Introduction: Demystifying High-Density PCB Technology
The demand for smaller, more powerful devices is driving innovation across industries. High-Density Interconnect (HDI) PCBs have emerged as a critical technology, enabling engineers to create compact, high-performance designs without sacrificing functionality. Despite their growing importance, many still find HDI technology complex. This article explains what HDI PCBs are, how they work, and why they are essential to modern electronics.
HDI PCBs are advanced printed circuit boards designed to accommodate more components in a smaller space. Unlike traditional PCBs, HDI boards use features like microvias, stacked vias, and blind vias to increase component density and improve performance.
These boards are ideal for applications requiring high performance and minimal footprint, such as smartphones, medical devices, and aerospace systems. By enabling compact designs and delivering superior performance, HDI technology has become a cornerstone of modern electronic design.
Despite their popularity, HDI PCBs are often misunderstood. One misconception is that HDI PCBs are simply smaller versions of traditional PCBs. In reality, HDI technology requires advanced design and manufacturing techniques.
Another misconception is that HDI technology is only suitable for high-end applications. While HDI PCBs are used in high-performance devices, they are increasingly adopted in mid-range and even entry-level products.
Finally, some believe HDI technology is too expensive. However, the long-term benefits of improved performance, reduced size, and enhanced reliability often outweigh the initial costs.
Core Components and Construction
HDI PCBs are built using advanced materials and construction techniques that enable higher component density. Key components include:
These components are combined with high-performance laminates and conductive coatings to create PCBs that are both smaller and more powerful.
The primary difference lies in design and construction. Standard PCBs use traditional vias and larger components, which limit density and performance. HDI PCBs, on the other hand, use microvias, stacked vias, and blind vias to increase component density and improve performance.
HDI boards also use high-performance materials like laminates and conductive coatings, resulting in superior performance and reliability. Advanced design and manufacturing techniques are required, including specialized routing and layer stacking.
Consumer Electronics, Automotive, and Aerospace
HDI technology is used in a wide range of industries. In consumer electronics, it’s used in smartphones, wearables, and compact devices, enabling smaller and more powerful designs.
In automotive, HDI PCBs are used in advanced driver-assistance systems (ADAS) and electric vehicles (EVs), integrating more sensors and control units into vehicles.
In aerospace, HDI PCBs are used in avionics and other high-performance systems, ensuring stability and reliability under extreme conditions.
The primary reason is its ability to enable compact, high-performance designs. In industries where space is limited, HDI technology allows engineers to pack more components into a smaller space.
HDI boards also offer superior performance, with faster data transmission, improved thermal management, and better signal integrity. Their reliability ensures stable and durable operation, even under heavy workloads.
Emerging Trends and Innovations
As technology evolves, the demand for smaller and more powerful devices will grow. HDI technology is at the forefront, enabling engineers to push design boundaries.
Key trends include smaller vias, advanced routing techniques, and integration with flexible PCBs and embedded components. These advancements allow for higher component density and more compact designs.
Looking ahead, HDI technology will play an even more significant role in electronic design. New materials and manufacturing techniques will enable higher component density and improved performance.
The Importance of Understanding High-Density PCBs
Understanding HDI technology is essential for electronic design. It enables compact, high-performance designs, making it a critical technology for modern electronics.
By enabling smaller, more efficient designs, HDI technology allows engineers to create devices that are faster, more powerful, and more reliable. Whether designing a smartphone, medical device, or aerospace system, HDI technology offers the performance benefits needed to succeed in today’s competitive market.
The relevance of HDI technology to modern electronics cannot be overstated. As technology evolves, the demand for compact, high-performance devices will grow. HDI technology is essential for meeting this demand, enabling engineers to create the next generation of innovative devices.
At OneStopPCB, we specialize in HDI PCB manufacturing and prototyping. Our commitment to speed, quality, and customer satisfaction makes us the ideal partner for your next project.
Whether you’re designing a compact smartphone, a high-performance medical device, or a cutting-edge aerospace system, OneStopPCB has the expertise to help you achieve your goals.
Ready to take your designs to the next level? Visit www.onestop.com to learn more about our HDI PCB services and start your next project today.
OneStopPCB – Your Partner in Innovation.
In today’s fast-paced business environment, speed is a critical factor in staying competitive. For companies that rely on PCB manufacturing, the ability to deliver high-quality PCBs quickly can make all the difference. This is where OneStopPCB excels.
OneStopPCB is committed to delivering PCBs faster than the competition, without compromising on quality. Our state-of-the-art manufacturing facilities and streamlined processes allow us to produce high-quality PCBs in record time. Whether you’re working on a tight deadline or need to quickly prototype a new design, OneStopPCB can help you meet your goals.
Another key factor that sets OneStopPCB apart from the competition is our wide variety of PCB options. We understand that every project is unique, and that’s why we offer a diverse range of PCB types, materials, and finishes to meet the specific needs of our customers.
From standard FR-4 PCBs to advanced HDI PCBs, we have the expertise and capabilities to handle even the most complex designs. Our team of experienced engineers works closely with customers to ensure that their PCBs meet all performance and reliability requirements.
At OneStopPCB, we’re proud to have helped numerous customers achieve their goals and bring their ideas to life. Here are just a few examples of the success stories we’ve been a part of:
A leading smartphone manufacturer approached OneStopPCB with the challenge of designing a compact, high-performance PCB for their latest device. By leveraging our expertise in HDI PCB technology, we were able to deliver a PCB that met all of their requirements, including a compact design, high performance, and reliable operation.
The result was a smartphone that was thinner, lighter, and more powerful than ever before. Our customer was thrilled with the results, and we’re proud to have played a key role in their success.
A medical device company needed a high-performance PCB for their latest diagnostic equipment. The device required a compact design and reliable operation, even in demanding environments.
OneStopPCB worked closely with the company to design and manufacture an HDI PCB that met all of their requirements. The result was a medical device that performed reliably, even under heavy workloads. Our customer was impressed with the quality and performance of the PCB, and we’re proud to have helped them bring their product to market.
Simplify your PCB sourcing—get in touch now for high-quality products and efficient service!
Plan layer arrangements to maximize efficiency and signal integrity. A well-thought-out stack-up minimizes signal distortion and enhances thermal management.
Use advanced routing software to navigate the complexities of HDI designs. Techniques like blind and buried vias can help manage space constraints effectively.
Select materials based on thermal performance, dielectric properties, and cost-effectiveness. High-quality laminates and copper foils are essential for achieving desired electrical and thermal characteristics.
Invest in thorough prototyping and simulation to validate your design before mass production. This helps identify potential issues early and ensures the final product meets performance expectations.
Laser drilling for microvias
Plating and deposition to ensure electrical connectivity
Lamination of multiple layers to create complex structures
Solder mask application for protection and identification
Cutting-edge tools like laser drills enable the precision required for HDI designs. Innovations in plating techniques enhance conductivity and durability.
Ensure reliability through stringent testing like electrical continuity and thermal cycling. Automated optical inspection (AOI) is also used to detect defects early.
| Specifications | PCB Capabilities |
| PCB Layers | 4 ~34 layers |
| High-Density Layers | Up to 18 layers |
| Delivery Time | 1 day to 3 weeks |
| Stackup | 1+N+1, 2+N+2, 3+N+3, 4+N+4 |
| PCB Via | Blind via, Buried via, Staggered via, Stacked via, Skip via |
| Minimum Laser Drill Diameter | 0.075mm |
| Final PCB Thickness | 0.15mm |
| Minimum Trace Width/Space | Flex/rigid-flex PCBs: 1.6mil/1.6mil Rigid PCBs: 3mil/3mil |
| Production Capability | 3000m² per day |
| Copper Thickness | 100μm to 125μm |
| Impedance Control | 90Ω ~100Ω |
| Technical Feature | 90Ω & 100Ω Differential impedance, thick cooper |
| Silkscreen | White, Black, Red,etc. |
| Soldermask | Green, Blue, Purple, White, Black, Pink,Orange |
| Surface finish | OSP, HASL, Lead Free HASL,ENIG,Immersion Tin,Immersion silver, Hard gold plating,etc. |
Choosing onestoppcb for your HDI PCB needs comes with numerous advantages that set us apart in the competitive electronics manufacturing industry:
Speed and Efficiency: Our streamlined manufacturing processes ensure rapid prototyping and on-time delivery, helping you maintain tight project schedules without compromise.
High Precision and Quality: Equipped with state-of-the-art facilities, we specialize in crafting high-density interconnect (HDI) PCBs with unparalleled accuracy and reliability, perfect for sophisticated and compact electronic designs.
Diverse Customization Options: Whether you need multi-layer, blind and buried vias, or microvia solutions, we offer a wide range of configurations to meet your specific requirements.
Global Trust and Expertise: With extensive experience exporting to the U.S., Europe, Vietnam, and South America, we understand and adhere to international standards, ensuring consistent quality every time.
Personalized Support: Our dedicated team of engineers and account managers work closely with you, providing expert guidance and responsive service to simplify your supply chain.
Choosing onestoppcb means partnering with a factory that values speed, diversity, and exceptional quality, ensuring your success in every project.
here are more pictures of our factory’s equipment display in our company profile, please click here.
● IATF 16949:2016
● ISO 9001:2015
● ISO14001:2015
● ISO13485:2016
● UL
Furthermore, all our products adhere to the IPC & ROHS Standards. It is our continuous endeavor to produce premium quality PCB products.
We understand you may have questions about our products and services. Here, we provide answers to common queries regarding our HDI PCB.
High-density interconnect, or HDI, circuit boards are printed circuit boards with a higher wiring density per unit area than traditional printed circuit boards.
HDI PCBs differ significantly from standard boards by incorporating multiple layers, micro-vias under 0.008 inches in diameter, and specialized via-in-pad processes. They often include blind, buried, and stacked vias, allowing exceptionally dense circuitry where traces and spaces both measure below 0.005 inches. This combination results in superior miniaturization and performance, making HDI PCBs ideal for mission-critical applications.
Your Trusted HDI PCB Manufacturer Since 2011
onestoppcb brings the advanced capabilities and decades of expertise required to handle all your fabrication and manufacturing needs, including high-density interconnect (HDI) PCBs. With HDI boards gaining increasing popularity across diverse sectors—such as medical, military, and aerospace—we stand ready to deliver the reliability and performance demanded by these critical industries.
PCBs built with high-density interconnect (HDI) technology generally occupy a smaller footprint, as they fit more components into a tighter space. By incorporating blind, buried, and micro vias, along with via-in-pad placements and very fine trace widths, HDI designs efficiently pack a higher component density onto a smaller board.
HDI PCBs deliver substantial advantages. They enable a more compact device footprint and can enhance overall electrical performance, supporting higher data transmission speeds. Moreover, they accommodate more input/output connections within a smaller area.
At onestoppcb, our 4-layer HDI manufacturing process closely resembles standard PCB production, with the primary distinction being the order in which holes are drilled. We start by mechanically drilling buried vias between layers 2 and 3, then move on to the through-holes from layers 1 to 4. Finally, we form blind vias between layers 1-2 and 4-3. This carefully sequenced approach ensures optimal board integrity and reliable signal performance.
At onestoppcb, we use a combination of polymer resin (dielectric)—with or without fillers—reinforcement materials, and metal foil as the primary building blocks of our circuit boards. In a typical layer construction, alternating layers of dielectric and metal foil are stacked to achieve the desired thickness and electrical performance. This process ensures both reliable functionality and structural integrity for a wide range of applications.
We’ve found that PCB dimensions and shape play a crucial role in determining cost. Larger boards require additional materials and take longer to produce, driving up expenses. Meanwhile, PCBs with unusual shapes may need specialized tooling or more complex processes, which can also contribute to higher costs
Simplify your PCB sourcing—get in touch now for high-quality products and efficient service!
ONESTOPPCB
1-4/F Property Office Building, ZhengFeng North Road, Shenzhen, China 518103
Phone: +86-0755-36309132
1-4/F Property Office Building, ZhengFeng North Road, Shenzhen, China 518103
Get in Touch with Onestoppcb – Your Premier PCB Partner
1.Fast Turnaround Time: Our streamlined manufacturing process ensures rapid prototyping and production, meeting tight deadlines effortlessly.
2Diverse Product Range: We offer an extensive variety of PCB types and designs, catering to the unique needs of engineers and procurement teams.
3Quality Assurance: With rigorous quality checks and high standards, we consistently deliver reliable and durable PCBs, minimizing risks for your projects.
Simplify your PCB sourcing—get in touch now for high-quality products and efficient service!
