Close-up of a dark navy PCB capacitor array with gold pads and fine-pitch routing

PCB TECHNOLOGY

Advanced PCB technologies for HDI, RF, flex, rigid-flex, via filling and specialist material requirements in complex PCB designs.

Exception PCB manufactures high-technology PCBs using advanced processes that support electrical performance, thermal stability, mechanical reliability and manufacturability.

Our capabilities include HDI, RF PCBs, flex and rigid-flex circuits, copper and resin via filling, and advanced PCB materials. Each technology is managed within a controlled UK manufacturing environment, helping engineering teams move from concept to production with greater confidence.

Find the right PCB technology

Search our technology pages to explore HDI, RF PCBs, flex and rigid-flex, via filling, advanced materials and supporting technical resources.

Technician holding a complex green rigid-flex circuit board panel with amber flexible interconnect extensions.

FLEX & FLEX-RIGID PCB CAPABILITY

Flex and rigid-flex PCB construction enables compact packaging, dynamic movement, and reduced interconnect complexity within advanced electronic assemblies. 

Exception PCB manufactures flex and rigid-flex designs using controlled lamination, polyimide material systems, and precision registration to support demanding applications where reliability and space optimisation are critical. 

These constructions are commonly used where traditional rigid boards introduce assembly constraints or mechanical limitations. 

FLEX & RIGID-FLEX PCB CAPABILITY
Macro view of a dark, high-density PCB showing precise gold pad layouts and trace routing.

HDI PCB CAPABILITY

High Density Interconnect (HDI) manufacturing supports compact multilayer architectures where routing density and fine-pitch component integration exceed conventional PCB limitations. 

Exception PCB manufactures HDI structures using laser-drilled microvias, sequential lamination, precision registration, and advanced via architectures. 

Engineering oversight ensures HDI structures remain manufacturable while maintaining electrical stability and long-term reliability. 

HDI PCB CAPABILITY
Macro close-up of ENIG gold-plated pads and precision circuit trace routing on a white substrate RF PCB, showing the surface finish quality and high-density layout of Exception PCB's RF manufacturing capability.

RF PCB CAPABILITY

RF PCB manufacturing requires stable materials, controlled impedance, and precise process control to support predictable high-frequency performance. 

Exception PCB manufactures RF and microwave PCB structures using low-loss materials, tightly controlled dielectric thicknesses, and multilayer stack-up engineering designed for signal integrity. 

RF capability supports applications where electrical consistency is critical. 

RF PCB CAPABILITY
Exception PCB operator loading a flexible printed circuit board panel into an ESI laser micro via drill processing system.

ADVANCED PCB MATERIALS

Material selection directly affects electrical performance, thermal behaviour, and manufacturability. 

Exception PCB supports a wide range of advanced PCB materials, including FR4 variants, polyimide, PTFE, and hybrid RF constructions. 

Engineering guidance helps ensure material systems remain aligned with stack-up architecture and production stability.

ADVANCED MATERIALS CAPABILITY
Wide landscape view of an automated electrochemical processing line inside the manufacturing plant.

COPPER VIA FILL

Copper via filling supports dense multilayer designs where thermal conductivity, structural integrity, and via-in-pad architectures are required. 

Exception PCB manufactures copper-filled vias using controlled plating processes that promote consistent deposition and stable interconnect performance. 

Integrated inspection and microsection validation help ensure via integrity throughout manufacture. 

COPPER VIA FILL CAPABILITY
Exception PCB technician in a white glove holding a green printed circuit board panel with four individual circuits.

RESIN VIA FILL

Resin via filling provides planar surfaces for assembly-critical PCB designs where open vias may affect soldering, routing density, or structural stability. 

Exception PCB integrates resin via filling within a controlled drilling, filling, curing, and planarisation process to support reliable multilayer construction. 

Engineering review ensures filled via structures remain compatible with downstream assembly and long-term reliability requirements. 

RESIN VIA FILL CAPABILITY
Fanned out image of the Exception PCB's capabilities list to support design for manufacture

DOWNLOAD OUR PCB CAPABILITIES

Our capabilities list covers build parameters, tolerances, surface finishes, and drilling specifications across all PCB construction types. Download it to check your design requirements or prepare for a DFM review.

Download our capabilities list

Ready to discuss your project?

Early engagement helps reduce risk and improve outcomes. Whether you are at concept stage, preparing for validation, or planning manufacture, our engineers are available to discuss requirements and offer practical guidance.