What is a Double-Sided Flexible PCB?

A flexible PCB (also called a flexible printed circuit or FPC) is a type of printed circuit board made from bendable materials. These materials can be adhesive or non-adhesive.

The copper used to make FPCs comes in two main types: electrolytic copper and rolled copper. Rolled copper, especially the non-stick kind, is more flexible and easier to fold.

A double-sided (or double-layer) flexible PCB has two layers of conductive copper, separated by an insulating layer in the middle. This design makes double-sided FPCs an ideal solution for applications needing higher circuit density.

Here is Double sided Flex PCB Stack up

Where are Double-Sided Flex PCBs Used?

Double-sided flex PCBs are widely used because they work so well in many areas, including:

• Communications (phones, networking gear)
• Consumer Electronics (cameras, wearables, laptops)
• Automotive (sensors, displays, controls)
• Medical (monitors, imaging devices, implants)
• Industrial (robotics, machinery controls)
• Aerospace (avionics, satellites)
• Military (radar, communication systems)
• Transportation (train/vehicle controls, navigation)