TYPE IV: Rigid-Flex
Three or more conductor layers separated by laminated dielectric, usually with plated through-holes (PTH) vias. A versatile combination of both rigid and flexible technology to provide complete three dimensional capabilities for both commercial and military applications.
Benefits of Rigid, Flexible, Printed Circuits:
- Combines true rigid board with a flexible circuit
- Allows for placement of fine-pitch components and small components
- Meets double-sided assembly requirements
Rigid-Flex printed circuits traditionally consist of multiple layers of both rigid and flexible substrates laminated together into a single cohesive construction, electrically interconnected by means of plated through holes.
Very prominent in the design of military hardware in the past, rigid-flex has recently gained a high degree of acceptance in commercial avionics and automotive markets as well.
Rigid-flex typically provides a rigid board in the component mounting area and a wide range of flexure in the bend areas for ease of installation.
Hybrid flex/cables incorporate single or multiple combinations of Types I-5 Flexible Printed Circuits (FPC) with single or multiple laminated Flat Flexible Cables (FFC) and/or rigid boards creating a cost-effective solution to many price point sensitive interconnect needs. Parallel conductor runs are manufactured from FFC. Variable pattern conductors at the termination ends are constructed from either a flexible printed circuit or a traditional rigid board.