Double Sided Flex PCBs
Double sided flexible circuit consists of double-sided copper clad material with top and bottom cover films (PI or Green/Yellow Oil, Carbon Ink, etc)
Two conductive layers with an insulating layer between; outer layers may have covers or exposed pads.
The cover films are pre-routed to access copper from both sides using plated thru holes (PTH).
Access holes or exposed pads without covers may be on either or both sides; vias can be covered on both sides.
Sincerely Plantautomation Technology
Regards,
Client Success Team (CRM),
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