Rigid Flex circuits are characterized by having conductors on both the flexible and rigid layers of the circuit. Plated through-holes extend between the flexible and rigid sections and electrically connect multiple conductor layers. This circuit construction is known as a Type 4 circuit as defined by IPC 6013 and should be distinguished from a flexible circuit with a rigid stiffener attached.
When to use Rigid Flex
- If high density is required
- Dual sided components are necessary
- When controlled impedance is required
Rigid Flex Features
- Up to 8 layers
- Three dimensional capabilities create optimal solutions, especially when extreme space limitations exist
- Assembly in final product is easier in comparison with flex boards
- Maximizes space by reducing the need for interconnects between individual rigid boards
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