6-Layer Rigid-Flex PCB

A 6-layer rigid-flex PCB permanently integrates rigid PCB sections and flexible polyimide interconnect regions within one circuit, helping reduce connectors, cables and separate board-to-board interconnections in compact electronic assemblies. Rigid-flex construction is useful where components require rigid mechanical support while other parts of the circuit must bend, fold or route through restricted spaces. Typical engineering considerations include rigid and flex layer structure, flex-zone geometry, bend requirements, transition areas, coverlay, stiffeners and component placement. JETFGO reviews the complete rigid-flex stack-up together with rigid-board construction, flexible layers, polyimide materials, copper structure, blind or laser vias, flex-to-rigid transitions and any controlled bend requirements before confirming manufacturability. Our published capability reference for this solution includes flex capability up to 12 layers, blind / laser vias from 3–5 mil and manufacturing review for IPC Class 2 and Class 3 requirements. Final feasibility depends on the complete stack-up, via structure, flex-zone geometry, materials, copper construction and project-specific reliability requirements. Rigid-flex transition areas require particular attention because copper, dielectric and mechanical structures change between rigid and flexible regions. Bend areas, via locations, plated features and component placement should therefore be defined before production. For engineering review, provide Gerber or ODB++, drill files, proposed rigid-flex stack-up, fabrication drawing, quantity, target delivery date and any bend, flex-zone, via, coverlay, stiffener or IPC-class requirements. Published capability values are provided for initial selection. Final materials, rigid-flex construction, via structure, bend design and manufacturing feasibility are confirmed through project-specific engineering and DFM review.