Flexible PCB

Polyimide circuits that bend and fold to fit tight spaces and replace cables and connectors.

A circuit that folds into the product.

A flexible circuit is built on thin polyimide film instead of rigid glass-epoxy laminate. It can be folded into a housing, wrapped around a mechanism or flexed repeatedly in use, and it often replaces a wiring harness and its connectors with a single part that is lighter and has fewer joints that can fail.

We supply flexible circuits on polyimide materials such as DuPont Pyralux, built to IPC Class 2 or Class 3. The construction is confirmed with you before production, because the right build depends on how the circuit bends in your product.

When to choose it

The circuit has to fold into a tight or irregular housing.
A moving part needs a connection that flexes in use.
Weight and thickness matter.
Cables and connectors are a reliability or assembly-cost problem.

Key figures

Base material	Polyimide, for example DuPont Pyralux AP and LF
Standard	IPC-6013
Surface finishes	ENIG, chemical tin, hard gold
IPC performance class	Class 2 / Class 3

Design notes

State whether the bend is a one-time fold at installation or repeated flexing in use. It decides the copper type and the layer construction.
Keep vias, pads and components out of bend areas, and route tracks at right angles to the bend line.
Mark stiffener areas on the drawing where connectors or components need support.

What we need to quote

Your production files (Gerber and drill data) with a fabrication drawing or readme that states board thickness, surface finish and copper weights.

For flexible circuits, include a drawing that shows bend areas and stiffener positions.

For assembly on the same order, add the BOM, assembly drawing and pick-and-place file.

Other board types

Multilayer PCB HDI PCB Rigid-Flex PCB RF & High-Frequency PCB Heavy Copper PCB Double-Sided PCB

Have a build in mind?

Upload your Gerbers and BOM for a fast, no-obligation quote. Need an NDA first? You can ask for one on the quote form.