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.
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Semi-Flex PCBs – 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, Gold fingers|
|Minimum mechanical drill||0.20mm|