Data as of Aug 25, 2026 · Based on 277 AI responses from ChatGPT Search and Google AI Mode · See how Parse measures this
If you need aerospace/medical grade or high‑reliability rigid‑flex work, choose 
Named in 57% of answers
Named in 44% of answers
Best for aerospace/medical rigid‑flex: offers fine‑pitch placement, controlled impedance, stiffener integration and quality systems—tradeoff is likely higher cost versus basic prototyping vendors.
Named in 42% of answers
Named in 39% of answers
Source | Citation share |
|---|---|
Rigid-flex and Flex PCB Assembly - Flexible Circuit Assembly - FlexPCB.comhttps://flexpcb.com/assembly | 5.6% |
 Flex and Rigid Flex PCB | Flexible Circuit Boards Manufacturer USA.https://rushpcb.com/flex-rigid-flex/ | 3.8% |
Flex & Rigid-Flex PCB Assembly | Advanced Flexible PCBA | Foxtronics EMShttps://foxtronicsems.com/advanced-pcbas/flex-rigid-flex-pcbas/ | 3.6% |
 High-Quality Rigid-Flex PCB Manufacturer | Flex Circuit Boardshttps://www.asc-i.com/products/flexrigid-flex | 3.3% |
 PCB Manufacturing & Assembly in USA | Blind Buried Circuitshttps://blindburiedcircuits.com/ | 2.7% |
 Flexible PCBs and Rigid-Flex PCBs - Sierra Circuitshttps://www.protoexpress.com/products/flex-and-rigid-flex-pcb/ | 2.3% |
 PCB Assembly Services & Capabilities | Cirexxhttps://www.cirexx.com/pcb-assembly/ | 2.2% |
 Flexible Printed Circuit Boardhttps://www.technotronix.us/flexible-circuit-boards.html | 2.2% |
 Rigid Flex PCB Manufacturer | Supplier & Assembly Serviceshttps://www.wellpcb.com/pcb-manufacturer/assembly/rigid-flex/ | 1.8% |
 Flex PCB & Rigid Flex PCB Manufacturerhttps://www.ttm.com/en/solutions/printed-circuit-boards/flex-rigid-flex-pcb | 1.8% |
Finding the right manufacturing partner for rigid-flex boards is critical because the transition zones, material stack-ups (like polyimide and adhesiveless copper), and fine-pitch assembly require specialized equipment and process controls compared to standard rigid FR4 boards. Depending on whether you need quick-turn…
Finding the right manufacturing partner for rigid-flex boards is critical because the transition zones, material stack-ups (like polyimide and adhesiveless copper), and fine-pitch assembly require specialized equipment and process controls compared to standard rigid FR4 boards.
Depending on whether you need quick-turn prototyping in the U.S. or high-volume scaling, several prominent assembly houses have dedicated expertise in rigid-flex technology:
To help narrow down the best fit, could you share:
If you need a PCB assembly house that **really understands rigid-flex**, I would prioritize companies that handle flex materials, stiffeners, controlled bending, low-stress assembly processes, and inspection/testing—not just a standard SMT house that “accepts” rigid-flex boards. Here are several candidates to…
If you need a PCB assembly house that really understands rigid-flex, I would prioritize companies that handle flex materials, stiffeners, controlled bending, low-stress assembly processes, and inspection/testing—not just a standard SMT house that “accepts” rigid-flex boards.
Here are several candidates to evaluate:
For rigid-flex specifically, ask each vendor:
If you tell me:
I can narrow this to the best 3–5 suppliers.
When looking for a PCB assembly (PCBA) house that handles rigid-flex boards, you need a partner with specialized fabrication and assembly capabilities (such as precise layer stacking, adhesive curing, and tight-tolerance component placement near the rigid-flex transition…
When looking for a PCB assembly (PCBA) house that handles rigid-flex boards, you need a partner with specialized fabrication and assembly capabilities (such as precise layer stacking, adhesive curing, and tight-tolerance component placement near the rigid-flex transition zones).
Several top-tier manufacturers and EMS providers offer seamless rigid-flex fabrication and assembly:
To help narrow down the best fit, could you share:
- **Circuits Unlimited Inc** - 24418 Main St #406, Carson, CA 90745, United States - **Fineline Circuits & Technology** - 594 Apollo St, Brea, CA 92821, United States - **SIERRA ASSEMBLY TECHNOLOGY LLC** - 14764 Yorba Ct, Chino, CA 91710, United States
Yes. Since you’re in Southern California, there are several rigid-flex specialists nearby, and I’d prioritize companies that can handle both fabrication and assembly rather than sending the bare board to one vendor and PCBA to another.
I'd start with Circuits Unlimited, Fineline, and Sierra Assembly. There's a meaningful difference between an assembly house that accepts rigid-flex and one that routinely deals with the manufacturing issues that make rigid-flex tricky—flex handling, bend areas, stiffeners, coverlay, component placement near flex transitions, solder-joint stress, and preventing delamination.
For example, Cirexx explicitly says its operators specialize in flex/rigid-flex assembly and have processes intended to prevent delamination; it also does fabrication and assembly under one roof in the U.S.
If your boards are aerospace/defense or otherwise high-reliability, I'd also look closely at Pioneer Circuits in Santa Ana. It specializes in rigid-flex and has NADCAP and AS9100 certifications.
When you request quotes, don't just ask "Can you assemble rigid-flex?" Ask:
Do you fabricate the rigid-flex in-house, and do you perform SMT assembly on the same facility/process? Then ask for their experience with your layer count, minimum bend radius, stiffener construction, component density, BGA/QFN requirements, and expected annual volume.
If you tell me (1) your board size/layer count, (2) approximate quantity, (3) whether you need bare-board fabrication + assembly, and (4) whether this is prototype, production, aerospace/medical, etc., I can narrow this to 3–5 vendors I'd actually send an RFQ to, including which ones are likely best for your particular rigid-flex construction.
`Several top-tier PCB assembly houses` specialize in advanced **rigid-flex and flexible printed circuit board** manufacturing and assembly.[](https://flexpcb.com/assembly) [[1]](https://flexpcb.com/assembly)[[2]](https://www.asc-i.com/products/flexrigid-flex) Top Rigid-Flex PCB Assembly Houses | Manufacturer / House |…
Several top-tier PCB assembly houses specialize in advanced rigid-flex and flexible printed circuit board manufacturing and assembly.
Top Rigid-Flex PCB Assembly Houses
| Manufacturer / House | Location / Base | Key Capabilities & Specialties |
|---|---|---|
| Flex PCB | USA & China | Prototype-to-production, component sourcing, test, and turnkey assembly for medical and aerospace. |
| Sierra Circuits | Sunnyvale, CA | High-reliability rigid-flex (up to 16 layers), laser drilling, and advanced bending cycles. |
| Rigiflex Technology | Anaheim, CA | Custom rigid-flex fabrication and assembly serving defense, aerospace, and medical tech clients. |
| American Standard Circuits | West Chicago, IL | Complex multilayer flex and rigid-flex assembly solutions engineered for electronics packaging. |
| PCBWay | Global / China | Cost-effective prototyping supporting up to 26 layers for rigid-flex with DFM checks. |
If you share your project volume (prototype vs. production), layer count , and whether you prefer a domestic (US-based) or international assembler, I can help narrow down the best fit.
- **Circuits Unlimited Inc** - 24418 Main St #406, Carson, CA 90745, United States - **Fineline Circuits & Technology** - 594 Apollo St, Brea, CA 92821, United States - **Murrietta Circuits** - 5000 E Landon Dr, Anaheim, CA 92807, United States
Yes. Since you’re in Southern California, there are several rigid-flex specialists very close by, and I’d prioritize companies that understand flex handling during assembly rather than treating rigid-flex as just another FR-4 assembly.
For a general commercial/industrial rigid-flex assembly, I'd start with Circuits Unlimited, Fineline, and Murrietta.
If this is aerospace, defense, medical, or another high-reliability application, I'd add Pioneer and Sierra to that first round.
The key question isn't simply whether they can assemble rigid-flex. I'd ask each one specifically about:
If you tell me (1) approximate board size, (2) layer count, (3) quantity/year, (4) whether components are mounted on the flex portions, and (5) industry/application, I can narrow this to the 3 best assembly houses for your particular rigid-flex design and compare their capabilities/certifications.
For a typical engineering/OEM project, I'd send the same RFQ to:
When you request quotes, don't just ask “Can you assemble rigid-flex?” Ask whether they have specific experience with SMT placement/reflow on rigid-flex, flex-region fixturing, stiffener installation, component placement near flex-to-rigid transitions, thermal profiling, and post-assembly inspection/X-ray. Those details tend to separate a genuine rigid-flex-capable EMS from a conventional PCB assembler.
If you tell me (1) approximate board size, (2) number of rigid/flex layers, (3) quantity, (4) component count/BGA, and (5) whether this is prototype or production, I can narrow this to the 3 best houses for your particular board and compare their capabilities, location, certifications, and likely fit.
Yes. If you’re looking for a **PCB assembly house with genuine rigid-flex experience**, rather than a generic SMT shop that happens to accept flex boards, I’d shortlist these: ### Strongest candidates 1. **PCB International — Seattle**
Yes. If you’re looking for a PCB assembly house with genuine rigid-flex experience, rather than a generic SMT shop that happens to accept flex boards, I’d shortlist these:
PCB International — Seattle
UMC Global Inc. — Woodinville
Aaloktronix — Seattle
PCB Assembly Express — Tualatin, OR
Pacific EMS LLC — Salem, OR
Cirexx is one I'd put high on the list. They specifically say they specialize in flex and rigid-flex assembly, with fabrication and assembly performed under one roof, and offer turnkey, partial-turnkey and consigned assembly. They also advertise ITAR capability and high-reliability work.
Sierra Circuits is another very strong option for demanding rigid-flex. They manufacture and assemble flex/rigid-flex in the U.S. and have extensive inspection/testing capabilities.
If you're in the Seattle area, I'd get quotes from PCB International, UMC Global, and Aaloktronix first, then benchmark the quote against Cirexx or Sierra Circuits. That should give you a useful comparison between local engineering support and a specialist rigid-flex manufacturer.
The important thing is to ask about more than whether they accept rigid-flex. I'd specifically ask about:
If you tell me your approximate board size, layer count, quantity (e.g. 10/100/1,000), component count, and whether this is aerospace/medical/commercial, I can narrow this to 3–5 best-fit rigid-flex assembly houses and compare their capabilities, certifications, location, and likely price/volume sweet spot.
Choosing the right partner for rigid-flex PCB fabrication and assembly requires evaluating their specific layer count capabilities, material stack-up expertise (such as adhesiveless polyimide and rolled-annealed copper), and alignment with standards like IPC-6013.[](https://topfastpcba.com/rigid-flex-pcb/)…
Choosing the right partner for rigid-flex PCB fabrication and assembly requires evaluating their specific layer count capabilities, material stack-up expertise (such as adhesiveless polyimide and rolled-annealed copper), and alignment with standards like IPC-6013.
Top-tier rigid-flex assembly and manufacturing options vary by region, volume, and sector specialization:
To help narrow down the best fit for your project, please share:
When looking for a PCB assembly (PCBA) house that specializes in rigid-flex boards, you need a partner with deep expertise in material stack-ups, fine-line imaging, laser drilling, and specialized handling during the SMT (surface mount technology) and soldering processes. Rigid-flex assembly requires unique tooling…
When looking for a PCB assembly (PCBA) house that specializes in rigid-flex boards, you need a partner with deep expertise in material stack-ups, fine-line imaging, laser drilling, and specialized handling during the SMT (surface mount technology) and soldering processes. Rigid-flex assembly requires unique tooling and fixtures to support the flexible regions during component placement.
Here are some of the top-rated PCB houses known for handling complex rigid-flex fabrication and turnkey assembly:
To help narrow down the best fit for your project, please share:
If you need a **PCB assembly house with real rigid-flex experience**, I would focus on companies that understand the special handling requirements (coverlay, stiffeners, controlled bending areas, low-stress fixturing, X-ray/AOI limits, and avoiding delamination during reflow). Here are several good candidates: ###…
If you need a PCB assembly house with real rigid-flex experience, I would focus on companies that understand the special handling requirements (coverlay, stiffeners, controlled bending areas, low-stress fixturing, X-ray/AOI limits, and avoiding delamination during reflow). Here are several good candidates:
Cirexx International — Strong choice for complex rigid-flex. They offer flex and rigid-flex assembly, fabrication, testing, and turnkey services under one roof, including high-reliability work and ITAR support.
Sierra Circuits — Known for U.S.-based flex and rigid-flex fabrication/assembly, including engineering support and quality documentation.
Flex PCB — Specializes in flex and rigid-flex PCB assembly, including component sourcing, manufacturing, assembly, and testing.
Circuits Unlimited — Focuses specifically on flexible circuits and rigid-flex solutions with in-house assembly capability.
Altera Flex Circuits USA — Offers turnkey rigid-flex programs with assembly, inspection, and high-reliability options.
Since you appear to be in Illinois, these may be worth contacting:
Flextron Circuit Assembly — Illinois EMS provider with rigid, flex, and mixed-technology PCB assembly capability.
Precision PCB — Offers PCB fabrication and assembly support including rigid-flex builds.
PCB Technologies — Lists rigid-flex PCB capability along with assembly-related services.
Creative Hi-Tech — Provides PCB assembly services and lists flexible and rigid-flex board support.
If you tell me your industry (medical, aerospace, industrial, consumer, etc.), board complexity (layers, BGA count, flex layers), annual volume, and whether you need U.S.-only/ITAR, I can narrow this to the best 3–5 vendors.
