Our 2-48L Multilayer FR4 PCBs Board with Arrayed Circuit Units is a matrix panelized multilayer circuit board optimized for automatic SMT assembly and mass manufacturing.
Product Overview
Our 2–48L Multilayer FR4 PCB with Arrayed Circuit Units is a panelized multilayer circuit board, where multiple identical circuit units are arranged in matrix on one FR4 master panel. The array design includes tooling rails, fiducial alignment marks and separation routes (V-cut or tab breakaway).
It is specially developed for automated SMT, ICT testing and mass manufacturing. We can customize the quantity of array units, panel size, separation method and stack-up. All sub-units maintain uniform impedance, trace width and thickness tolerance, avoiding performance inconsistency between individual boards. It is widely adopted by customers with large batch orders for computing, industrial control, automotive and IoT modules.
Core Points
🟩 2–48 layers customizable FR4 multilayer structure, support standard FR4, high-Tg & halogen-free FR4 laminate
🟩 Optimized arrayed panel layout, identical circuit units on one panel, compatible with automatic SMT mass assembly
🟩 Built-in fiducial marks, tooling holes, V-cut / tab-routing for clean depaneling without circuit damage
🟩 Consistent electrical performance across all array units, tight impedance control for high-speed differential signals
🟩 Greatly improve material utilization, reduce per-unit cost and shorten cycle time for mass production
🟩 Support blind/buried vias, microvia HDI design, fine BGA layout for high-density computing modules
🟩 Strict warpage control, low CTE stack-up, stable performance under repeated thermal cycling
🟩 IPC Class 2 / Class3 available, RoHS & REACH compliant, prototype sampling and volume production supported
Performance Characteristics
- Uniform unit consistency: Same etching, lamination and plating condition for every array circuit unit, stable electrical parameters
- Excellent thermal reliability: High-Tg FR4 option resists delamination and layer separation during multiple reflow cycles
- Good EMI suppression: Complete ground/power plane stack design, suppress crosstalk and electromagnetic interference for high-speed digital signals
- Low warpage: Balanced copper distribution and symmetric stack-up design, control board warp for smooth SMT pick & place
- High structural stability: FR4 dielectric with low moisture absorption, suitable for long-term running in industrial and vehicle environments
- Scalable high-speed capability: Support PCIe, DDR, USB4 high-speed signal routing with controlled impedance
Manufacturing & Process Advantages
- Professional array DFM review before production: optimize unit arrangement, rail width, fiducial position and copper balance
- LDI laser direct imaging for fine traces, guarantee uniform line width for every circuit unit in the panel
- Symmetric lamination technology for high-layer-count 24~48L boards, minimize internal stress and warpage
- Precise V-cut depth control, ensure easy breaking without scratching traces and pads
- 100% AOI inspection + X-ray inspection for inner layers + electrical open/short test for full panel
- Flexible depaneling solution according to customer SMT line requirement
- Step-and-repeat compensation control, reduce alignment deviation between array units
- Support selective copper balancing to prevent thickness difference and impedance shift
Typical Application Scenarios
- Server, network switch, high-speed computing motherboard sub-modules
- Industrial control PLC, sensor array module, automated test fixture board
- Automotive electronics, BMS and vehicle control circuit
- IoT mass production modules, communication gateway circuit
- Medical electronic mass batch circuit board
- Consumer mass production controller, power management unit
Company Brief
We specialize in custom multilayer FR4 PCB, HDI, high-frequency RF board, rigid-flex, FPC and metal core MCPCB. We have mature manufacturing capacity for high-layer 2–48L panelized array PCBs, rich experience in SMT array panel design, stack-up optimization and warpage control.
We provide full DFM review, prototype fast sampling and large batch stable mass production. Our engineering team helps customers optimize array layout to reduce unit cost and improve assembly yield. All products follow IPC international standards and RoHS / REACH compliance, serving global customers in industrial, computing, automotive, medical and IoT industries.
