Semi-Flex PCBs



6L Semi-Flex – general description: 3 layer flex PCB; technical specification: IPC-4101C Slash Sheet 99; materials: EMC-EM-825; surface treatment: Immersion ENIG; board thickness: 1.5 mm +/0.2mm; application: automotive/industrial

FeatureTechnical Specification
Number of layers 1 – 4 layers, with 1 – 2 conductive layers in bending area.
Technology highlightsThe 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 performance50 x bend cycles of 0° – 90° – 0°
Bend features5mm radius / max bending angle 90°
MaterialsSpecialized FR-4 for static flex applications
Copper weights (finished)35um
Minimum track and gaps0.075mm / 0.075mm
PCB thickness1.00mm – 2.00mm
PCB thickness in flex section0.25mm ± 0.05mm
Maximum dimensions 538mm x 610mm
Surface finishes availableHASL (SnPb), LF HASL (SnNiCu), OSP, ENIG, Immersion tin, Immersion silver, Electrolytic gold, Gold fingers
Minimum mechanical drill0.20mm