Flexible PCB, built to bend and last.
Single, double and multilayer flex on polyimide, built to IPC-6013 for the tightest, most demanding assemblies.
Why choose a flexible PCB over a rigid board and wires?
A flexible printed circuit (FPC) is a pattern of copper traces bonded to a thin polyimide film. It bends, folds and twists to fit contoured or cramped enclosures, so one flex replaces a rigid board plus its connectors and cables.
A dynamic flex circuit, designed with rolled annealed copper and the correct bend radius, survives 500,000 or more bending cycles where a wire harness would fatigue and break. That is why flex is the interconnect of choice for anything that has to be small, light or in constant motion.
A construction for every assembly.
Each one folds, routes and survives differently.
Single-sided flex
The lightest, lowest-cost flex for display cables, sensor tails and jumpers.
Double-sided flex
Plated through holes for denser routing and crossovers on a bendable film.
Multilayer flex
Up to eight layers of high-density interconnect that still folds into place.
Rigid-flex
Rigid zones joined by flex, folding into a 3D assembly with fewer connectors.
Dual-access FPC
Copper reached from both sides of a single-layer flex for both-side contact.
The build envelope.
Typical ranges we run every week. Every order is finalised to your drawing, stack-up and approved sample.
Single, double, multilayer, rigid-flex and dual-access.
Polyimide for most work, LCP for high-frequency, PET for low-cost static.
Rolled annealed for dynamic flex, ED for static.
2 mil advanced, 3 mil standard, for high-density flex.
6x thickness for one or two layers folded once, 12x from three; about 100x for flex that moves. Per IPC-2223.
On a polyimide base, with soldering to 280 °C short-term.
Rigidity under connectors and mounted components.
Built to IPC-6013, designed to IPC-2223.
The detail that decides flex yield.
On fine-pitch designs, a small shift in coverlay alignment can expose an adjacent trace and cause an intermittent short that only shows after the product ships. So we laser-cut coverlay, hold it to ±0.10 mm overall and inspect it before lamination, not at final test.
The second lever is copper against the bend. Rolled annealed copper survives repeated flexing, so for dynamic designs we specify RA over ED, keep the copper on the neutral bend axis, and hold the radius at about 100 times material thickness for parts that bend in service. Both checks are part of the FPC design rules we review on every drawing.
Built from four material choices.
Polyimide base
The flexible dielectric. 1/2 to 5 mil, stable from -40 to 150 °C, with PET as a low-cost option for static designs.
Rolled copper
Rolled annealed copper for dynamic flex life, electro-deposited copper for static designs. 1/2 to 2 oz.
Coverlay
A polyimide coverlay protects the traces where soldermask cannot bend. Held to ±0.10 mm overall on machine lamination.
Stiffeners
PI, FR-4, aluminum or stainless steel, bonded where connectors and components need a rigid backing.
Proven across real programs.
A sample of the flex and assembly work we run, by application. Every build starts from an approved sample and is accepted to IPC-A-610 Class 2 or 3. Our flex circuit applications guide goes deeper into each one.
Camera modules
Separate main, power and sensor boards on flex for compact camera stacks.
LED lighting
Illuminator and LED driver boards where the circuit wraps a housing.
Sensors
Gas, energy and motion sensor boards with fine-pitch flex tails.
Medical devices
Diagnostic and monitoring assemblies in tight, contoured enclosures.
Automotive
ADAS cameras, displays and control electronics under vibration and heat.
Industrial & security
Access, control and instrument boards built for long service life.
Common questions.
What is a flexible PCB?
What is the difference between dynamic and static flex?
What materials are used in flexible PCBs?
What is the minimum bend radius for a flex circuit?
Do you offer flex circuit assembly?
More answers on materials, tolerances and lead time are in the full flexible PCB question list.
Often supplied alongside.
Send your flex drawing or Gerber.
Construction, base thickness, copper type and quantity. We reply with feasibility, a stack-up and an indicative price in two working days.