Semi-Flex PCBs
Semi-Flex PCBs belong to the 3D printed circuit board product group. The semiflexible design also offers significant cost advantages over classic rigid-flex PCBs.
These boards are also ideally suited for static bending stress during assembly and installation.
Other advantages include increased reliability due to the elimination of fragile connectors, cost savings and minimisation of errors through the replacement of plug and soldered connections as well as reduced assembly and testing effort.
| Feature | Sourceman’s 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 (SnPb), LF HASL (SnNiCu), OSP, ENIG, Immersion tin, Immersion silver, Electrolytic gold, Gold fingers |
| Minimum mechanical drill | 0.20mm |
