{"id":8,"date":"2026-08-31T18:01:58","date_gmt":"2026-08-31T10:01:58","guid":{"rendered":"http:\/\/wh-nu7wehbv22kcbyp04h6.my3w.com\/?post_type=eb_product&p=8"},"modified":"2026-09-04T09:53:02","modified_gmt":"2026-09-04T01:53:02","slug":"pcb-rigid-flex","status":"publish","type":"page","link":"https:\/\/www.ebestpcba.com\/index.php\/pcb-rigid-flex\/","title":{"rendered":"Rigid-Flex PCB Manufacturer"},"content":{"rendered":"\n
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Home<\/a> \/ Capabilities<\/a> \/ Rigid-Flex PCB<\/div>\r\n
Rigid-flex manufacturing capability<\/div>\r\n

Rigid-Flex PCB Manufacturing<\/h1>\r\n

Combine rigid component areas and flexible interconnects in a single PCB. EBest PCBA reviews the stack-up, transition geometry, bend requirements, HDI features, impedance requirements, and assembly needs before quotation.<\/p>\r\n

Send Rigid-Flex Files & Stack-Up<\/a>Request NDA First<\/a><\/div>\r\n

Response within 12 hours \u00b7 Final manufacturing requirements, test plan, and delivery schedule confirmed after file review<\/p>\r\n<\/div>\r\n

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Rigid-flex PCB construction with rigid and flexible sections.<\/figcaption>\r\n<\/figure>\r\n<\/div>\r\n<\/section>\r\n
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Standard Range<\/em>2\u201310 layers<\/b>Reviewed based on rigid-flex manufacturing requirements.<\/span><\/div>\r\n
Special Review Range<\/em>11\u201320 layers<\/b>Requires review of the complete stack-up, materials, registration, and via structure.<\/span><\/div>\r\n
Finished thickness<\/em>0.3\u20133.0 mm<\/b>Final tolerance follows the approved construction and thickness band.<\/span><\/div>\r\n
Impedance reference<\/em>\u00b110%<\/b>Trace geometry, test coupon, and test method are confirmed for each project.<\/span><\/div>\r\n<\/div>\r\n<\/section>\r\n
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Project fit<\/div>\r\n

Use Rigid-Flex When Space, Reliability and Assembly Must Be Solved Together<\/h2>\r\n

Rigid-flex PCBs are useful when separate boards, cables, or connectors take up too much space or add assembly complexity. The rigid and flex sections should be reviewed together before fabrication.<\/p>\r\n

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\"Representative
Multi-zone rigid-flex PCB architecture for compact electronic assemblies.<\/figcaption><\/figure>\r\n
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01<\/span>

Rigid islands in one build<\/h3>

Connect component areas without using separate PCBs and cables for each section.<\/p><\/article>\r\n

02<\/span>

Defined bend and fold zones<\/h3>

Confirm bend radius, fold direction, trace direction, and mechanical keep-outs before fabrication.<\/p><\/article>\r\n

03<\/span>

Reduced connector risk<\/h3>

Replace selected cables and connectors with integrated flex interconnects where the product design allows.<\/p><\/article>\r\n

04<\/span>

PCB and PCBA handoff<\/h3>

Review carriers, connectors, component keep-outs, and flex handling before PCBA assembly.<\/p><\/article>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/section>\r\n

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Capability boundary<\/div>\r\n

Confirm Rigid-Flex Capability From Your Files<\/h2>\r\n

Final capability depends on the complete combination of layer count, flex-layer position, copper, transition geometry, materials, surface finish, impedance, and assembly handling<\/p>\r\n

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Capability item<\/th>Standard Range<\/th>Special Review<\/th><\/tr><\/thead>\r\n
Layer count<\/td>2\u201310 layers for supported rigid-flex constructions<\/td>11\u201320 layers; stack-up, registration, via structure, and materials must be confirmed from the project files<\/td><\/tr>\r\n
Flex-layer position<\/td>Outer-layer or middle-layer flex constructions<\/td>Final position follows assembly, bend, copper and lamination requirements<\/td><\/tr>\r\n
Finished thickness<\/td>0.3-3.0 mm<\/td>Tolerance and handling requirements are confirmed from the final stack-up.<\/td><\/tr>\r\n
Minimum flex width<\/td>2.0 mm<\/td>Narrow or mechanically constrained regions require strain and process review<\/td><\/tr>\r\n
Inner line \/ space<\/td>3 \/ 3 mil at 18 um finished copper reference<\/td>Finer geometry or different copper thicknesses require additional manufacturability review.<\/td><\/tr>\r\n
HDI structure<\/td>1+n+1 reference<\/td>Higher-order HDI, special via combinations and any-layer structures require review<\/td><\/tr>\r\n
Impedance<\/td>\u00b110% reference<\/td>Rigid and flex stack-ups, test coupons, and measurement methods are confirmed for each project.<\/td><\/tr>\r\n
Surface finish<\/td>ENIG, plated gold, OSP and tin routes<\/td>ENEPIG and connector-specific plating require feature and material assessment<\/td><\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n
Capability note:<\/b> published values are reference ranges. Final capability is confirmed after review of the complete rigid-flex data package.<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/section>\r\n
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Architecture choices<\/div>\r\n

Choose the Rigid-Flex Structure Based on the Final Product<\/h2>\r\n

Rigid-flex construction should be selected based on how the product will be installed, folded, assembled, and tested. More complex structures may need additional engineering review.<\/p>\r\n

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\"Representative
Panelized rigid-flex PCB prepared for assembly.<\/figcaption><\/figure>\r\n
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01<\/span>

Two rigid zones with one flex link<\/h3>

A direct architecture for connecting separated mounting areas through a defined folding or routing path.<\/p><\/div><\/article>\r\n

02<\/span>

Multiple rigid islands<\/h3>

Integrates several functional zones where component density and enclosure geometry require distributed rigid areas.<\/p><\/div><\/article>\r\n

03<\/span>

Outer or middle flex layers<\/h3>

Flex-layer position is selected based on protection, assembly access, copper geometry, and lamination requirements.<\/p><\/div><\/article>\r\n

04<\/span>

HDI rigid-flex construction<\/h3>

Microvia and build-up options are evaluated with registration, resin, copper and transition-zone constraints.<\/p><\/div><\/article>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/section>\r\n

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\"Polyimide
Polyimide, copper-clad and bonding materials used in rigid-flex PCB construction.<\/figcaption><\/figure>\r\n
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Material system<\/div>\r\n

Rigid and Flex Materials Must Be Designed as One Stack-Up<\/h2>\r\n

Material selection affects thickness, registration, resin flow, bend performance, and dimensional stability. The quotation should identify the actual material system instead of only stating \u2018FR4 plus flex.\u2019<\/p>\r\n

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Rigid laminate<\/b>

FR4 and selected special rigid materials are reviewed against thermal, electrical and thickness requirements.<\/p><\/article>\r\n

PI and copper<\/b>

Adhesive or adhesiveless polyimide cores and copper options are selected for the flexible regions.<\/p><\/article>\r\n

Low-flow bonding<\/b>

Low-flow prepreg or adhesive must limit resin movement around rigid-flex transitions and openings.<\/p><\/article>\r\n

Coverlay and support<\/b>

Coverlay, PI support, local reinforcement and pressure-sensitive adhesive are coordinated with assembly.<\/p><\/article>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/section>\r\n

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Transition-zone control<\/div>\r\n

Most Rigid-Flex Risk Concentrates at the Boundary<\/h2>\r\n

The transition zone carries mechanical strain between rigid and flexible materials. Routing, holes, resin flow, coverlay, and geometry should be checked before fabrication.<\/p>\r\n