Ultra High-Density

8+ Layer Flexible PCB Solutions

The pinnacle of flexible circuit technology. Ultra-high-density interconnects with any-layer via capability for the most advanced electronic systems in aerospace, defense, and medical applications.

8+ Layer Flex PCB

Eight layers and beyond represent the cutting edge of flexible circuit technology. These ultra-high-density flex PCBs serve applications where no other interconnect technology can meet the requirements for routing density, electrical performance, and mechanical flexibility combined.

At 8+ layers, flex PCBs enable truly three-dimensional circuit design. Any-layer via technology allows interconnection between any two layers without consuming routing channels on intermediate layers. Multiple power domains, extensive shielding, and complex high-speed interfaces can all coexist in a flexible format.

Our advanced manufacturing facility is equipped for the most demanding multilayer flex requirements. Sequential lamination, laser drilling, precision registration, and rigorous process control ensure every layer meets specifications in these complex constructions.

Key Features

Any-Layer Interconnect

ALIVH (Any Layer Interstitial Via Hole) technology enables via connections between any adjacent layers. Maximum routing flexibility for complex designs.

Ultra-High Density

Layer counts from 8 to 16+ enable routing densities impossible with fewer layers. Support for the finest pitch components and highest I/O counts.

Complex Power Architecture

Multiple dedicated power and ground planes support complex power distribution networks. Ideal for mixed-signal and high-current applications.

Premium Materials

High-performance polyimide and specialty dielectrics selected for demanding environments. Space-grade and high-reliability options available.

Technical Specifications

Layer Count8-16+ Layers
MaterialHigh-Performance Polyimide
Copper Weight0.5oz - 2oz
Min. Line Width0.05mm (2 mil)
Min. Line Space0.05mm (2 mil)
Total Thickness0.5mm - 1.5mm
Via TypesAny-Layer Via, ALIVH
Impedance Control±5% Tolerance
HDI CapabilityAdvanced HDI/ELIC
Lead Time15-20 days (prototype)

Applications for 8+ Layer Flex

8+ layer flex PCBs serve the most demanding applications where other technologies cannot meet requirements.

Space Systems

Deep space probes, satellite buses, and launch vehicle electronics use 8+ layer flex for complex systems in extreme environments with no margin for failure.

Advanced Medical Devices

Neural interfaces, high-channel-count imaging systems, and implantable devices with complex functionality require the density only 8+ layers can provide.

Military & Defense

Advanced radar, electronic warfare, and secure communication systems use 8+ layer flex for mission-critical reliability with complex functionality.

High-Performance Computing

Advanced AI accelerators and high-speed memory interfaces use 8+ layer flex for maximum bandwidth in compact packages.

Semiconductor Test

Probe cards and test interfaces for advanced semiconductor nodes require the signal integrity and density of 8+ layer flex.

8+ layer flex PCB applications

Manufacturing Complexity

8+ layer flex manufacturing requires the most advanced processes and tightest controls.

Sequential Lamination

Multiple lamination cycles build up the layer structure. Each cycle must maintain precise registration and bond quality.

Registration Control

Layer-to-layer registration becomes critical with many layers. Advanced imaging and drilling equipment maintain alignment across the full stackup.

Via Formation

Laser drilling, mechanical drilling, and various via formation techniques combine to create the required interconnect structures.

Thickness Management

Total thickness must be controlled while maintaining required dielectric spacing for impedance control. Process optimization balances these requirements.

Quality Verification

100% electrical testing, cross-section analysis, and reliability qualification validate manufacturing quality on every lot.

Design Considerations

Designing 8+ layer flex requires partnership between design engineering and manufacturing.

Early Engagement

Engage our engineering team early in the design process. We help optimize stackup, via strategy, and layer assignment before design completion.

Stackup Optimization

Layer count, material selection, and dielectric spacing all impact manufacturability. We work iteratively to achieve your requirements while maintaining yield.

Signal Integrity Planning

Complex stackups require careful impedance planning. We provide impedance models and stackup recommendations for your target values.

Thermal Considerations

High-density designs may require thermal management attention. Copper distribution and thermal via strategies are part of the design review.

Reliability Requirements

Define reliability requirements early. Material selection and design rules are influenced by environmental and lifetime requirements.

Use Cases

Mars Rover Science Instrument

Mars Rover Science Instrument

16-layer rad-hard flex for space exploration instrument. NASA Class 3 workmanship with full lot traceability for mission-critical reliability.

Neural Interface Array

Neural Interface Array

12-layer biocompatible flex for 1024-channel neural recording. Ultra-fine features with integrated amplification and multiplexing.

Phased Array Radar Module

Phased Array Radar Module

10-layer flex connecting 256-element phased array. Controlled impedance with integrated power distribution and thermal management.

Why Choose FlexiPCB

Layer counts from 8 to 16+ with any-layer interconnect
AS9100D and ISO 13485 certified manufacturing
Advanced HDI capability including ELIC technology
Expert engineering support from design through production
Proven track record in aerospace and medical applications
Comprehensive reliability testing and qualification support

Frequently Asked Questions

What is the maximum layer count you support?

We support layer counts up to 16 layers in all-flex construction. Higher layer counts are available in rigid-flex configurations. Contact us to discuss your specific requirements.

What is the typical lead time for 8+ layer flex?

Prototype lead time is typically 15-20 business days for standard designs. Complex HDI structures or special materials may require additional time. We provide detailed schedules during quotation.

How do you ensure quality in complex multilayer flex?

Multiple inspection and test points throughout manufacturing validate each process step. 100% electrical testing, cross-section analysis on sample basis, and comprehensive documentation ensure quality.

What certifications support 8+ layer flex production?

Our manufacturing is supported by AS9100D for aerospace, ISO 13485 for medical devices, and ISO 9001 for general quality management. NADCAP accreditation is available for special processes.

Can you support prototype quantities for complex designs?

Yes, we support prototype quantities from 5 pieces. NRE costs cover tooling and process setup for complex multilayer designs. We provide prototype-to-production transition support.

Related Solutions

Push the Boundaries with 8+ Layer Flex

The most advanced flexible circuit technology for the most demanding applications. Our expert team is ready to support your 8+ layer flex PCB project.