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 your local DING Group company if you need further information or assistance, we are happy to help you.

Semi-Flex PCBs – Technical specification

Feature DING´s technical specifcation
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
Maxmimum 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