Reduced Space and Weight:
Most of the advantages associated with flexible PCBs come from their low volume and weight. In fact, using a flexible PCB instead of a rigid PCB can result in a space reduction of over 50 percent and a weight reduction of 95 percent, while simultaneously maintaining the function and reliability of the circuit.

Durability:
The flexibility, reduced weight and reduced number of interconnects in the PCB allows them to handle changing external forces and improve their resistance to shock and vibration.

Signal Integrity:
Flexible PCBs work in a wide range of environments, so signals will continue to perform smoothly despite exterior conditions. This improves the PCB’s signal reliability.

Higher Density:
The thin flex layers and smaller parts mean that flexible PCBs are capable of supporting higher circuit densities.

Minimized Errors:
Due to the elimination of mechanical connectors and reduced variations in assembly methods, flexible PCBs experience reduced wiring errors.

Low Cost:
Because of the fewer assembly steps involved in the creation of flexible PCBs, they tend to be relatively low-cost.

Heat Dissipation:
The thinner flex PCB materials allow for a greater surface-area-to-volume ratio, improving heat dissipation.