Fabrication requires a clear definition of each region and how the layer structure transitions between them.
## Describe the rigid and flexible regions
Supply the stackup for each region, the rigid outline, flex outline and bend areas. Identify local reinforcement and any mechanical constraints affecting the finished assembly.
## Review the integrated construction
Via locations, layer spans and materials should be evaluated across the whole structure. Include electrical requirements and the inspection records needed for the released build.
## Map the rigid and flexible regions
A rigid-flex board combines rigid sections with flexible interconnections. Specify the layer construction separately by region: a single total layer number does not describe how each area is built. The transition between rigid and flexible areas, the installed geometry and local thicknesses must be reviewed together.
| Region | Information for review |
| --- | --- |
| Rigid sections | Layer count, laminate, holes and component-side constraints. |
| Flexible sections | Flexible layers, copper, coverlay and bend conditions. |
| Transitions | Boundary locations and local mechanical requirements. |
| Final assembly | Fold direction, installed shape, stiffeners and clearances. |
## What to include in your quotation request
Provide the fabrication package and drawing at one revision. Distinguish fixed requirements from items open to engineering proposals. Include quantity and the required ship or arrival date; the material, construction and verification scope must be reviewed before the delivery plan is confirmed.
Fabrication artwork, drill data and mechanical outline.
Stackup, material grades and finished copper requirements.
Surface finish, critical tolerances and special features.
Required inspection, test conditions and documentation.
Quantity, project stage, destination and date requirement.
Questions, answered
## Before your next build
What should I include in the quotation package?
Send fabrication and drill data, a drawing, stackup or construction details, quantity, material and finish requirements, and the required ship or arrival date.
Is rigid-flex the same as a flex circuit with a stiffener?
No. A stiffener reinforces a flex circuit locally; a rigid-flex construction integrates rigid and flexible circuit regions. Send the region-specific stackup for review.
CONTINUE YOUR REVIEW
## Related manufacturing resources
capabilities
### [PCB manufacturing capabilities ↗](https://www.chinasuqi.com/en/capabilities/)
Review PCB construction, materials, copper, drilling, surface finish and verification requirements before submitting a manufacturing quotation.
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### [PCB materials and stackup requirements ↗](https://www.chinasuqi.com/en/materials/)
Explore FR-4, high-Tg, polyimide, high-frequency and metal-based PCB material categories and prepare a clear material specification.
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### [Bare PCB testing and inspection ↗](https://www.chinasuqi.com/en/quality/testing/)
Explore electrical testing, flying probe, impedance checks, microsection analysis and visual or dimensional inspection for bare PCB orders.
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### [PCB manufacturing file checklist ↗](https://www.chinasuqi.com/en/resources/file-preparation/)
Check Gerber, drill, stackup and fabrication drawings, then add material, copper, finish, quantity and delivery requirements for a PCB quote.
YOUR NEXT PCB PROJECT
## Let’s define your next build.
Start with your files, requirements and target date.
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