Flexible PCB — Custom Flex Circuits
Flexible printed circuits let your product bend, fold and fit where rigid boards cannot. P&A International engineers, prototypes and delivers custom flex PCBs — single/double-sided, multilayer, rigid-flex and flex with stiffeners — to your spec.
As an engineering-led contract manufacturer founded as an engineering consultancy, we assign one dedicated engineer to your project from DFM and stackup review to qualified samples in 10–15 working days, then scale into volume through our vetted partner-factory network, where every supplier is ISO 9000 certified or better.
consultancy + manufacture
per project, end-to-end
qualified samples with test data
every supplier certified or better
Class 2 or 3 as specified
Flexible circuits we make
Single & double-sided flex
Lightweight interconnects that fold into tight enclosures — ideal for replacing wires and connectors.
Multilayer & rigid-flex
Rigid sections joined by flexible layers — eliminating cables and connectors for higher reliability.
Flex with stiffeners & LED flex
Selective stiffeners where connectors mount, plus LED flex with managed heat dissipation.
Flex circuit assembly (FPCA)
Populated flex assemblies — component placement, connectors and test — ready to integrate.
Need the rigid boards or assemblies too? We also build rigid PCBs and PCB assembly through the same engineering team and partner network.
Engineering capability
- Flex & rigid-flex stackup design — layer count, coverlay, adhesive and impedance targets
- Base-material selection (polyimide, adhesiveless laminate) for fine-line and dynamic flex
- Bend-radius and dynamic-flex-life engineering; trace routing and layer staggering
- Controlled-impedance design and verification
- Stiffener, coverlay, EMI shielding and surface-finish (ENIG, immersion tin, OSP) selection
- Build to IPC-6013 (flex) and IPC-2223 design, Class 2 or 3, UL as specified
- Flex circuit assembly (FPCA) — placement, connectors and test
- DFM review and qualified samples with full test data before any volume tooling
At a glance
| Types | Single / double-sided / multilayer flex / rigid-flex / FPCA |
| Layers | 1 to multilayer; rigid-flex hybrids |
| Base material | Polyimide (PI), adhesiveless laminates; coverlay |
| Features | Controlled impedance, stiffeners, EMI shielding, gold fingers |
| Standards | IPC-6013 Class 2/3; IPC-2223 design; UL as specified |
| Prototype | 10–15 working days to qualified samples |
| Quantities | One-off prototypes to high volume |
| Quality | Every supplier in our network is ISO 9000 certified or better |
Why engineers & buyers choose PA
For design engineers
A true design partner — one dedicated engineer, flex and rigid-flex stackup design, controlled impedance, bend-radius and dynamic-flex engineering, and DFM that catches reliability risks before tooling.
For purchasing
Low-risk scalability — predictable 10–15-day prototypes, flexible MOQ from one-off to production, target-cost DFM, a single point of contact, and a vetted ISO 9000+ partner network managed end-to-end by P&A.
3 easy steps to get started
Send us your files
Send your Gerber/DXF, layer count, bend radius and spec. One dedicated engineer reviews it and confirms the stackup with you.
Proposed stackup & quote
You receive a proposed stackup and indicative pricing — typically within 48 hours — to review and refine together.
Samples & production
Qualified samples with full test data in 10–15 working days; on approval we scale into volume through our partner network.
Applications
Wearables & consumer electronics · medical & diagnostic devices · industrial sensors & instrumentation · automotive & e-mobility · LED lighting · cameras & imaging · aerospace and defence.
See our main flexible PCB page, plus electronics contract manufacturing, custom power supplies and wiring harness & cable assembly.
Choosing the right flexible PCB
Getting the flex design right early avoids costly re-spins. A few decisions shape every flex build:
| Flex type first | Single/double-sided for simple interconnects; multilayer for density; rigid-flex to remove connectors and cables; add stiffeners where connectors mount. |
| Bend radius & flex life | Static bends ≥ 6× total thickness, dynamic bends ≥ 20×. Tell us the bend radius and, if dynamic, the flex-cycle count. |
| Material & copper | Polyimide thickness, copper weight and adhesiveless laminate set fine-line capability and dynamic-flex reliability. |
| Impedance | Give us your target impedance and tolerance — we set trace width, spacing and stackup and confirm with a controlled-impedance build. |
| Class & compliance | IPC-6013 Class 2 for general products, Class 3 for high-reliability (medical, aerospace, automotive); UL where required. |
What to send us for a fast, accurate quote
The more of this you can share, the quicker we can return a proposed stackup and price:
- Gerber and/or DXF, with board outline, bend lines and bend radius
- Flex type, layer count and stackup (or ask us to propose one)
- Base material, copper weight and any controlled-impedance target
- Static or dynamic flex — and the number of flex cycles if dynamic
- Coverlay vs solder mask, stiffener locations, EMI shielding and surface finish
- IPC class and any UL or industry compliance requirement
- Assembly (FPCA)? Include the BOM and test requirement
- Target cost, prototype quantity, and annual volume or call-off pattern
Working from a sample or a competitor part is fine — our engineer will reverse-engineer it or design a drop-in equivalent to your specification.
Get a quote
Send your Gerber/DXF, layer count and bend radius and one dedicated engineer will reply — typically within 48 hours — with a proposed stackup and indicative pricing.
One dedicated engineer reviews every enquiry and replies with a proposed stackup and indicative pricing. Your details are used only to respond to your enquiry. Prefer email? support@pa-international.com.au