4 Layer PCB Manufacturer
Get custom 4-layer PCBs manufactured for denser routing, stable signal return paths, and efficient power distribution. LZJPCB supports custom FR4 stackups, controlled impedance, precision via plating, and PCB assembly from prototype to mass production.
- Custom 4-Layer FR4 Stackups
- Ground & Power Plane Options
- Controlled Impedance & Plated Vias
- 100% Electrical Testing & PCBA
4-Layer PCB Stackup
Get your 4-layer PCB manufactured with a stackup tailored to your signal routing, power distribution, impedance, and board thickness requirements.
4-Layer PCB Stackup Design
Improve signal routing and power distribution with a 4-layer stackup designed for your circuit's electrical and manufacturing requirements.
- Signal / Ground / Power / Signal
- Signal / Ground / Ground / Signal
- Custom FR4 core, prepreg & copper thickness
- Stackup & DFM engineering support
4-Layer PCB Thickness & 1.6 mm Stackup
Fit your 4-layer PCB into your enclosure and connector assembly with custom thickness, copper layers, and dimensional control.
- Standard 1.6 mm finished thickness
- Custom board thickness & tolerances
- FR4 core, prepreg & copper stackup
- Connector fit & dimensional inspection
Ground, Power & Controlled Impedance
Maintain stable signal transmission and power distribution with continuous reference planes, calculated trace geometry, and controlled impedance manufacturing.
- Dedicated ground & power plane options
- Continuous signal return paths
- 50Ω single-ended & 90Ω/100Ω differential targets
- Controlled impedance testing & verification
4-Layer PCB Design & DFM Support
Reduce manufacturing delays and costly revisions with engineering reviews of your 4-layer PCB layout, vias, copper clearances, and fabrication files before production.
Identify PCB Manufacturing Issues Before Production
Your stackup, layer function, via transitions, and fabrication files are reviewed before production to reduce costly revisions and manufacturing delays.
- Stackup & Material Review — Check layer structure, dielectric thickness, and copper weight.
- Trace & Clearance Checks — Verify trace widths, spacing, and copper-to-edge clearances.
- Via & Drill Review — Check hole sizes, annular rings, and plating requirements.
- Ground & Return Path Review — Identify plane splits and interrupted signal return paths.
- BGA Fan-Out & Assembly Review — Review fine-pitch routing, via placement, and solder mask openings.
- Manufacturing File Verification — Check Gerber, ODB++, drill files, stackup, and fabrication drawings.
4-Layer PCB Applications
Get custom 4-layer PCBs manufactured for your control, communication, power, and embedded systems with dense routing, reliable signal connections, and precision assembly.
Industrial Controllers & Interface Boards
Fit MCUs, sensors, I/O circuits, and connectors into compact controllers with multilayer routing, stable ground references, and SMT/THT assembly.
Connected Devices & Gateways
Support Ethernet, wireless modules, and high-speed interfaces with controlled-impedance routing, continuous signal return paths, and precision assembly.
Power Supply Control Boards
Integrate power management and control circuits with optimized copper distribution, electrical isolation, and thermal management.
Compact Embedded Systems
Fit processors, memory, BGA components, and multiple interfaces into limited space with high-density routing and precision SMT assembly.
4-Layer PCB Quality Control & Testing
Reduce hidden defects and assembly failures with inner-layer inspection, lamination checks, plated-hole verification, and 100% electrical testing.
Quality Checks for Your 4-Layer PCBs
Verify your 4-layer PCB's inner copper patterns, lamination quality, plated connections, and electrical integrity through manufacturing inspections before delivery.
- Material & Stackup Verification — Check FR4 materials, core/prepreg thickness, copper weight, and layer structure.
- Inner-Layer AOI Inspection — Detect inner-layer opens, shorts, and copper pattern defects before lamination.
- Lamination & PTH Inspection — Verify layer alignment, bonding quality, hole-wall copper, and interlayer connections.
- Controlled Impedance Testing — Measure specified impedance targets using test coupons and approved tolerances.
- 100% Electrical & Final Inspection — Test continuity and isolation; inspect dimensions, solder mask, and surface finishes.
4-Layer PCB Cost & Pricing
Your 4-layer PCB cost depends on board size, materials, stackup, copper weight, manufacturing complexity, and order quantity. Compare the key pricing factors below to optimize your production costs.
What Affects Your 4-Layer PCB Price?
Get an accurate quote based on your actual PCB specifications, production quantity, and delivery requirements.
- Board Size & Panelization — PCB dimensions, panel utilization & material usage
- PCB Materials — Standard FR4, High-Tg FR4 & specialty laminates
- Board Thickness & Stackup — Core, prepreg, finished thickness & tolerances
- Copper Weight — Inner & outer copper thickness requirements
- Trace, Drill & Via Complexity — Fine traces, drill sizes & via density
- Controlled Impedance — Impedance tolerance, test coupons & verification
- Surface Finish — HASL, ENIG, OSP & other finish options
- Order Quantity & Lead Time — Prototype, volume production & expedited delivery
Why Choose LZJPCB as Your 4-Layer PCB Manufacturer?
With 20 years of PCB manufacturing experience, 50+ engineers, and four production bases, LZJPCB supports your 4-layer PCB projects from prototype to mass production.
Engineering Expertise & Scalable 4-Layer PCB Manufacturing
Get your 4-layer PCBs manufactured and assembled with engineering support, reliable production processes, and capacity for repeat orders.
- Experienced PCB Engineering Team — Your stackup, impedance, and manufacturing requirements are supported by 50+ engineers to reduce production risks.
- PCB Manufacturing & Assembly in One Place — Get your 4-layer PCBs fabricated, components sourced, assembled, and tested through one supplier.
- Production Capacity for Repeat Orders — Move from prototypes to volume production with four production bases, consistent specifications, and controlled quality.
4-Layer PCB Case Studies
Explore how 4-layer PCB manufacturing addresses complex routing, power distribution, and high-density assembly requirements.
Industrial Control 4-Layer PCB
Design a compact industrial PLC controller with dedicated power and ground planes, stable signal routing, and reliable SMT assembly.
Custom 4-layer stackup with dedicated power and ground planes, DFM-reviewed trace layout, and 100% electrical testing.
Passed functional tests on 1,200 units with consistent stackup quality and controlled impedance verification.
High-Density BGA 4-Layer PCB
Route 0.5mm pitch BGA components for a compact IoT gateway within a 4-layer stackup with tight trace/space requirements.
BGA fan-out optimization with 4/4mil trace/space, via-in-pad review, and inner-layer AOI before lamination.
Passed inner-layer AOI and X-ray inspection on 600 boards with verified BGA solder joint quality.
Get a 4-Layer PCB
Manufacturing Quote
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Frequently Asked Questions About 4-Layer PCB
Layer count should solve a design constraint, not create extra cost. Compare routing, reference planes and manufacturing tradeoffs before requesting your stackup review.
2-Layer vs 4-Layer PCB
If a two-layer board is running out of routing room or forcing broken return paths, four layers may remove that risk. Compare the design need first, then choose the lowest layer count that preserves routing and reference continuity.
- Decision
- 2-Layer PCB
- 4-Layer PCB
- Routing density
- Low to moderate
- Moderate to high
- Internal planes
- None
- Two inner layers available
- EMI / return paths
- Depends on surface layout
- Continuous internal references possible
- Manufacturing cost
- Lower construction cost
- Higher, with added routing and plane control
4-Layer vs 6-Layer PCB
If four layers cannot close BGA escape, high-speed references or multiple power regions without compromises, six layers provide more allocation freedom. Stay with four when its two outer routing layers and two internal references already solve the design.
- Decision
- 4-Layer PCB
- 6-Layer PCB
- Layer allocation
- Limited but efficient
- More signal / plane combinations
- Routing capacity
- Moderate to high
- Higher density and escape options
- Reference control
- Depends strongly on chosen stackup
- More flexibility for adjacent ground references
- Cost
- Lower layer-build cost
- Higher layer-build and lamination cost
What is a typical 4-layer PCB stackup?
Is every 4-layer PCB 1.6 mm thick?
Can a 4-layer PCB support BGA components?
How is a 4-layer PCB manufactured?
Send your Gerber files, stackup requirements, material, and quantity. Receive a manufacturing scope with fixed pricing and lead time.
