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Flex PCB Manufacturer
LZJPCB builds custom flex PCB for electronics manufacturers. We have an ISO-certified FPC factory, covers 2500 square meters and includes a 100,000 class cleanroom. We can handle both prototypes and mass production, and offer a quick turn flex PCB assembly services.
Senior Electronics Engineer
What is a Flex PCB?
Flex PCB, or flexible printed circuit board, is also known as an FPC or polyimide PCB. It’s a type of electronic circuit board built on a flexible substrate, usually made of polyimide or polyester film, rather than the rigid material used in standard PCBs.
The base material can bend and flex without breaking, which makes flex PCBs a good choice when a circuit needs to fit into a tight space, or move around a lot, and they can even replace traditional wire harnesses. it means they can be used in all sorts of applications where a rigid PCB just wouldn’t work.
Core Material Stack for Standard Single-Layer Flex PCB
| Layer | Material | Function |
|---|---|---|
| Cover Layer | Polyimide film with adhesive | Protection and insulation |
| Copper Conductor | Rolled Annealed Copper | Signal and power routing |
| Base Substrate | Polyimide 12.5–125 μm | Flexibility and heat resistance |
| Adhesive | Acrylic or epoxy | Layer bonding |
| Stiffener | FR4, PI, or steel | Localized rigidity at connectors |
Why Polyimide? It handles temperatures from -65°C up to +260°C. That is why it works so well for automotive, medical parts and aerospace where thermal cycling happens. It also carries a UL 94 V-0 flame rating and has strong chemical resistance.
A standard flex PCB substrate typically uses 1 oz (35 μm) or 0.5 oz (18 μm) rolled annealed copper. This type of copper has a better ability to withstand flexing compared to electrodeposited (ED) copper, because its grain structure helps resist cracking when bent repeatedly.
Advantages of Flex PCB for Electronics Manufacturers
For B2B electronics manufacturers evaluating flex PCB solutions, the following advantages directly impact product performance, BOM cost, and production efficiency:
- Space and Weight Reduction
Flex PCBs mean you don’t need wire harnesses or extra connectors. These circuits can cut assembly weight by up to 75% and volume by up to 60% compared to rigid boards and cable setups, which is a massive deal for drones, wearables, and medical devices.
- Design Freedom in 3D Space
Unlike rigid boards constrained to flat, planar routing, flex PCBs can be folded, bent, and shaped to fit inside complex product housings, reducing the need for mechanical connectors and board-to-board interconnects.
- Dynamic Flex Capability
Properly designed flex circuits can withstand millions of flex cycles (dynamic flex applications), making them the only viable solution for moving parts such as printer heads, foldable display, and robotic joints.
- Improved Signal Integrity
Shorter, more direct signal paths in flexible circuits can reduce parasitic inductance by 30% to 50% and parasitic capacitance by 20% to 40%, enabling clean signal transmission up to 20 GHz, improving performance in high-frequency and high-speed digital designs.
- Reduce Assembly Errors
By replacing complex wiring harnesses with single-chip integrated flexible circuit boards, manufacturers can avoid wiring errors, and with fewer solder joints, this directly improves production yield and reduces after-sales warranty costs.
- Thermal Management
Polyimide flexible circuits can operate continuously within a temperature range of −200°C to +300°C, the conductor thickness can be as thin as 12.5 μm. this combination of thermal stability and ultra-thin construction, enables efficient heat dissipation in confined spaces, It is ideal for applications with extremely demanding heat dissipation and space requirements, such as LED lighting, power modules, and medical imaging equipment.
- Cost-Effectiveness at Scale
The cost of a single flexible PCB is higher than that of a rigid PCB. However, for production runs exceeding 5,000 units, the overall production cost of flexible PCBs is reduced by 15 to 25%, due to the elimination of cables, connectors, and manual assembly. Fewer interconnection points result in a lower rework rate, further reducing costs.
Which Industries Use Flexible Printed Circuits?
Flex PCBs show up in nearly every industry. And this breakdown is based on the actual production orders we see at LZJPCB:
Consumer Electronics
- GPS Devices: flex PCB for GPS units that need tight impedance control.
- Smartphones: inner display connections and camera modules. Plus, fingerprint sensors.
- Wearables and Smart Rings: 4-layer FPC for heart rate sensors and IMU modules.
- Audio Products: flexible speaker wiring and touch control panels.
Automotive Electronics
- Dashboard display wiring (LVDS flex cables).
- Automotive lighting FPC used for LED headlights and tail lights.
- Sensor arrays for ADAS systems.
- EV battery management system (BMS) connections.
Medical Devices
- Continuous Glucose Monitors (CGM): ultra-thin FPCs for patches that stick to the skin.
- Surgical instruments: tiny sensor circuits for endoscopes.
- Patient monitoring wearables.
- Flex connections for diagnostic imaging gear.
Industrial and Instrumentation
- Wiring replacements for robotic joints.
- Industrial scanners and barcode readers.
- Test and measurement equipment.
Aerospace and Defense
- Satellite subsystem connections.
- Avionics panels that need to withstand heavy vibration.
- UAV control system flex circuits.
Smart Wearables and IoT
- Smart watch display connections
- IoT sensor nodes requiring conformal mounting
Explore our industry-specific FPC solutions: Automotive PCB | Medical PCB | Consumer Electronics PCB
Choose the Right Flex PCB Type for Your Products
You need to know the four main flex PCB types to pick the right design for your specific project:
Single-Sided Flex PCB
- Structure: This is just one copper layer on a polyimide base. It has a coverlay on one side.
- Typical Thickness: 0.06-0.15 mm
- Best For: Basic connections, sensors, and simple electronics.
- Cost Index: Lowest
Double-Sided Flex PCB
- Structure: There is copper on both sides of the polyimide, the layers link up through plated through-holes (PTH) or microvias.
- Typical Thickness: 0.1-0.25 mm
- Best For: Tougher circuits where you mount parts on both sides. Cameras and medical sensors are common examples.
- Cost Index: Medium
Multilayer Flex PCB (3-8 Layers)
- Structure: This setup uses three or more copper layers. You can use blind or buried vias to save space.
- Typical Thickness: 0.2-0.4 mm
- Best For: High-density jobs and aerospace devices. They work well for advanced medical devices that need impedance control.
- Cost Index: High
- LZJPCB Capability: Up to 8 layers for FPC and rigid-flex configurations
Rigid-Flex PCB
- Structure: This board combines rigid FR4 parts and flexible polyimide sections.
- Best For: Projects that need a solid area for parts but also need flexible sections. And they are the must choice for things like UAVs, military tech, and medical imaging.
- Cost Index: Highest
- Key Benefit: It gets rid of connectors between boards. This means fewer failure points, plus it allows for actual 3D packaging.
For rigid-flex specific requirements, visit our dedicated Rigid-Flex PCB page.
Flex PCB Type Comparison Table
| Type | Layer | Min Thickness | Component Mounting | Flex Cycles | Relative Cost |
|---|---|---|---|---|---|
| Single-Sided | 1 | 0.06 mm | One side only | 10M+ | Low |
| Double-Sided | 2 | 0.10 mm | Both sides | 500K+ | Medium |
| Multilayer | 3–8 | 0.20 mm | Both sides | 100K+ | High |
| Rigid-Flex | 2–10 | 0.25 mm | Rigid sections | N/A (static flex) | Very High |
Flex PCB Design Considerations: DFM Rules Every Engineer Should Know
Getting Design for manufacturability (DFM) right in flexible PCB has an absolute impact on production yield, cost, and how long the board actually lasts.The following guidelines are based on the production experience of the LZJPCB engineering team:
Bend Radius Rules
The minimum bend radius is the main thing to get right when you design flex PCB:
| Copper Weight | Min Bend Radius (Static) | Min Bend Radius (Dynamic) |
|---|---|---|
| 0.5 oz (18 μm) | 6× board thickness | 12× board thickness |
| 1 oz (35 μm) | 10× board thickness | 20× board thickness |
| 2 oz (70 μm) | 15× board thickness | 30× board thickness |
Rule: Don’t put vias or through-holes in the bend zone. Stress tends to collect around those drill holes. It’ll lead to cracks when the board flexes.
Conductor Routing in Flex Zones
- Run conductors perpendicular to the bend for static flex.
- For dynamic flex, run them at ±45° to the bend. That helps spread out the stress.
- Don’t design 90° bends into your traces. Use curved transitions instead.
- Stagger conductors on opposite layers. Don’t just stack them directly on top of each other.
Copper Balance and Hatching
- Keep the copper coverage difference between any two layers at 15% or less. IPC-6013 (test method: IPC-TM-650 2.4.22) warns that unbalanced designs will pass bow and twist limits. Specifically, 0.75% of the length or diagonal for boards with SMT parts, or 1.5% without. Going past these limits makes SMT misalignment and solder joint stress certain. Which leads to assembly failures.
- Use crosshatch or mesh fills for large ground planes on flex layers, aiming for about 50% copper coverage (0.2 mm trace / 0.2 mm space, for example). This gives you 3x-10x better bending life and cuts the minimum bend radius to 3-5x thickness. Solid copper requires 10-20x. Shielding effectiveness stays at 70%-90% of solid copper. And there is barely any degradation below 1 GHz.
Stiffener Placement
Stiffeners, made from materials like FR4, polyimide, or stainless steel, add rigidity to specific areas. They’re usually 0.1-0.5 mm thick for FR4, 0.075-0.3 mm for polyimide, and 0.1-0.3 mm for stainless steel.
Required at:
- ZIF/FFC connector insertion zones. the stiffener needs to be at least 1 mm longer than the connector body, and its thickness should match the connector’s within 0.05 mm.
- Component mounting areas. this provides a stable surface for SMT assembly.
- Edge termination points. it reinforces the edges of connectors or tabs.
Critical design rule: keep a minimum gap of 1 mm between the stiffener edge and the flex zone. And, to prevent stress concentration, round the stiffener corners with a radius of at least 0.5 mm. Also, stiffeners should never extend into the designed flex zone.
Coverlay vs. Solder Mask
- Coverlay (polyimide film with adhesive) is the best choice for flex circuits. It’s typically 0.025-0.075 mm thick. And it can withstand a lot of bending that over 100,000 flex cycles. LPI usually cracks after 1,000-10,000 cycles if you bend it too much, like below a 5-8 mm radius. But coverlay stays intact even at a 1-3 mm radius.
- LPI solder mask has its limits. It cracks when you flex it too much. So on rigid-flex PCB, it’s best to use LPI only on the rigid parts, where the board is at least 0.5 mm thick, and there’s a 1 mm gap or more from the flex zone. That way, you can avoid the cracking problem.
Material Selection
- Polyimide (PI): Good for heat between 150°C and 200°C and flex life over 1M cycles, tough chemicals, or lots of flexing.
- Polyester (PET): Handles -40°C up to +105°C, but only for static flex under 1000 bends. A cheaper choice for non-critical jobs.
- LCP: For high-frequency designs between 10 and 60 GHz. Dk is roughly 3.0–3.3 and Df is 0.002–0.005 at 10 GHz.
LZJPCB DFM Service: Our engineers do a DFM check on every Gerber file you send in. We look for things like bend radius errors or vias in the wrong spots before we start building.
Flexible PCB Fabrication Process: How LZJPCB Manufactures Your FPC
Knowing step-by-step flex PCBs manufacturing process helps you talk about your needs and set the right quality bars. Here is the full LZJPCB fabrication workflow:
Step 1: Material Preparation
We cut the base material (polyimide film with copper foil) to panel size. Then we check for surface defects. LZJPCB uses A-grade copper-clad laminates from Kingboard, Shengyi, and Goldenmax. These meet UL and RoHS standards.
Step 2: Inner Layer Imaging (Multilayer Only)
For multilayer FPC, we coat inner layers with dry-film photoresist. We use LDI (Laser Direct Imaging) to get the patterns right. It keeps line and space accuracy at ±0.01 mm. Which is a big deal for fine-pitch designs.
Step 3: Etching
Chemicals etch the exposed copper to remove what we don’t need, leaving the circuit patterns behind. LZJPCB’s etching line achieves a minimum line and space of 0.035 mm on flex layers.
Step 4: Lamination (Multilayer)
We align and laminate inner layers together with polyimide films. This uses controlled heat, pressure, and a vacuum. A 100,000-class cleanroom environment prevents dust from getting between the layers.
Step 5: Drilling
- Mechanical drilling min 0.10 mm for through-holes and vias
- Laser drilling min 0.075 mm for microvias and blind vias
Step 6: PTH Processing
We activate the drilled holes and plate them with copper. This makes the electrical connections between the layers work.
Step 7: Outer Layer Imaging and Etching
We use the same LDI process to image and etch the outer layer circuits.
Step 8: Coverlay Application
We cut, position, and laminate the polyimide coverlay film over the outer copper. We use heat and pressure for this. It protects the conductors, but the board stays flexible.
Step 9: Surface Finishing
Available surface finishes for LZJPCB flex PCB:
| Finish | Solderability | Shelf Life | Best For |
|---|---|---|---|
| Immersion Gold (ENIG) | Excellent | 12 months | Fine-pitch SMD, connectors |
| ENEPIG | Excellent | 12 months | Wire bonding and soldering |
| Immersion Silver | Good | 6 months | Cost-sensitive, high-frequency |
| Immersion Tin | Good | 6 months | Press-fit connectors |
| OSP | Good | 6 months | Low-cost, rapid turnaround |
| Plating Gold | Excellent | 24 months | Gold fingers, ZIF connectors |
Step 10: Electrical Testing
We run 100% electrical continuity and insulation resistance tests using flying probes or fixture-based setups. And LZJPCB hits a over 98% product pass-through rate.
Step 11: AOI (Automated Optical Inspection)
We check all panels using automated optical inspection systems. The system looks for opens, shorts, and missing features. It also checks for dimensional accuracy.
Step 12: Shape Cutting
We route, punch, or laser-cut the panels into the final FPC shape. CNC routing handles the tricky non-rectangular outlines.
Step 13: Final Inspection and Packaging
We look at the finished FPCs under 5× magnification. We measure impedance if the specs ask for it, then we pack the FPC boards in anti-static, moisture-barrier bags.
Flex PCB vs. Rigid PCB: Technical Comparison for Product Engineers
When evaluating whether to use a flex PCB or a rigid PCB for your design, consider the following comparison:
Technical Comparison Table
| Parameter | Flex PCB | Rigid PCB |
|---|---|---|
| Substrate | Polyimide (PI) or PET film | FR4 epoxy glass laminate |
| Minimum Thickness | 0.06 mm for one FPC layer | 0.2 mm |
| Flexibility | Bendable, foldable, rollable | Not flexible |
| Weight | 30 to 75% lighter than equivalent rigid | Heavier |
| Temperature Range | –65°C to +260°C | -55°C to +130°C for standard FR4 |
| Dielectric Constant (Dk) | PI: approximately 3.5 | FR4: approximately 4.2 to 4.8 |
| Surface Finish Options | ENIG, ENEPIG, Immersion Silver, Immersion Tin, OSP | HASL, ENIG, ENEPIG, OSP, Gold Finger |
| Assembly | Requires flexible SMT fixturing | Standard SMT assembly |
| Typical Applications | Wearables, medical, automotive, UAV | Computers, industrial control, power supplies |
| Unit Cost | Higher | Lower |
| Total System Cost | Lower due to fewer connectors and cables | Higher if wire harnesses are needed |
| Lifespan in Dynamic Use | More than 10 million flex cycles | Not applicable; rigid board fractures immediately when bent |
Choose Flex PCB when:
- You are trying to fit 3D packaging into a tight or awkward spot.
- The board has to handle bending over and over 1,000 cycles without breaking.
- Keeping the build thin and light is a top priority.
- You want to swap out several wire harnesses for one integrated circuit.
- The part is always moving, for example in a robotic arm, printer head, or camera gimbal.
Stick with Rigid PCB when:
- The circuit just sits there, it doesn’t move.
- You are dealing with high component density and through-hole parts.
- But the extra cost for flex doesn’t make sense for your budget.
- Standard FR4 properties are plenty for what you’re doing.
LZJPCB Flex PCB Manufacturing Capabilities
LZJPCB started its dedicated FPC manufacturing branch in 2022 as part of our broader pcb manufacturing capabilities. The 2,500 m² factory meets 100,000-class cleanroom standards. Our technical setup covers the full flex PCB needs, ranging from simple commercial work to advanced builds.
FPC Manufacturing Specifications
| Parameter | Capability |
|---|---|
| Layer Count | 1 to 8 layers for FPC; up to 10 layers for rigid flex |
| Maximum Panel Size | 250 by 1000 millimeters |
| FPC Thickness | 0.06 to 0.4 millimeters for flex zones; 0.25 to 6.0 millimeters for rigid flex |
| Minimum Line Width | 0.035 mm (35 μm) |
| Minimum Line Space | 0.035 mm (35 μm) |
| Min. Mechanical Drill | 0.10 mm |
| Min. Laser Via | 0.075 mm |
| Copper Thickness | 12, 18, 35, 70, or 105 micrometers |
| Impedance Control | 50Ω to 120Ω (±10%) |
| Thickness Tolerance | ±0.03 mm |
| Surface Finishes | ENIG, ENEPIG, Immersion Silver, Immersion Tin, OSP, Plating Gold |
| Stiffener Materials | FR4, Polyimide, Stainless Steel |
| Monthly Capacity | 8,000 m² |
| Pass-Through Rate | ≥98% |
| Prototype Delivery | 24 hour quick turn available |
| Mass Production | Standard turnaround is 5 to 10 working days |
Certifications and Quality Standards
We make all LZJPCB flex PCB products under these quality management systems:
- ISO 9001:2015 – Quality Management System
- ISO 13485:2016 – Medical Device Quality Management (covering medical FPC applications)
- IATF 16949:2016 – Automotive Quality Management System
- ISO 14001:2015 – Environmental Management
- UL Certification (USA) for applicable PCB materials
- RoHS & REACH Compliant – all products meet EU environmental directives
Flex PCB Assembly (FPC and SMT Integration)
LZJPCB also provides full PCB assembly including FPC fabrication and SMT integration for flex PCB assembly.
- We mount on FPC using YAMAHA (Model: YSM10 and YSM20R) high-speed machines.
- Smallest parts: 01005 chips or 0.4mm pitch BGAs.
- We use custom FPC fixtures and carriers to stop boards from bending during reflow.
- Soldering is handled with 10-zone programmable controls.
- We check everything with 3D SPI, online AOI, and X-Ray inspection.
- Capacity: 8 million solder joints per day.
Turnkey FPC Solution: We take your Gerber files and deliver finished, tested boards. LZJPCB handles every step under one roof. And it removes the risk of managing a messy supply chain.
Quick Turn Flex PCB Prototyping: From Gerber to Shipped in 24 Hours
For engineers who need to validate a flex PCB design quickly, LZJPCB offers industry-leading quick-turn FPC prototyping services
Prototype Turnaround Options
| Service Level | Layers | Lead Time | Best For |
|---|---|---|---|
| Super Rush | 1–2L | 24 hours | Urgent design validation |
| Standard Rush | 1–4L | 48–72 hours | First article testing |
| Express | 1–6L | 3–5 days | Pre-production samples |
| Standard | 1–8L | 5–10 days | Full prototype runs |
What's Included in Every FPC Prototype Order
- Our engineers will review your Gerber files for common flex PCB design issues before production starts, it’s a free DFM check
- If issues are found, we’ll consult with you before making any changes.
- Every prototype board is put through 100% electrical testing
- We also do AOI inspection on all layers
- A detailed inspection report is available if you need it
- Your prototypes are packaged in anti-static and moisture barrier bags, with silica gel desiccant for protection
Flex PCB Prototyping Process
- File upload, then our engineers review it
- Followed by panelization, material cutting, imaging, etching, and coverlay
- Surface finish, electrical test, AOI, cutting, quality control, and shipping
Same day shipping is available for qualified rush orders, as long as we receive your files before 9:00 AM CST.
Why LZJPCB Is a Trusted Flex PCB Supplier for Global Electronics Manufacturers
Since 2006, LZJPCB (Shenzhen PCB Electronics Ltd.) has grown from a PCB factory into a global partner for turnkey electronics manufacturing. We now run our own specialized facilities for PCB, FPC, and PCBA production to keep everything under one roof.
We are a real FPC Factory
A lot of companies that call themselves flex PCB manufacturers actually outsource that work. LZJPCB doesn’t do that. We opened our own 2,500 m² FPC factory in 2022 with full in-house capability from material to finished board. This gives us direct control over the quality of the boards.
Everything in One Place
We manage the entire production chain so you don’t have to deal with logistics headaches. It boils down to one PO, one point of contact, and one delivery.
- PCB Design and DFM help
- FPC, Rigid PCB, and Rigid-Flex production
- SMT Assembly and PCBA
- Sourcing components (BOM procurement)
- Final Assembly and testing
There factories in China and one factory in Indonesia
| Facility | Location | Size | Specialization |
|---|---|---|---|
| HQ Factory | Shenzhen, China | 6,000 m² | PCB, Sales and Engineering |
| Jiangxi Factory | Jiangxi, China | 15,000 m² | PCB Mass Production |
| Changsha Center | Changsha, China | 3,000 m² | Precision PCBA Assembly |
| Indonesia Factory | Indonesia | 4,000 m² | Overseas PCBA (Reduce tariff risks) |
The Indonesia factory opened in 2025. It lets us reach Southeast Asian customers much faster. And it helps lower tariff costs, this is important for clients who need manufacturing certificates from outside of China.
Certifications for Your Industry
LZJPCB holds ISO 9001, ISO 13485 (medical), IATF 16949 (automotive), ISO 14001, and UL. We cover the bases for B2B requirements. You won’t need to hunt for a new supplier if your product moves from Industrial equipment into medical or car parts.
Experience with Big Brands
LZJPCB has worked with names like Panasonic, Huawei, Jabil, BYD, Mindray, Philips, Hikvision, Sungrow, and Foxconn. Our quality is high enough to pass the strict audits these companies run on their suppliers.
Clear Pricing for Any Quantity
Pricing is clear, we list every cost for the PCB and the parts right in the quote. We benchmark sample prices against mass production, so you get a fair unit price even if you are only ordering a prototype.
Support from Real Engineers
Jayden and our engineering team give you technical help directly. They can look at your DFM, check impedance stack-ups, or advise on materials. You get to talk to an engineer instead of just a sales person.
Flex PCB FAQ Answers
How much does a flex PCB cost?
A single layer polyimide flex PCB prototype for 10 pieces between costs 30 to 70 US dollars. A double sided flex PCB prototype runs from 60 to 140 US dollars. A multilayer flex PCB with 4 or more layers starts at 120 US dollars per prototype set. But mass production of 1000 pieces or more drops the unit price by 60 to 80 percent, this is a really huge saving. You can get an instant online quote from LZJPCB.
How do I get a flex PCB quote from LZJPCB?
To get a quote, you can upload your Gerber files to the LZJPCB online quote page. Alternatively, email your files and requirements to Jayden@lzjpcb.com. LZJPCB responds to all quote requests within 12 business hours on working days. If you’re in a rush or need an NDA, just contact us directly.
What is the minimum order quantity for flex PCBs at LZJPCB?
LZJPCB doesn’t have a minimum order quantity for prototype flex PCB, you can order just 1 to 5 pieces to test your design. Price breaks for mass production start at 100 pieces. And you get better rates at 500 and 1000 pieces or more.
What is the difference between FPC and flex PCB?
There isn’t a technical difference between an FPC and a flex PCB. They’re just two names for the same thing. People in North American and European markets usually say flex PCB. But manufacturers in Asian countries like Japan and China, or Korea, use the abbreviation FPC. Both terms describe a circuit board built on a flexible polyimide or polyester substrate. Which is why you can use one or the other when ordering.
Can LZJPCB manufacture flex PCBs with impedance control?
Yes. LZJPCB support impedance values from 50 to 120 ohms, with a tolerance of plus or minus 10 percent. For differential pairs, like USB or LVDS, impedance control is a must. same with RF signal lines and high-speed data interfaces. Before production, our engineers do stack up calculations. And if you need them, we can provide TDR impedance test reports.
What surface finishes are available for flex PCB?
LZJPCB offers six surface finishes for flex PCB, including ENEPIG, Immersion Silver, Immersion Tin, OSP, and Plating Gold. ENIG is the most finish for flexible circuits, it gives you a flat surface that’s perfect for fine pitch SMT assembly. ENIG also delivers a 12 month shelf life. Plating Gold, on the other hand, is a must for gold finger contacts and ZIF connector insertion zones, because it provides the necessary conductivity.
How long does it take to manufacture a flex PCB prototype?
LZJPCB can finish 1 to 2 layer flex boards in 24 hours using rush service. Rush orders for 3 to 4 layer FPC take 48 to 72 hours. Complex multilayer or rigid flex designs take 5 to 7 days with rush. But standard lead times without rush usually take 5 to 10 working days. Which depends on the layer count and specs.
What file formats does LZJPCB accept for flex PCB orders?
We usually ask for Gerber RS-274X, but we take ODB plus plus and Excellon drill files too. Use DXF for board outlines or cutouts. For flex specific features like coverlay openings or stiffener locations, just bundle a PDF fab drawing with your Gerbers. Export your Gerber packages from Altium Designer or Eagle. KiCad and PADS work too.
Does LZJPCB offer flex PCB assembly with FPC and SMT?
Yes, LZJPCB offers full flex PCB assembly. This includes SMT placement and reflow soldering using FPC specific fixture carriers. We can handle component packages as small as 01005 and 0.4 millimeter pitch BGA on FPC substrates. Our inspection methods include 3D SPI, AOI, and X Ray. And you can combine fabrication and assembly in one purchase order, which makes project management a lot easier.
What is a polyimide PCB different from a standard FR4 board?
A polyimide PCB is made with a polyimide film, not the fiberglass and epoxy resin used in standard FR4 boards. Polyimide can run continuously at up to 260 degrees Celsius, while FR4 tops out at 130 degrees Celsius. And polyimide is flexible, so it can be bent and folded, this offers big advantages over rigid FR4 boards. Polyimide also holds up better to chemicals and tough environments. For these reasons, polyimide PCB are the industry standard for flexible printed circuits.
Can LZJPCB make rigid flex PCB?
Yes, LZJPCB does manufacture rigid flex PCB. These boards combine FR4 rigid sections and polyimide flexible sections in a single integrated board. The maximum layer count is 10 layers. And this design is particularly useful for applications that need stable areas for mounting components, connected by flexible interconnects within the same board. You can find more information on our Rigid Flex PCB page.
Unlock More Possibilities with LZJPCB Solutions
- Standard and high-Tg
- 1 to 40 Layers
- Industry Standard
- Hybrid Structure
- 2 to 20 Layers
- Aerospace and Medical
- Any Layer, Stacked
- Microvia 0.075mm
- 3mil and 3mil trace
- RO4350B, 4003C
- Up to 110 GHz
- RF, 5G and Radar
- 1 to 4 Layers
- Thermal 1-9 W/mK
- LED Lighting
- 2oz to 20oz Copper
- High Current
- Power Electronics
- Al₂O₃, AlN
- High Thermal
- LED, Power
