IPC 6013, MIL-P-50884 - Type 4

Two or more conductive layers with either flexible or rigid insulation material as insulators between each one; outer layers may have covers or exposed pads.

Rigid-flex has conductors on the rigid layers, which differentiates it from multilayer circuits with stiffeners. Plated through-holes extend through both rigid and flexible layers (with the exception of blind and buried vias). Rigid-flex costs more than a standard circuit with stiffeners.

Access holes or exposed pads without covers may be on either or both sides. Vias or interconnects can be fully covered for maximum insulation. Stiffeners, pins, connectors, components, heat sinks, and mounting brackets are optional.

We also manufacture “flush” rigid-flex, where the top surface of contact areas is level with adjacent adhesive/insulation.

Minco is capable of sequentially laminating, drilling, and plating circuits, which allows for more flexibility in designing the circuit.