Semi-Flex PCBs
Semi-flex PCBs use specialized FR-4 materials and a specific manufacturing method to create a flex-to-install design that can provide an economical solution for certain applications.
Please contact Maxwell Circuits if you need further information or assistance, we are happy to help you.
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6L Semi-Flex - technical specification: IPC-4101C/99; materials: EMC-EM-825; surface treatment: Immersion ENIG; board thickness: 1.5 mm +/0.2mm; application: automotive/industrial
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Semi-Flex PCBs – Technical specification
| Feature | Maxwell Circuits´ technical specification |
| Number of layers | 1 – 12 layers, with 1 – 2 conductive layers in bending area. |
| Technology highlights | The process uses controlled depth routing of the FR-4 to achieve a flexible / bending section within a traditionally rigid FR-4.Only suitable for static operations – bends typically just for installation.A lower cost solution for some very specific “flex-to-fit” applications. |
| Bending performance | 50 x bend cycles of 0° – 90° – 0° |
| Bend features | 5mm radius / max bending angle 90° |
| Materials | Specialized FR-4 for static flex applications |
| Copper weights (finished) | 35μm |
| Minimum track and gap | 0.075mm / 0.075mm |
| PCB thickness | 1.00mm – 2.00mm |
| PCB thickness in flex section | 0.25mm ± 0.05mm |
| Maximum dimensions | 538mm x 610mm |
| Surface finishes available | HASL (Sn/Pb), LF HASL (SnNiCu), OSP, ENIG, Immersion tin, Immersion silver, Electrolytic gold, Gold fingers |
| Minimum mechanical drill | 0.20mm |
