Reliable from Prototype to Production
Standard, high-Tg, and low-loss FR-4 stackups with HDI microvias, ±5% impedance, and IPC-6012 Class 3 inspection keep multilayer boards on schedule and within budget.
APTPCB engineers recommend stackups spanning standard Tg 135 °C through high-Tg 175 °C and low-loss FR-4 for 10–25 Gbps signals, balancing cost, Tg, and Dk/ Df requirements.
We manage HDI microvias, sequential lamination, and controlled-dielectric spacing so BGAs, press-fit connectors, and impedance-controlled nets stay within tolerance.
Assembly support covers lead-free reflow, selective solder, conformal coating, and testing so FR-4 prototypes and volume builds run through one workflow.
Representative telecom, automotive, industrial, and consumer builds on FR-4 and high-Tg platforms.
Stackups are validated with impedance coupons, CAF testing, thermal stress, and AOI/X-ray inspections, ensuring FR-4 boards survive multi-reflow and harsh duty cycles.
Complete FR-4 solutions from quick-turn prototypes to Class 3 production with HDI, impedance, and mixed-signal routing.
Standard multilayer, high-Tg, low-loss, HDI, and rigid-flex hybrids based on FR-4 cores.
Select Tg/Df combinations, copper weights, and prepreg styles aligned to thermal and SI budgets.
Thermal shock, CAF, impedance coupons, AOI, X-ray, and flying-probe testing are available per lot to prove FR-4 boards meet automotive and aerospace expectations.
Stackup & DFx Review
Align Tg, Df, and copper counts with performance targets.
Imaging & Drilling
LDI imaging and tight drill control for microvias and fine traces.
Sequential Lamination
Controlled cycles for HDI and high-layer builds.
Plating & Fill
Copper fill for vias, via-in-pad, and buried structures.
Surface Finish & Assembly Prep
ENIG/ENEPIG/OSP plus bake schedules for lead-free reflow.
Testing & Validation
Impedance coupons, electrical tests, AOI/X-ray, and reliability data.
DFx reviews lock dielectric targets, copper balance, and impedance models before fab.
SPC-monitored lamination, drilling, plating, and inspection feed data back to design teams.
Layer Count
Sequential lamination for complex builds
Standard Line/Space
2/2 mil available on request
Impedance Control
TDR-verified per lot
Max Panel
Suitable for backplanes and LED panels
Flexible materials, proven reliability, and broad capability.
Standard through HDI and rigid-flex configurations.
Meets automotive/aerospace reliability standards.
Low-loss options + ±5% impedance for 25 Gbps designs.
12-hour expedite for urgent prototypes.
Optimized stackups lower BOM and assembly spend.
Complete testing packages accelerate approval.
Standardized lamination, bake, and inspection recipes reduce variance from prototype through mass production.
Coupons, TDR/eye or S-parameter data keep high-speed FR-4 launches predictable.
FR-4 platforms balance performance and cost while supporting HDI, high-speed, and high-Tg requirements.
Telecom infrastructure, automotive electronics, industrial automation, aerospace avionics, consumer and medical products all rely on FR-4.
Available in standard, high-Tg, and low-loss versions to match your environment.
Baseband, switch, and optical control cards.
ECUs, ADAS, battery management, and infotainment.
Robotics, PLC, and power controllers.
Mission computers, avionics, and radar control.
Imaging, monitoring, and diagnostic platforms.
Wearables, smart devices, and computing modules.
Instrumentation and load boards.
Server management and power distribution.
Handle Tg selection, impedance control, CAF avoidance, and HDI manufacturability with confidence.
Choosing between standard, high-Tg, and low-loss laminates impacts cost and performance.
Uncompensated stackups cause skew and reflection issues.
Dense vias and humidity can create conductive anodic filaments.
Overly aggressive design rules reduce yield.
Multiple reflow cycles require resin-filled vias and high-Tg materials.
Missing validation slows automotive/aerospace approval.
Material Playbooks
We recommend Tg/Df tiers and acceptable substitutes per product.
Impedance Modeling
Stackups are simulated and coupon data archived for ±5% control.
CAF Controls
Spacing, resin fill, and bake cycles mitigate CAF risk.
HDI Rule Guidance
Design kits specify drill sizes, capture pads, and tolerances.
Thermal Stress Testing
T260/T288 and thermal shock verify build robustness.
Innovation Roadmap
Emerging technologies shaping the future of manufacturing, signal integrity, and system integration.
01
Combining standard FR-4 with low-loss materials for cost-optimized high-speed designs.
02
Integrating resistors and capacitors within PCB layers to reduce footprint and improve signal integrity.
03
Modified semi-additive processes and machine learning for stackup design, impedance, and thermal performance.
04
Eco-friendly materials and processes reducing environmental impact without compromising performance.
Lock procurement strategy before design freezes—align laminate ladders, finish preferences, and MOQ per product family while making demand visible (forecast ladders, MP schedule, safety stock) so we can secure copper, resin, and specialty films at tiered pricing. When sourcing requirements, impedance specs, and qualification cadence are transparent, we can negotiate better supply terms and keep FR-4 unit costs predictable.
Map each program to A/B/C laminate sets with published lead time, MOQ, and alternates.
Book shared sourcing reviews (BOM + AVL) so component procurement stays synced with board fab slots.
Run DFx checkpoints with sourcing present to agree on stackups, finishes, and alternates before release.
Share 3–6 month demand ladders so we can preload copper, prepregs, and films to avoid spot buys.
Combine SKUs per dispatch lane to hit freight and customs breakpoints.
Maintain shared dashboards for copper, laminate, and finish lead times so PO release dates stay ahead of constraints.
Use quarterly volume commitments to unlock rebate tiers on FR-4 cores, surface finish chemistry, and solder mask.
Plan PPAP/FAI lots across programs so reliability coupons and reports are reused.
Quality, environmental, and industry credentials supporting reliable manufacturing.
Quality management across multilayer FR-4 production.
Environmental compliance for plating, etching, and lamination.
Medical PCB traceability and cleanliness requirements.
Automotive PPAP, SPC, and CAPA coverage.
Aerospace process control and documentation.
Performance specification for rigid PCBs.
Safety and flammability certifications.
Hazardous substance compliance.
Quality & Cost Console
Unified dashboard connecting HDI quality checkpoints with the economic levers that compress cost.
Process & Reliability
Stack-Up Validation
Pre-Lamination Strategy
• Rotate outlines, mirror flex tails
• Share coupons across programs
• Reclaim 5-8% panel area
Registration
Registration
Laser Metrology
• Online laser capture
• ±0.05 mm tolerance band
• Auto-logged to SPC
Testing
Testing
Electrical Test
• TDR coupons per panel
• IPC-6013 Class 3
• Force-resistance drift logged
Integration
Integration
Assembly Controls
• Nitrogen reflow
• Inline plasma clean
• 48h logistics consolidation
Architecture
Architecture
Cost Strategy
• Balance cost vs performance
• Standardize on common cores
• Low-loss only on RF layers
Microvia Planning
Microvia Planning
Via Cost Savings
• Avoid stacked microvias
• Share backdrill tools
• Minimize fill costs
Utilization
Utilization
Panel Optimization
• Rotate for nesting efficiency
• Share test coupons
• Standardize tooling
Execution
Execution
Supply Chain Levers
• Pool low-loss material
• Dual-source laminates
• Match finish to need
Share stackups, impedance targets, and schedule—we reply with DFx notes, cost, and lead time within one business day.
Common questions about materials, impedance, and reliability.
