High-Quality Multilayer Circuit Boards for Complex Electronic Applications
Get a Free QuoteAs a leading 4 layer pcb manufacturer, we specialize in producing high-quality multilayer printed circuit boards for diverse industries. Our advanced manufacturing capabilities ensure superior signal integrity, optimal electromagnetic shielding, and reliable performance for your most demanding electronic applications.
Our 4 layer PCBs are engineered to meet the rigorous demands of modern electronics, offering enhanced routing density and improved electrical performance. With dedicated power and ground planes, these boards provide excellent noise reduction and stable power distribution, making them ideal for high-speed digital circuits, RF applications, and complex embedded systems.
We utilize state-of-the-art manufacturing processes and maintain strict quality control throughout production. Our facility is equipped with advanced automated optical inspection systems, electrical testing equipment, and environmental testing chambers to ensure every board meets industry standards and your specifications.
Our 4 layer PCBs serve a wide range of industries and applications, providing the performance and reliability required for mission-critical electronics.
Engine control units, dashboard systems, safety sensors, and infotainment systems requiring high reliability and EMI protection in harsh environments.
Diagnostic equipment, patient monitoring systems, imaging devices, and portable medical instruments demanding precision and regulatory compliance.
PLCs, motor controllers, automation equipment, and industrial IoT devices requiring robust performance in challenging industrial settings.
Network routers, base stations, signal processors, and communication modules needing high-frequency performance and signal integrity.
Smartphones, tablets, wearables, smart home devices, and entertainment systems requiring compact designs and reliable operation.
Avionics, navigation systems, flight control computers, and satellite communications requiring aerospace-grade quality and reliability.
LED drivers, intelligent lighting controllers, and power management circuits with excellent thermal dissipation capabilities.
Switching power supplies, DC-DC converters, battery management systems, and power distribution units requiring efficient power handling.
Smart sensors, wireless modules, edge computing devices, and connected systems demanding low power consumption and reliable connectivity.
Access control systems, surveillance cameras, alarm panels, and biometric readers requiring secure and reliable circuit designs.
Professional audio processors, amplifiers, mixing consoles, and high-fidelity audio systems needing superior signal quality and low noise.
Robot controllers, servo drives, sensor interfaces, and autonomous system boards requiring precise control and fast processing.
4 layer PCBs offer significant advantages over simpler board designs, making them the optimal choice for advanced electronic applications.
Dedicated ground and power planes reduce signal interference and improve high-frequency performance for cleaner, more reliable signal transmission.
Internal ground planes provide effective electromagnetic shielding, reducing susceptibility to external interference and minimizing emissions.
Four layers allow for more complex routing patterns, enabling higher component density and more sophisticated circuit designs in smaller form factors.
Better layer separation and ground plane isolation minimize crosstalk between signal traces, essential for high-speed digital and sensitive analog circuits.
Internal copper planes help dissipate heat more effectively, improving reliability and extending component lifespan in power-intensive applications.
Higher routing density allows for smaller board dimensions while maintaining full functionality, crucial for space-constrained applications.
Our 4 layer PCB manufacturing capabilities support a wide range of specifications to meet diverse project requirements.
| Specification | Standard | Advanced |
|---|---|---|
| Board Thickness | 1.6mm | 0.4mm - 3.2mm |
| Copper Weight | 1oz (35μm) | 0.5oz - 6oz |
| Minimum Trace Width | 5 mil (0.127mm) | 3 mil (0.075mm) |
| Minimum Spacing | 5 mil (0.127mm) | 3 mil (0.075mm) |
| Minimum Hole Size | 0.3mm | 0.15mm |
| Surface Finish | HASL, Lead-Free HASL | ENIG, OSP, Immersion Silver/Tin |
| Soldermask Color | Green | Green, Red, Blue, Black, White, Yellow |
| Silkscreen Color | White | White, Black, Yellow |
| Base Material | FR-4 TG130-140 | FR-4 TG150-180, Rogers, Aluminum |
| Lead Time | 5-10 days | 24-48 hours (express) |
Ordering professional 4 layer PCBs is straightforward with our streamlined process. Follow these steps to get your boards manufactured quickly and efficiently.
Export your PCB design as Gerber files (RS-274X format), including all four copper layers, soldermask, silkscreen, and Excellon drill files. Create a detailed fabrication drawing specifying stackup configuration, board dimensions, material requirements, and any special instructions.
Choose your board specifications including material type (standard FR-4 or high-performance materials), total thickness, copper weight for each layer, surface finish (HASL, ENIG, OSP, etc.), soldermask color, silkscreen color, and quantity needed. Consider your application requirements when making these selections.
Submit your design files and specifications through our online quote system or via email. Our engineering team will review your files and provide a detailed quotation including unit pricing, setup fees, lead time estimate, and any recommendations for design optimization or cost reduction.
Receive and review our Design for Manufacturing (DFM) report, which identifies any potential manufacturing issues or areas for improvement. Our engineers may suggest modifications to enhance manufacturability, reduce costs, or improve performance. Approve the final design and confirm your order.
Your boards enter production following our proven manufacturing process. Each board undergoes rigorous quality control including automated optical inspection (AOI), electrical testing for continuity and isolation, dimensional verification, and visual inspection. Controlled impedance testing is performed if specified.
Completed PCBs are carefully packaged using anti-static materials and protective padding to prevent damage during shipment. Boards are shipped via your preferred courier with full tracking information. Quality documentation including test reports and certificates of compliance are included with your order.
Find answers to common questions about 4 layer PCB manufacturing, specifications, and ordering process.
A 4 layer PCB is a printed circuit board consisting of four conductive copper layers separated by insulating material. It typically includes two inner layers and two outer layers, providing enhanced signal routing capabilities and better electromagnetic interference shielding compared to single or double-layer boards.
4 layer PCBs offer several advantages including improved signal integrity, better EMI shielding, increased routing density, reduced crosstalk, dedicated power and ground planes, smaller board size, and better thermal management. They are ideal for complex electronic designs requiring high performance.
Standard lead time for 4 layer PCB manufacturing typically ranges from 5 to 10 business days, depending on specifications and quantity. Express services can reduce this to 24-48 hours for urgent projects, while complex designs may require additional time.
Common materials include FR-4 for standard applications, high-TG FR-4 for elevated temperature environments, Rogers materials for high-frequency applications, and aluminum-backed substrates for LED applications. The choice depends on thermal, electrical, and mechanical requirements.
Standard 4 layer PCB manufacturing supports minimum trace widths of 4-5 mils (0.1-0.125mm), while advanced capabilities can achieve 3 mils or less. The actual minimum depends on copper weight, layer configuration, and manufacturer capabilities.
4 layer PCB costs vary based on size, quantity, material, surface finish, and specifications. Small prototype quantities may cost $50-200, while production volumes benefit from significant economies of scale. Request a quote for accurate pricing based on your specific requirements.
Common 4 layer stackups include signal-ground-power-signal and signal-power-ground-signal configurations. The choice depends on signal integrity requirements, power distribution needs, and EMI considerations. Custom stackups can be designed for specific applications.
Available surface finishes include HASL (Hot Air Solder Leveling), Lead-Free HASL, ENIG (Electroless Nickel Immersion Gold), OSP (Organic Solderability Preservative), Immersion Silver, and Immersion Tin. Selection depends on assembly method, shelf life, and environmental requirements.
Yes, 4 layer PCBs are well-suited for high-frequency applications when designed with appropriate materials like Rogers substrates, controlled impedance traces, and proper stackup configuration. They can effectively support RF, microwave, and high-speed digital signals.
Professional manufacturers follow IPC-A-600 for acceptability standards, IPC-6012 for rigid PCB qualification, ISO 9001 for quality management, and may hold certifications like UL, RoHS compliance, and IATF 16949 for automotive applications.
Standard formats include Gerber files (RS-274X), Excellon drill files, IPC-2581, or ODB++ formats. A complete fabrication package should include all copper layers, soldermask, silkscreen, drill files, and a detailed fabrication drawing with stackup information.
Standard testing includes electrical testing (continuity and isolation), visual inspection, dimensional verification, impedance testing for controlled impedance boards, microsectioning for layer registration, and peel strength testing. Advanced testing may include thermal cycling and reliability testing.
Ready to start your 4 layer PCB project? Contact us for a free quote and expert consultation.
Email us for immediate assistance:
Lisa@4pcba.com