Also referred to as flex ultra-thin PCB, this is a type of extra-thin PCB manufactured using flexible laminates.

This allows folding of the PCB, which reduces the volume and surface area required to house the board, hence increasing the integration density.

Moreover, extra-thin PCB equally facilitates better bending.

This implies that it is practical bend the circuit board through smaller bend radii, making it possible to attain even tinnier volumes.

One of the main applications of ultra-thin flexible PCB due to their advanced bending capability is manufacture of cables requiring dynamic bending.