Helen Frankenthaler PCB Circuit Board R&D Center

Isola High Power PCB for Smart Home

HDI PCB Manufacturer | High Density Interconnect PCB

HDI PCB: Any layer hdi pcb, Ultra hdi pcb

High frequency low loss PCB material Low loss high speed PCB materials R-5775, R-5785, R-5795, TU-872 SLK , TU-872 SLK SP, TU 933+, I-Tera MT40, Astra MT77, Tachyon 100G material EM-888, EM-888(S), EM-888(K), EM-526, EM-528, EM-528K, IT-968, IT-968 SE, IT-988G, IT-988G SE material High-Density Interconnect, or HDI PCB, are using microvias , via in pads and smaller trace/space to provide a higher signal density and superior signal integrity

High-Quality HDI PCB Solutions | High Density Interconnect & Microvia Technology

Add Your Heading Text Here

Add Your Heading Text Here

What is HDI PCB & Microvia Technology?

HDI High Density Interconnect Basics

High Density Interconnect (HDI) technology represents a cutting-edge evolution in printed circuit board manufacturing, leveraging microvias to pack far more components into a given footprint compared to conventional PCB architectures. Our HDI PCBs slash overall board dimensions by 30–50% while boosting signal integrity—a game-changing advantage for compact electronic systems such as 5G communication modules and precision medical instruments.

HDI Microvia & Staggered Microvias

Our HDI microvia capabilities cover blind, buried, and staggered microvias—the latter being the most sophisticated option for intricate HDI layouts. Standard microvias in our PCBs feature a diameter of 0.1mm or smaller, while staggered microvias are offset across successive layers. This stacking method maximizes interconnect density without sacrificing the structural robustness of the board. Every microvia-equipped PCB we produce adheres strictly to IPC-6012 and IPC-2226 standards, guaranteeing long-term reliability in demanding applications.

Our HDI PCB Product Range

2N2 & Multilayer HDI PCB Board

We provide multilayer HDI PCB solutions spanning from 4-layer to 100-layer configurations, with the 2N2 HDI PCB emerging as our best-selling entry-level choice. Characterized by its 2-core, 2-prepreg structure, this board supports 2/2mil line width and spacing, paired with 0.1mm microvias. It strikes the perfect balance between performance and cost-effectiveness, making it suitable for consumer electronics and industrial control systems alike. All our multilayer HDI PCBs utilize high-Tg FR-4 or Rogers materials to enhance thermal stability and withstand extreme operating temperatures.

Anylayer HDI PCB (Any Layer HDI)

Our anylayer HDI PCB—also referred to as any layer HDI technology—is a high-end offering that enables direct connections between any two layers via laser-drilled microvias. This eliminates the need for buried vias in most scenarios, pushing component density 50% higher than traditional HDI alternatives. With tight impedance control of ±3%, this technology is tailored for high-frequency applications such as radar systems and satellite communication equipment.

HDI Rigid Flex PCB Solutions

Our HDI rigid-flex PCBs integrate high-density interconnect technology with flexible circuit substrates, merging the structural stability of rigid HDI boards with the bendable versatility of flexible PCBs. Microvias are seamlessly incorporated into both rigid and flexible sections, and the boards achieve a minimum bending radius of 0.5 times the board thickness. This makes them ideal for use in automotive ADAS sensors and implantable medical devices where space and flexibility are critical.

HDI PCB Manufacturing Process

HDI PCB Fabrication Workflow

Our HDI PCB production process adheres to rigorous IPC standards and consists of 5 core stages:

  • High-precision laser drilling to create microvias and staggered microvias with pinpoint accuracy;
  • Plasma desmear treatment to remove resin residue and ensure reliable via conductivity;
  • Sequential lamination for assembling complex multilayer HDI PCB structures;
  • Electroless Nickel Immersion Gold (ENIG) surface finishing to optimize solderability and corrosion resistance;
  • 100% X-ray inspection to verify via quality and detect potential defects before shipment.

Our production lines cater to both prototype orders (1–100 units) and large-scale mass production (100,000+ units), with lead times ranging from 7 to 15 days.

HDI Board Design Guidelines

Our HDI design engineering team offers free Design for Manufacturing (DFM) consulting services for all HDI PCB projects. Key design guidelines we recommend include:

  • Maintain a minimum microvia diameter of 0.1mm to ensure manufacturability and reduce production costs;
  • Adopt staggered microvias for high-density PCB designs to maximize space utilization;
  • Reserve a minimum spacing of 0.2mm between microvias and surface-mounted components to prevent soldering issues.

We also provide standardized HDI board design templates, which can cut design revision cycles by up to 30%.

Why Choose Our HDI PCB Services

Certified HDI PCB Manufacturer

As a professional HDI PCB manufacturer and supplier, we hold a suite of industry-leading certifications, including IPC-A-600, IPC-610, and ISO 13485 (for medical device applications). Our production facilities are also compliant with IATF 16949 automotive industry standards. We maintain full traceability across the entire production chain, from raw material procurement (Rogers/FR-4 substrates) to final product delivery. Our engineering team boasts over 10 years of specialized experience in HDI technology, focusing on high-reliability sectors such as aerospace, medical, and automotive.

HDI PCB Cost & Quotation Factors

The cost of HDI PCBs is determined by four primary factors:

  • Layer count: Anylayer HDI PCBs are typically 30–50% more costly than 2N2 HDI alternatives due to their complex manufacturing process;
  • Microvia type: Staggered microvias add 15–20% to the overall cost compared to standard microvias, owing to their precision alignment requirements;
  • Base material: Rogers high-frequency materials double the cost relative to standard FR-4 substrates, reflecting their superior performance in high-speed applications;
  • Order volume: Prototype orders range from $50 to $200 per square inch, while mass production volumes drive costs down to $5–$15 per square inch.

We commit to transparent, all-inclusive quoting with no hidden fees for all HDI PCB projects.

HDI PCB Application Cases

5G Telecom HDI PCB Case

We partnered with a leading 5G base station manufacturer to deliver custom anylayer HDI PCBs, incorporating staggered microvias and Rogers 4350B high-frequency material to achieve ±3% impedance control. The resulting multilayer HDI PCBs reduced the base station module size by 40% and enhanced signal integrity across the 24–40GHz frequency band. We successfully delivered over 100,000 units with zero quality defects, meeting the client’s strict deployment timelines.

Medical Device HDI Rigid Flex PCB Case

Our HDI rigid-flex PCBs were integrated into a portable diagnostic device, with flexible sections enabling seamless bending and rigid sections providing a stable platform for component mounting. The microvia design optimized power efficiency, achieving a standby power consumption of ≤10mW. The product fully complied with FDA 21 CFR Part 820 regulations, helping our client accelerate time-to-market by 2 months.

HDI Multilayer PCB Capabilities

An HDI board requires smaller vias to make layer transitions, particularly in fine-pitch BGA components and more traces per sq. mm. In order to accommodate fine-pitch components, you’ll find the following typical features in an HDI layout:

  • Smaller vias: HDI boards use microvias (mechanically or laser drilled), blind/buried, and staggered vias for layer transitions. These vias have smaller aspect ratios than typical through-hole vias. In order to use these vias with finer pitch components, their diameters are smaller, which then limits their useful depth.
  • Thinner traces: The thinner traces used in HDI boards are required to make connections to vias on each layer, as well as to in-pad vias. The thinner traces also allow higher trace density, thus the term HDI.
  • Higher layer count: We’ve built non-HDI boards with high layer counts, but HDI board layer counts can easily reach 20 or more layers when working with high pin density components (e.g., FPGAs).
  • Lower signal levels: HDI boards are not used for high voltage or high current. This is because the high field strength between neighboring lines will cause ESD, and high currents will cause excessive temperature rise in conductors.
HDI PCB Design Guidelines
Download our design guidelines for HDI PCBs

To prevent getting it wrong from the start, we have put together our design guidelines, to use as a checklist. The file lists some of the fabrication features that are typically associated with HDI. The feature limits listed are not comprehensive; Our experienced engineers have also worked with every type of PCB material, so they have the knowledge and expertise to provide recommendations and answer all of your HDI PCB questions. Most importantly, they kn