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4 Layer PCB Stack-up Manufacturer & Supplier
A 4 layer PCB stack-up is a circuit board with four conductive layers. It offers a balance of complexity and cost-effectiveness for many electronic designs. OurPCB specializes in manufacturing high-quality 4 layer PCBs for various industries and applications.











4 Layer PCB Fabrication
The fabrication of 4 layer PCBs starts with core material selection. We use FR-4 or high-frequency laminates based on your needs. The process involves precise layering of copper, prepreg, and core materials. We apply photoresist, expose, and etch the circuit patterns on each layer.
After etching, we laminate the layers together under heat and pressure. This creates a solid board structure. We then drill holes, plate them, and add solder mask and silkscreen. Our advanced equipment ensures accurate alignment and consistent quality throughout production.
PCB Manufacturing Process







The Benefits of Partnering With OurPCB As Your 4 Layer PCB Manufacturer
OurPCB offers expert 4 layer PCB manufacturing services. We combine cutting-edge technology with years of industry experience. Our team is committed to delivering high-quality boards that meet your exact specifications.





- Rigorous testing at every production stage
- IPC standard compliance for reliable performance

- Premium equipment for precise fabrication
- Capability to handle complex designs and tight tolerances

- Dedicated team for personalized assistance
- Quick response to inquiries and design modifications

- Cost-effective solutions without compromising quality
- Volume discounts for larger orders
Why Choose a 4 Layer PCB Stackup?
A 4 layer PCB stack-up offers a good balance of performance and cost. It’s suitable for many electronic designs that need more complexity than 2 layer boards. Here’s why you might choose a 4 layer PCB:

- Dedicated ground and power planes reduce noise
- Better control over impedance and crosstalk

- More routing options in a compact form factor
- Ideal for designs with moderate component density

- Better shielding against EMI
- Reduced emissions for improved product compliance

- Allows for mixed-signal designs on a single board
- Supports both through-hole and surface-mount components









- Dedicated ground and power planes reduce noise
- Better control over impedance and crosstalk

- More routing options in a compact form factor
- Ideal for designs with moderate component density

- Better shielding against EMI
- Reduced emissions for improved product compliance

- Allows for mixed-signal designs on a single board
- Supports both through-hole and surface-mount components
PCB Assembly Services
OurPCB offers comprehensive PCB assembly services to complement our fabrication capabilities. We handle projects of all sizes and complexities. Our assembly services ensure your boards are ready for immediate use upon delivery.

We use advanced Surface Mount Technology for high-density, compact designs. Our SMT lines handle a wide range of component sizes and types. This process is ideal for modern, space-constrained electronic products.

We adapt to your needs. You can provide components, or we can source them for you. Our turnkey service covers everything from part procurement to final assembly. This flexibility helps streamline your production process.

Every project is unique. We tailor our assembly process to your specific requirements. Our team works closely with you to understand and implement your design intent. This ensures the final product meets your exact needs.

Time is often critical in electronics development. We offer fast turnaround options without sacrificing quality. Our efficient processes and dedicated teams make quick deliveries possible. This helps you meet tight project deadlines.

For high-reliability applications, we offer IPC Class 3 assembly. This standard is crucial for aerospace, medical, and other critical industries. Our strict quality controls ensure these demanding requirements are always met.

We have expertise in assembling all types of IC packages. This includes BGAs, QFNs, and other complex components. Our advanced equipment and skilled technicians ensure precise placement and reliable connections.
Millions of business and innovators use OurPCB





PCB Board Process
Order Received
- Component Procurement
- Preparation
- PCB Manufacture
- Make Process Flow
Soldering
- Solder Printing/Wave Soldering
- SMT/Plugging
- Inspection (repair if necessary)
- AOI (repair if necessary)
- Transfer
Parts Assembly
- Manual Assembly
- Cleaning
- Wire Screw
- Inspection
- Repair If Necessary
Finalization
- Final Confirmation
- Packing
- Shiping
Technical Capabilities
OurPCB’s technical capabilities cover a wide range of 4 layer PCB specifications. We can produce boards with thicknesses from 0.4 mm to 3.2 mm. Our minimum trace width and spacing is 3/3 mil. We offer various surface finishes including HASL, ENIG, and immersion tin. Our standard FR-4 material is suitable for most applications, but we also work with high-frequency laminates. We can handle board sizes up to 20 x 24 inches.




Capabilities & Services
- One-stop PCBA Services (PCB Manufacturing + Components Sourcing + Assembly)
- SMT + THT Assembly
- BGA Rework
- 60,000 Chips/Hour
- Down to 01005/0210 Size
- Accuracy<±40μm
- Min. QFN Pin Width/Space: 0.15mm/0.25mm
- Min. QFN BGA Diameter/Space: 0.2mm/0.35mm
- Rigid, Flex, HDI, & High-speed Power Boards
- Up to 50 Layers
- 60GHz High Frequencies
- Min. Trace Width/Spacing: 2.5mil/2.5mil
- AOI, X-ray, ICT & FCT Testing
- Controlled Impedance
- ISO 9001, ISO 13485, ISO 14001, IATF 16949, IPC-A-610, UL Certified
- Automotive, Medical, & Military-grade PCBA Manufacturing


Mon-Fri: 24 hours,
Sat: 9am-6pm, GMT+8

Reach us at
[email protected]
24 hours online

+86-199-30589219
Mon-Fri: 24 hours,
Sat: 9am-6pm, GMT+8
4 Layers PCB Manufacturer | FAQs
What are the four layers of PCB stack-up?
The four layers of PCB stack-up are the top layer, inner layers, and bottom layer. A typical 4 layer PCB board includes signal, power, and ground planes for optimized performance. The 4 layer PCB power plane and 4 layer PCB ground plane ensure stable voltage and signal integrity. This multilayer PCB design improves high-speed capabilities and minimizes interconnect issues.
What is the 4 layer board fabrication process?
The 4 layer board fabrication process starts with PCB production and preparing copper layers. Inner layers are etched with copper foil for circuits, followed by lamination with dielectric. Vias connect internal layers to outer layers, ensuring reliable interconnect paths. Finally, the board thickness is refined for optimal 4-layer PCB output quality.
What are the 4 layer PCB design rules?
4 layer PCB design rules focus on 4 layer PCB design for manufacturability guidelines to prevent errors. Proper 4 layer PCB layout includes HDI techniques and careful placement of vias. The 4 layer PCB tutorial emphasizes high-frequency management and minimizing crosstalk between layers. Adhering to a PCB stack-up guide ensures that the layers of the PCB function efficiently.