Made of a kind of laminated material that has insulation to resist heat, electrical properties, metal foil, and adhesive
Usually, conductive bumps allow conductivity between the flexible circuit board and another circuit board by pressing the bumps to pads with pressure. This creates electric flow between the systems
Known for their lightness, thinness, flexibility, and convenience in size.
Advantages:
Tightly assembled electronic packages, where electrical connections are required in 3 axes, such as cameras (static application)
Electrical connections where the assembly is required to flex during its normal use, such as folding cell phones (dynamic application)
Electrical connections between sub-assemblies to replace wire harnesses, which are heavier and bulkier, such as in cars, rockets and satellites
Electrical connections where board thickness or space constraints are driving factors
Applications:
FPCs are often used as connectors in various applications where flexibility, space savings, or production constraints limit the serviceability of rigid circuit boards or hand wiring
In addition to cameras, a common application of flex circuits is in computer keyboard manufacturing; most keyboards made today use flex circuits for the switch matrix
