Custom Bare-Board Fabrication · Prototypes to Production
4 Layer PCB
Manufacturing
Get your next 4-layer board built with PCBELEC. From FR-4 prototypes to custom production builds, we bring together stackup, impedance and DFM support—with flex and rigid-flex options for projects that need a different structure.
- Standard and custom four-layer builds for your circuit and product requirements.
- Practical engineering support for materials, stackups and manufacturing details.
- Flexible production support from initial prototypes to repeat board supply.
Send your fabrication files to sales@pcbelec.com
- Board Structures Rigid, Flex & Rigid-Flex
- Engineering Support Stackup, Impedance & DFM
- Manufacturing Stages Prototypes to Production
Four Circuit Layers. Different Ways to Build.
4 Layer PCB Construction Options
Start with a rigid FR-4 board or choose a flexible construction for a different product layout. PCBELEC brings the material and manufacturing support together for your four-layer project.
01 / Rigid Construction
4-Layer Rigid PCBs
A practical foundation for control boards, connected devices and everyday electronics. We manufacture standard and custom FR-4 constructions with material, copper and stackup options for your prototype or production order.
View 4-Layer FR-4 Capabilities02 / Flexible Construction
4-Layer Flex PCBs
Bring multilayer connections into compact and shaped installations. Our flexible manufacturing supports polyimide materials, coverlay, connection features and local stiffeners for the intended installation and bend requirements.
Explore Flexible PCB Manufacturing03 / Integrated Rigid-Flex
4-Layer Rigid-Flex PCBs
Combine rigid circuit sections and flexible interconnections in one manufactured board. We help coordinate the regional stackups, transition details and fabrication route for more integrated product layouts.
Explore Rigid-Flex PCB ManufacturingFour Layers, with the Right Construction Behind Them
Keep a familiar FR-4 build or discuss a more specialized structure with our team. For a broader view, explore our multilayer PCB manufacturing service.
Familiar FR-4 Builds & Custom Manufacturing Options
4 Layer PCB Manufacturing Capabilities
Start with a standard four-layer FR-4 build or bring us a more specialized requirement. PCBELEC combines material choices, fabrication support and electrical testing for your next board order.
Standard & Custom 4-Layer FR-4 Builds
Swipe horizontally to view the complete capability table.
| Manufacturing Item | Options / Reference | Project Support |
|---|---|---|
| Board construction | Four conductive copper layers in a rigid laminated structure. | Standard and custom stackups for prototypes, small batches and production orders. |
| Base material | FR-4 with available Tg options; specialized materials for advanced builds. | Material selection connected to the electrical, mechanical and manufacturing needs of the project. |
| Finished thickness |
Common reference:
1.6 mm. Other options include 0.8, 1.0 and 1.2 mm. | Custom thickness and dielectric construction coordinated with the board stackup. |
| Circuit copper |
Common outer-layer
reference: 1 oz. Standard outer-layer options: 0.5–2 oz. | Inner- and outer-layer copper selected separately; heavier-copper requirements supported through project review. |
| Trace / space | 4 / 4 mil reference, with finer features discussed for the selected build. | Circuit geometry matched to copper thickness, material and the fabrication route. |
| Drilled features | Mechanically drilled plated and non-plated holes, slots and mounting features. | Finished-hole dimensions, plating and surrounding copper reviewed together. |
| Impedance support | Controlled-impedance builds and project-specific verification. | Coordination of material, dielectric thickness and circuit geometry for the specified targets. |
| Surface finish | HASL, lead-free HASL, ENIG and other finishes for the selected construction. | Finish support for exposed pads and downstream assembly requirements. |
| Mask & legend | Green, black, white, red, blue and other specified colors; white or black legend. | Mask openings and board identification aligned with the released artwork. |
| Inspection & testing | Optical inspection and 100% electrical testing of finished four-layer production boards. | Additional verification and requested records planned with the manufacturing package. |
These references describe rigid FR-4 manufacturing. We help match the final combination of materials, copper and features to your actual board design.
Four-Layer Flex & Rigid-Flex Support
Swipe horizontally to view both construction options.
| Construction | Manufacturing Focus | Engineering Support |
|---|---|---|
| 4-layer flexible PCB | Polyimide-based circuit construction, coverlay, openings and local stiffeners. | Flexible-section thickness, copper arrangement, installation shape and bend requirements. |
| 4-layer rigid-flex PCB | Integrated rigid and flexible regions, regional stackups and transition details. | Layer continuity, rigid-to-flex interfaces and the mechanical requirements of the complete board. |
Have a 4-Layer Design Ready?
Send the fabrication files and quantity. Our team will help you move from board requirements to a practical quotation.
Connect the Circuit with the Manufacturing Build
4 Layer PCB Stackup, Thickness & Impedance
Get more from your four-layer build with a stackup that brings material, copper and electrical requirements together. PCBELEC helps turn those choices into a practical manufacturing specification.
Rigid FR-4 Construction Example
Four Copper Layers, One Coordinated Build
Already have a stackup? Send it with the board files. Our team can review the fabrication details and help prepare the next manufacturing step.
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Thickness Options for the Product Fit
Start with a common 1.6 mm FR-4 build or choose alternatives such as 0.8, 1.0 and 1.2 mm. We coordinate the material construction and finished thickness with your mechanical requirements.
Core and prepreg selections are part of the complete manufacturing stackup.
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Copper Matched to the Circuit
Keep inner- and outer-layer copper clearly connected to the design requirements. Our team considers conductor thickness, circuit features and etching together to support a workable build.
Explore our PCB copper thickness reference for the conductor specification basis.
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Impedance Support from Stackup to Verification
Bring the impedance targets into the manufacturing conversation early. We help coordinate material, dielectric thickness and circuit geometry, with verification planned around the project.
For more specialized laminate requirements, explore our high-frequency PCB manufacturing service.
A Different Stackup for Flexible Boards
Four-layer flex builds bring together flexible dielectric, circuit copper, protective layers and local reinforcement. We support the installation and bend requirements through our flexible PCB manufacturing service.
Rigid-Flex Defined by Region
Rigid and flexible areas work together in one board, with regional layer arrangements and transition details. Review the construction examples or explore our rigid-flex PCB service .
Practical Engineering Support, Carefully Manufactured Boards
4 Layer PCB Engineering, DFM & Quality
Get manufacturing support before the first board is made. Our team reviews the details that connect your four-layer design to a practical build, then follows the board through fabrication and inspection.
Files, Materials & Stackup Review
Bring the artwork, drill data and construction requirements together before production. We help identify fabrication questions early and keep the manufacturing release consistent.
- Matching design files and drawing revision.
- Layer order, material and finished thickness.
- Impedance and special manufacturing requirements.
Copper, Holes & Interconnections
Keep the circuit features connected to the fabrication process. Our DFM review considers copper thickness, line and gap features, holes and surrounding clearances together.
- Inner- and outer-layer copper requirements.
- Hole dimensions, annular rings and copper clearances.
- Layer-to-layer connections and the circuit reference.
Mask Openings, Finish & Markings
Complete the bare board with the surface details the next production step needs. We review mask openings, exposed pads and identification against the board artwork.
- Solder-mask coverage and pad openings.
- Surface finish and specified contact features.
- Polarity, legend and marking keepout areas.
Profiles, Panels & Regional Features
Help the finished board fit the product and production flow. We support custom outlines, mounting features and delivery panels, with construction-specific attention for flex and rigid-flex.
- Board outline, slots and mounting holes.
- Panel layout and separation features.
- Coverlay, stiffeners and rigid-flex transitions where applicable.
Quality Control from Inner Layers to Final Test
A dependable four-layer board comes from attention throughout fabrication. Our checks follow the circuit, construction and finished-board requirements through the manufacturing process.
Inner Layers & Lamination
Inner-layer inspection, registration control and lamination processing support the accuracy of the circuit and assembled layer structure.
Holes & Circuit Formation
Drilling, hole metallization and outer-layer processing connect the board's circuit features with the specified interconnection structure.
Electrical & Final Inspection
Finished four-layer production boards receive electrical testing and final inspection, with impedance checks or additional records planned for projects that need them.
A Practical Manufacturing Partner for Every Order Stage
4 Layer PCB Prototypes, Production & Pricing
Get the boards you need now, with support for the next production stage. PCBELEC brings together engineering review, fabrication and repeat-order continuity for your four-layer PCB project.
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01 / Initial Build
4-Layer PCB Prototypes
Turn your design files into boards for engineering evaluation. Our team helps work through the stackup and fabrication details before the initial build moves into manufacturing.
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02 / Refined Release
Small-Batch Manufacturing
Continue with a pilot or small-batch order as the product develops. Approved revisions are brought into a matching manufacturing package for the next build.
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03 / Ongoing Supply
Repeat Production Orders
Keep the agreed construction, material and quality requirements connected to repeat orders. Work with the same manufacturing partner as quantities and delivery needs develop.
A Quote Built Around Your Actual Board
Four layers describe the circuit count, not the whole manufacturing cost. We review the important choices together to provide a practical quotation for the board you need to build.
- Size & Delivery Format
- Finished dimensions, profile complexity, panel arrangement and individual-board or panel delivery.
- Material & Stackup
- Rigid, flex or rigid-flex construction, material selection, thickness and dielectric arrangement.
- Copper & Fabrication Features
- Conductor thickness, circuit geometry, holes, interconnections and controlled-impedance requirements.
- Finish, Quantity & Schedule
- Surface finish, order volume, additional verification and the requested delivery plan.
Let Us Help Find a Workable Production Route
Have a cost target or a required delivery date? Share it with your files. Our engineering and DFM support can help clarify the manufacturing choices behind the quotation.
Your Next Four-Layer Build Starts Here
Request a 4 Layer PCB Manufacturing Quote
Bring us your board files and project requirements. Whether you need a rigid FR-4 prototype, a flexible circuit or a rigid-flex build, our team can help you move toward manufacturing.
A Good Starting Package
- Fabrication artwork, drill data and finished board outline.
- Material, stackup, thickness and copper details where selected.
- Quantity, delivery format and requested date.
- Impedance, mechanical or inspection requirements important to the project.
Use our PCB manufacturing file guide to prepare a matching release package.
Still Working Through the Manufacturing Details?
Tell us what is already decided and where you need support. We can help work through the stackup and fabrication questions before production release.
Send Your Files Directly
sales@pcbelec.comPrepare Your 4-Layer PCB Inquiry
Add the main details below to prepare an RFQ email. Review the text, then attach your fabrication files before sending.
If no email application opens, select and copy the text into your preferred email service. Add the files and send to sales@pcbelec.com.
Construction, Stackup & Ordering Questions
4 Layer PCB Manufacturing FAQ
Find practical answers about four-layer board options, manufacturing requirements and starting your next prototype or production order with PCBELEC.
Can you manufacture rigid, flexible and rigid-flex 4-layer PCBs?
Yes. PCBELEC supports four-layer rigid FR-4 boards, flexible circuits and rigid-flex constructions. Four layers refers to the conductive circuit layers, while the material and regional construction depend on the board type. Explore the construction options to find the right starting point for your project.
What is a standard 4-layer PCB stackup?
One common rigid-board example uses outer signal layers with inner ground and power layers. Other arrangements are also possible. PCBELEC supports the material, dielectric and copper construction needed to turn the approved stackup into a manufacturing build. See the stackup and thickness section for an illustrated example.
What board thicknesses are available for a 4-layer PCB?
A common rigid FR-4 reference is 1.6 mm, with other options including 0.8, 1.0 and 1.2 mm. We can also discuss custom thickness requirements with the stackup. Flexible and rigid-flex boards use construction-specific thicknesses rather than the standard rigid-board values. Review the manufacturing capabilities for the different structures.
Do you support controlled-impedance 4-layer boards?
Yes. We support controlled-impedance fabrication and project-specific verification. Share the targets and relevant circuit requirements with the files. Our team helps coordinate the material, dielectric thickness and circuit geometry during manufacturing preparation.
Can a 4-layer flex or rigid-flex board use the same stackup as FR-4?
These constructions need their own material and layer definition. Flex builds include flexible dielectric, protective layers and any local reinforcement. Rigid-flex builds also define the rigid regions, flexible regions and transitions. The copper-layer count can differ between regions within the same rigid-flex board.
Do you offer both 4-layer prototypes and production orders?
Yes. PCBELEC supports initial prototypes, small batches and repeat production. We help carry the approved construction and design revision into the next build, with manufacturing changes reviewed before release. Learn more about our prototype and production support .
What affects the price and delivery time of a 4-layer PCB?
The main factors include board size, construction, material, copper, holes, surface finish, quantity and any additional verification. Include your requested delivery date or cost target with the inquiry so our team can discuss a practical manufacturing plan and quotation.
What files should I send for a 4-layer PCB quote?
Send the fabrication artwork, drill data, finished outline and quantity. Include the stackup, material, thickness, copper and finish where already selected. Add impedance targets, mechanical requirements and any requested records. Our PCB manufacturing file guide helps you prepare a matching release package.
Can you help review the design for manufacturing?
Yes. Our engineering and DFM support covers the fabrication details behind the board, including stackup, copper features, holes, mask openings and mechanical requirements. We help work through manufacturing questions before production. See the DFM and quality section for the review areas.
Where can I request component sourcing and PCB assembly?
This PCBELEC page handles bare-board manufacturing inquiries. For component sourcing and PCB assembly, continue to JHYPCB and discuss the requirements of your populated-board project through that service.
Ready for Your Next 4-Layer Build?
Send the board files and quantity. Our team can help turn the project requirements into a practical manufacturing quotation.
Related Manufacturing & Project References
4 Layer PCB Resources
Explore related layer counts, specialized constructions and the manufacturing references that support your next board order.