PCBTok is Your Authentic HDI PCB Provider

PCBMay can create the HDI PCB to your specifications, from PCB design to assembly. We can do so without hesitation, offering all of the features you desire!

  • Support for your commercial-use equipment
  • Adequately provide your PCB needs without shortage
  • Compatible with a wide range of electronic components and manufacturers
  • Provide IoT-capable boards and HDI boards for smart electronics
  • 100% client satisfaction is guaranteed
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HDI PCB by PCBTok is Reliable

With PCBTok as your supplier, your HDI PCB will be cost-effective. We combine good value with excellent quality.

We are a company that has enough raw materials to supply bulk Multilayer PCB, FR4 PCB, FR5 PCB, and other circuit boards.

All of these sorts of boards will work for your HDI needs. Just inquire!

PCBTok is now taking orders for HDI PCBs.

One of our specializations is HDI PCB assembly. We’ll give you all the knowledge you’ll ever need in this complete feature piece.

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HDI PCB By Feature

Multilayer HDI PCB

Our Multilayer PCB is dynamically capable of handling High Power demands and can survive heavy use. These boards are used in the military and service industry, they must be fully functional indeed.

Prototype HDI PCB

HDI Multilayer PCBs are available, and they are produced using high-quality prepregs. FR4 sheets with a thickness of 75µm can be employed in a number of sophisticated electronics applications.

Microvia HDI PCB

Because we have laser machines, making Microvia PCB is part of our industrial competence. We can create PCBs with 20 layers, 32 layers, and more. Digitalization is made possible by these numerous layers.

Digital HDI PCB

When you apply our Digital HDI PCB on your device, you can expect high compatibility with recently developed digital devices. We use the most advanced materials ultimately designed for the board construction process.


SMD PCB refers to the use of surface mount technology rather than plated through hole technology in the fabrication process. Because there is now a larger component density, the HDI function is optimized.


Through-hole component leads run through the board during the fabrication process, resulting in Plated Through Hole. PTH HDI PCB is hence claimed to be mechanically stronger than SMD HDI PCB.

HDI PCB By Layers (6)

  • 12 Layer HDI PCB

    Applications for HDI PCB are typically for mobile devices such as Bluetooth speakers and wireless headphones. Display PCBs, Sensor PCBs, and other mid-range electronics are all part of our 12 Layer PCB collection.

  • 14 Layer HDI PCB

    The 14-layer PCB is a must-have. This PCB is intended for applications that are typically associated with FR4 materials, but we can also make it with FR5. Our manufacturing facility can handle large orders of this item.

  • 16 Layer HDI PCB

    This component is frequently used in the transportation and semiconductor industries as an alternative to typical single-layer PCB. This PCB is well-known for its everyday use and can be used to equip LCD displays too.

  • 20 Layer HDI PCB

    The 20 Layer PCB is an environmentally beneficial solution because it can be made lead-free and even halogen-free. They are widely available. Due to its low energy usage, it can have a smaller environmental impact.

  • 30 Layer HDI PCB

    Some customers consider this a terrific product since 30 Layer HDI PCBs can be configured to work with LED and power supply components. Some of these items are Aeronautic PCBs with High TG heat efficiency requirements.

  • 40 Layer HDI PCB

    Because of its exceptional stability, PCBTok’s 40 Layer Multilayer PCB is a powerful product with versatile application. It is also quite long-lasting. As most of it is Rigid PCB, mass production is common.

HDI PCB By Surface Finish (6)


    By itself the HDI PCB is undoubtedly superior, with a shelf life of 12 months or more. If this is made with Rogers material, ENIG PCB basically Black Pad Risk damage. Solderability of the PCB is also improved.


    One of the products we provide is the ENEPIG PCB. ENEPIG is typically used to finish high-frequency PCBs and high-power choices. This PCB type maximizes laminate and prepreg material outcomes.


    Home, office and personal devices are two of the most common applications for HASL PCB. This type of PCB can perform a variety of activities, including electronics for consumer products.

  • Lead-free HASL HDI PCB

    The lead-free HASL PCB has an edge over other varieties in terms of durability and environmental friendliness. The HASL PCB has a moderate price tag. It is an excellent design for several machines.

  • Halogen-free HDI PCB

    The benefit of halogen-free PCB is that it can be sold in EU nations with tight environmental restrictions. It is also a popular PCB type due to its performance in component surface mounting.


    PCBTok is capable of producing OSP PCBs, which fall into the medium price range PCB category. As a result, we run numerous functional tests to ensure that there are minimal flaws.

HDI PCB Benefits

24h Online Support
7*24H Online Support

PCBTok can offer 7*24h online support for you. When you have any PCB-related questions, please feel free to get in touch.

Production Efficiency
Production Efficiency

PCBTok can build your PCB prototypes quickly. We also provide 24-hour production for quick-turn PCBs at our facility.

Fast Delivery
Fast Delivery

We often ship goods by international forwarders such as UPS, DHL, and FedEx. If they are urgent, we use priority express service.

Quality Assurance
Quality Assurance

PCBTok has passed ISO9001 and 14001, and also has USA and Canada UL certifications. We strictly follow IPC class 2 or class 3 standards for our products.

How Does PCBTok HDI PCB Work?

HDI PCB refers to a wide range of printed circuit boards. These can be multilayer boards, but also single-sided and double-sided boards.

What makes it HDI is better transmission quality, as well as thermal regulation. Most HDI boards are made with advanced prepreg and laminates like Rogers material.

Because there are more electronic connections per board, per layer, this type of PCB is considered cost-effective.

HDI PCBs are also noted for their ability to enable speed. This is one of our most popular items at PCBTok.

Mobile and telecom applications are particularly well-suited to HDI PCB use. For example, most cellphone PCBs are HDI.

the HDI PCB Production Process

HDI PCB Production Process

We make PCBs using the accepted multi-step process. This includes the following.

The substrate is impregnated with epoxy resin before being baked in its entirety.

The holes are bored after the curing process (if mechanical holes are used).

In the case of Microvia PCBs, laser drilling is also an option.

Next, patterns in the HDI PCB are created using additive and subtractive processes.

The final procedures, such as attaching PCB components, are then completed after the patterns have been prepared.

Advantages of HDI PCB Use

The key benefit of HDI PCB is that it has been tested by thousands of consumers.

When it comes to circuit boards, these are the best-sellers. We can assure you that your product from us is defect-free due to our excellent quality control.

The HDI PCB quality testing is rigorous. It is also the same with High Speed and High-Frequency PCBs.

In daily operation, we conduct Continuous Improvement in our facility, much like the greatest PCB firms.

Choose the HDI PCB, which is built to last. This type of PCB will take your business to new heights.

Advantages of HDI PCB Use pic

HDI PCB High Standards

HDI PCB Standards 1
HDI PCB High Standards 2

HDI PCBs made of PCBTok’s genuine materials are built to last. In the end, this saves you money.

We create all types of PCBs for commercial usage as a trusted source by worldwide brands from the United States, Canada, and Europe.

We specialize in sophisticated industrial circuit boards, such as the 5G HDI PCB, and if that is part of your specifications, you can request any high-layer count HDI PCB for your order.

We have eager pros working with us if you require assistance with your PCB design.

Call us now to avail!

PCBTok HDI PCB Fabrication

PCBTok HDI PCB Fabrication advanced materials

We can handle sophisticated prepregs and laminates thanks to our wide manufacturing capabilities.

Rogers, Arlon, and Taconic materials are available.

We can make use of them to fabricate HDI PCBs: single layer, double layer, or multilayer.

One of the advantages of choosing PCBTok is our commitment to providing you with genuine PCB materials.

You’ll only get the best, so you can get the most out of your end products.

The reward of putting your trust in a good firm like ours is long-lasting items.

Soldermask choice 2

For the HDI PCB requirement, PCBTok is a good PCB maker with a large assortment of circuit board-related items available.

Since 2008, we’ve been producing HDI type of printed circuit boards.

Some customers want their PCBs to have distinct looks, thus they choose different soldermask colors.

You may count on us to provide you with whatever PCB color you desire: the most popular colors are red, blue, and black.

The majority of customers will purchase an HDI PCB with a green soldermask, but we have enhanced the fabrication of HDI PCBs with custom colors, including transparent ones. We’d be glad to offer any type of assistance.

OEM & ODM HDI PCB Applications

HDI PCB for Wireless Applications

PCBTok develops new wireless PCB with HDI that incorporates radio frequency circuitry and wireless technology. Drone PCBs can also be built by us.

HDI PCB for Telecommunication Applications

For our company, HDI PCB for Telecommunication Applications is quite popular. As a PCBA fabricator, we can fully incorporate Integrated Chips.

HDI PCB for Automotive Applications

Because electric and internal combustion engines rely on electronics, HDI types of PCB can be manufactured. They can be exclusively for specific models.

HDI PCB for Medical Applications

Multilayer HDI PCBs are commonly used for surgical equipment, lighting equipment, and other medical applications.

HDI PCB for Power Applications

As a result of recent climate changes, there have been numerous modifications in Power Applications. For example, we now need to create eco-friendly power PCB components.

HDI PCB second banner
PCBTok - Your Qualified HDI PCB Manufacturer and Supplier in China

Your developed product will be flawless thanks to PCBTok.

For over 12 years, we have been a reliable PCB manufacturer.

We are capable of producing industrial-grade HDI circuit boards

HDI PCB Production Details As Following Up

NO Item Technical Specification
Standard Advanced
1 Layer Count 1-20 layers 22-40 layer
2 Base Material KB、Shengyi、ShengyiSF305、FR408、FR408HR、IS410、FR406、GETEK、370HR、IT180A、Rogers4350、Rogers400、PTFE Laminates(Rogers series、Taconic series、Arlon series、Nelco series)、Rogers/Taconic/Arlon/Nelco laminate with FR-4 material(including partial Ro4350B hybrid laminating with FR-4)
3 PCB Type Rigid PCB/FPC/Flex-Rigid Backplane、HDI、High multi-layer blind&buried PCB、Embedded Capacitance、Embedded resistance board 、Heavy copper power PCB、Backdrill.
4 Lamination type Blind&buried via type Mechanical blind&burried vias with less than 3 times laminating Mechanical blind&burried vias with less than 2 times laminating
HDI PCB 1+n+1,1+1+n+1+1,2+n+2,3+n+3(n buried vias≤0.3mm),Laser blind via can be filling plating 1+n+1,1+1+n+1+1,2+n+2,3+n+3(n buried vias≤0.3mm),Laser blind via can be filling plating
5 Finished Board Thickness 0.2-3.2mm 3.4-7mm
6 Minimum Core Thickness 0.15mm(6mil) 0.1mm(4mil)
7 Copper Thickness Min. 1/2 OZ, Max. 4 OZ Min. 1/3 OZ, Max. 10 OZ
8 PTH Wall 20um(0.8mil) 25um(1mil)
9 Maximum Board Size 500*600mm(19”*23”) 1100*500mm(43”*19”)
10 Hole Min laser drilling size 4mil 4mil
Max laser drilling size 6mil 6mil
Max aspect ratio for Hole plate 10:1(hole diameter>8mil) 20:1
Max aspect ratio for laser via filling plating 0.9:1(Depth included copper thickness) 1:1(Depth included copper thickness)
Max aspect ratio for mechanical depth-
control drilling board(Blind hole drilling depth/blind hole size)
0.8:1(drilling tool size≥10mil) 1.3:1(drilling tool size≤8mil),1.15:1(drilling tool size≥10mil)
Min. depth of Mechanical depth-control(back drill) 8mil 8mil
Min gap between hole wall and
conductor (None blind and buried via PCB)
7mil(≤8L),9mil(10-14L),10mil(>14L) 5.5mil(≤8L),6.5mil(10-14L),7mil(>14L)
Min gap between hole wall conductor (Blind and buried via PCB) 8mil(1 times laminating),10mil(2 times laminating), 12mil(3 times laminating) 7mil(1 time laminating), 8mil(2 times laminating), 9mil(3 times laminating)
Min gab between hole wall conductor(Laser blind hole buried via PCB) 7mil(1+N+1);8mil(1+1+N+1+1 or 2+N+2) 7mil(1+N+1);8mil(1+1+N+1+1 or 2+N+2)
Min space between laser holes and conductor 6mil 5mil
Min space between hole walls in different net 10mil 10mil
Min space between hole walls in the same net 6mil(thru-hole& laser hole PCB),10mil(Mechanical blind&buried PCB) 6mil(thru-hole& laser hole PCB),10mil(Mechanical blind&buried PCB)
Min space bwteen NPTH hole walls 8mil 8mil
Hole location tolerance ±2mil ±2mil
NPTH tolerance ±2mil ±2mil
Pressfit holes tolerance ±2mil ±2mil
Countersink depth tolerance ±6mil ±6mil
Countersink hole size tolerance ±6mil ±6mil
11 Pad(ring) Min Pad size for laser drillings 10mil(for 4mil laser via),11mil(for 5mil laser via) 10mil(for 4mil laser via),11mil(for 5mil laser via)
Min Pad size for mechanical drillings 16mil(8mil drillings) 16mil(8mil drillings)
Min BGA pad size HASL:10mil, LF HASL:12mil, other surface technics are 10mil(7mil is ok for flash gold) HASL:10mil, LF HASL:12mil, other surface technics are 7mi
Pad size tolerance(BGA) ±1.5mil(pad size≤10mil);±15%(pad size>10mil) ±1.2mil(pad size≤12mil);±10%(pad size≥12mil)
12 Width/Space Internal Layer 1/2OZ:3/3mil 1/2OZ:3/3mil
1OZ: 3/4mil 1OZ: 3/4mil
2OZ: 4/5.5mil 2OZ: 4/5mil
3OZ: 5/8mil 3OZ: 5/8mil
4OZ: 6/11mil 4OZ: 6/11mil
5OZ: 7/14mil 5OZ: 7/13.5mil
6OZ: 8/16mil 6OZ: 8/15mil
7OZ: 9/19mil 7OZ: 9/18mil
8OZ: 10/22mil 8OZ: 10/21mil
9OZ: 11/25mil 9OZ: 11/24mil
10OZ: 12/28mil 10OZ: 12/27mil
External Layer 1/3OZ:3.5/4mil 1/3OZ:3/3mil
1/2OZ:3.9/4.5mil 1/2OZ:3.5/3.5mil
1OZ: 4.8/5mil 1OZ: 4.5/5mil
1.43OZ(positive):4.5/7 1.43OZ(positive):4.5/6
1.43OZ(negative ):5/8 1.43OZ(negative ):5/7
2OZ: 6/8mil 2OZ: 6/7mil
3OZ: 6/12mil 3OZ: 6/10mil
4OZ: 7.5/15mil 4OZ: 7.5/13mil
5OZ: 9/18mil 5OZ: 9/16mil
6OZ: 10/21mil 6OZ: 10/19mil
7OZ: 11/25mil 7OZ: 11/22mil
8OZ: 12/29mil 8OZ: 12/26mil
9OZ: 13/33mil 9OZ: 13/30mil
10OZ: 14/38mil 10OZ: 14/35mil
13 Dimension Tolerance Hole Position 0.08 ( 3 mils)
Conductor Width(W) 20% Deviation of Master
1mil Deviation of Master
Outline Dimension 0.15 mm ( 6 mils) 0.10 mm ( 4 mils)
Conductors & Outline
( C – O )
0.15 mm ( 6 mils) 0.13 mm ( 5 mils)
Warp and Twist 0.75% 0.50%
14 Solder Mask Max drilling tool size for via filled with Soldermask (single side) 35.4mil 35.4mil
Soldermask color Green, Black, Blue, Red, White, Yellow,Purple matte/glossy
Silkscreen color White, Black,Blue,Yellow
Max hole size for via filled with Blue glue aluminium 197mil 197mil
Finish hole size for via filled with resin  4-25.4mil  4-25.4mil
Max aspect ratio for via filled with resin board 8:1 12:1
Min width of soldermask bridge Base copper≤0.5 oz、Immersion Tin: 7.5mil(Black), 5.5mil(Other color) , 8mil( on copper area)
Base copper≤0.5 oz、Finish treatment not Immersion Tin : 5.5 mil(Black,extremity 5mil), 4mil(Other
color,extremity 3.5mil) , 8mil( on copper area
Base coppe 1 oz: 4mil(Green), 5mil(Other color) , 5.5mil(Black,extremity 5mil),8mil( on copper area)
Base copper 1.43 oz: 4mil(Green), 5.5mil(Other color) , 6mil(Black), 8mil( on copper area)
Base copper 2 oz-4 oz: 6mil, 8mil( on copper area)
15 Surface Treatment Lead free Flash gold(electroplated gold)、ENIG、Hard gold、Flash gold、HASL Lead free、OSP、ENEPIG、Soft gold、Immersion silver、Immersion Tin、ENIG+OSP,ENIG+Gold finger,Flash gold(electroplated gold)+Gold finger,Immersion silver+Gold finger,Immersion Tin+Gold finge
Leaded Leaded HASL
Aspect ratio 10:1(HASL Lead free、HASL Lead、ENIG、Immersion Tin、Immersion silver、ENEPIG);8:1(OSP)
Max finished size HASL Lead 22″*39″;HASL Lead free 22″*24″;Flash gold 24″*24″;Hard gold 24″*28″;ENIG 21″*27″;Flash gold(electroplated gold) 21″*48″;Immersion Tin 16″*21″;Immersion silver 16″*18″;OSP 24″*40″;
Min finished size HASL Lead 5″*6″;HASL Lead free 10″*10″;Flash gold 12″*16″;Hard gold 3″*3″;Flash gold(electroplated gold) 8″*10″;Immersion Tin 2″*4″;Immersion silver 2″*4″;OSP 2″*2″;
PCB thickness HASL Lead 0.6-4.0mm;HASL Lead free 0.6-4.0mm;Flash gold 1.0-3.2mm;Hard gold 0.1-5.0mm;ENIG 0.2-7.0mm;Flash gold(electroplated gold) 0.15-5.0mm;Immersion Tin 0.4-5.0mm;Immersion silver 0.4-5.0mm;OSP 0.2-6.0mm
Max high to gold finger 1.5inch
Min space between gold fingers 6mil
Min block space to gold fingers 7.5mil
16 V-Cutting Panel Size 500mm X 622 mm  ( max. ) 500mm X 800 mm ( max. )
Board Thickness 0.50 mm (20mil) min. 0.30 mm (12mil) min.
Remain Thickness 1/3 board thickness 0.40 +/-0.10mm( 16+/-4 mil )
Tolerance ±0.13 mm(5mil) ±0.1 mm(4mil)
Groove Width 0.50 mm (20mil) max. 0.38 mm (15mil) max.
Groove to Groove 20 mm (787mil) min. 10 mm (394mil) min.
Groove to Trace 0.45 mm(18mil) min. 0.38 mm(15mil) min.
17 Slot Slot size tol.L≥2W PTH Slot: L:+/-0.13(5mil) W:+/-0.08(3mil) PTH Slot: L:+/-0.10(4mil) W:+/-0.05(2mil)
NPTH slot(mm) L+/-0.10 (4mil) W:+/-0.05(2mil) NPTH slot(mm) L:+/-0.08 (3mil) W:+/-0.05(2mil)
18 Min Spacing from hole edge to hole edge 0.30-1.60 (Hole Diameter) 0.15mm(6mil) 0.10mm(4mil)
1.61-6.50 (Hole Diameter) 0.15mm(6mil) 0.13mm(5mil)
19 Min spacing between hole edge to circuitry pattern PTH hole: 0.20mm(8mil) PTH hole: 0.13mm(5mil)
NPTH hole: 0.18mm(7mil) NPTH hole: 0.10mm(4mil)
20 Image transfer Registration tol Circuit pattern vs.index hole 0.10(4mil) 0.08(3mil)
Circuit pattern vs.2nd drill hole 0.15(6mil) 0.10(4mil)
21 Registration tolerance of front/back image 0.075mm(3mil) 0.05mm(2mil)
22 Multilayers Layer-layer misregistration 4layers: 0.15mm(6mil)max. 4layers: 0.10mm(4mil) max.
6layers: 0.20mm(8mil)max. 6layers: 0.13mm(5mil) max.
8layers: 0.25mm(10mil)max. 8layers: 0.15mm(6mil) max.
Min. Spacing from Hole Edge to Innerlayer Pattern 0.225mm(9mil) 0.15mm(6mil)
Min.Spacing from Outline to Innerlayer Pattern 0.38mm(15mil) 0.225mm(9mil)
Min. board thickness 4layers:0.30mm(12mil) 4layers:0.20mm(8mil)
6layers:0.60mm(24mil) 6layers:0.50mm(20mil)
8layers:1.0mm(40mil) 8layers:0.75mm(30mil)
Board thickness tolerance 4layers:+/-0.13mm(5mil) 4layers:+/-0.10mm(4mil)
6layers:+/-0.15mm(6mil) 6layers:+/-0.13mm(5mil)
8-12 layers:+/-0.20mm (8mil) 8-12 layers:+/-0.15mm (6mil)
23 Insulation Resistance 10KΩ~20MΩ(typical:5MΩ)
24 Conductivity <50Ω(typical:25Ω)
25 Test voltage 250V
26 Impedance control ±5ohm(<50ohm), ±10%(≥50ohm)

PCBTok offers flexible shipping methods for our customers, you may choose from one of the methods below.

1. DHL

DHL offers international express services in over 220 countries.
DHL partners with PCBTok and offers very competitive rates to customers of PCBTok.
It normally takes 3-7 business days for the package to be delivered around the world.


2. UPS

UPS gets the facts and figures about the world’s largest package delivery company and one of the leading global providers of specialized transportation and logistics services.
It normally takes 3-7 business days to deliver a package to most of the addresses in the world.


3. TNT

TNT has 56,000 employees in 61 countries.
It takes 4-9 business days to deliver the packages to the hands
of our customers.


4. FedEx

FedEx offers delivery solutions for customers around the world.
It takes 4-7 business days to deliver the packages to the hands
of our customers.


5. Air, Sea/Air, and Sea

If your order is of large volume with PCBTok, you can also choose
to ship via air, sea/air combined, and sea when necessary.
Please contact your sales representative for shipping solutions.

Note: if you need others, please contact your sales representative for shipping solutions.

You can use the following payment methods:

Telegraphic Transfer(TT): A telegraphic transfer (TT) is an electronic method of transferring funds utilized primarily for overseas wire transactions. It’s very convenient to transfer.

Bank/Wire transfer: To pay by wire transfer using your bank account, you need to visit your nearest bank branch with the wire transfer information. Your payment will be completed 3-5 business days after you have finished the money transfer.

Paypal: Pay easily, fast and secure with PayPal. many other credit and debit cards via PayPal.

Credit Card: You can pay with a credit card: Visa, Visa Electron, MasterCard, Maestro.

Quick Quote
  • “PCBTok, a company that does it all, has helped us out several times and saved us time and money by avoiding untrustworthy sellers. Do you want a fantastic auto PCB? Visit PCBTok. Looking for a PCB with multiple components? Visit PCBTok. Do you require a PCB heater? Go visit them as well. They always have what I require! What more could you possibly want from an online PCB seller?”

    David Frederick, Category Purchasing Manager from Wisconsin, USA
  • “The best PCB shop in Asia. A large selection and kind staff. They will direct you to just what you require! I was quite taken aback. I scheduled PCB assistance and they honored it. My PCB problem was swiftly resolved while I sat in front of my computer. I’m glad my problem has been solved easily! It took approximately 20-30 minutes, so I’m not complaining. Real engineers respond to PCB queries from customers!”

    Edward Lance, PCB Engineer from Queensland, Australia
  • “I took my PCB assembly difficulty to PCBTok, and they were professional and pleasant one again. They may have told me I needed something really expensive and I would have been completely unaware. But, to their credit, they informed me that the answer was straightforward! Thank you very much for your help and honesty!”

    Jack Baxter, PCB Inspector from Canada

HDI PCB: The Ultimate FAQ Guide

For those who have never heard of HDI PCB, you might be interested in reading the Ultimate FAQ Guide to HDI PCB. Listed below are some of the most common questions you will need to ask yourself. Once you have answered these questions, you will be well on your way to understanding this technology. There are also some things to know before you begin. You should know that this technology is not for beginners and there are some common mistakes you should avoid.

What Is an HDI PCB?

If you need a flexible and rigid PCB, you’ve definitely heard of an HDI PCB, but what exactly is an HDI PCB? This sort of board is a combination of the two, and its production process is significantly simpler than that of other types of boards.

However, understanding the needs of your application is critical in order to select the optimal alternative. HDI PCBs are available in a variety of layouts and designs, and the design you select must match your needs as well as the needs of your product.

This type of PCB has numerous layers and requires stack-up. HDI PCBs are classified into two types: sequential and blind. The surface of the former can be patterned with various patterns to aid with the arrangement. The latter is a suitable alternative for signal routing because it reduces the size of the holes.

It is, however, less prevalent than the former. This is due to the fact that HDI PCBs require micro vias on both sides of the board.

The process of producing HDI PCBs begins with the selection of a pre-preg. After that, the layer is laminated. The hole is then mechanically or with a plate bored. The micro-vias assist in connecting the layers of the PCB. This also enables the traces and pads to be linked.



The price of this technique is determined by the number of layers and materials used. If a high-density PCB is not required, a more standard PCB can be used.

What Is HDI PCB Stackup?

If you’re not familiar with the terms used in the PCB industry, you may be wondering: What is HDI PCB stackup? Here are some of the most common definitions:

High-density insulated (HDI) PCBs are multilayer printed circuit boards. Each layer is made of a different material. A build-up HDI has sequential layers, while an any-layer HDI uses an every-layer interconnect. Sequential laminations are usually composed of copper-filled micro via structures and involve a core construction. High-pin-count devices often use any-layer HDI PCBs. The cost of an overall board is determined by the number of laminations.

A high-density HDI PCB has a track layout with a high-density configuration. It first emerged in the 1990s and quickly became a popular type of PCB. The technology behind HDI PCBs is advanced and is a common feature of smartphones and tablets. Wi-Fi modules and Bluetooth devices are other high-end PCBs that use HDI technology. Developed by IBM in 1989, the technology has become a common component in smartphones and tablets.

Just have a look at this video:

HDI PCBs use buried, micro vias, and blind vias. These types of vias can be staggered and are ideal for dense multilayer PCBs. Because of their thin-dielectric nature, HDI PCBs are often more expensive to manufacture. If you’re wondering: what is HDI PCB stackup?, let’s examine some examples of the different types of HDI PCBs.

What Is the HDI PCB Layout?

What exactly is the HDI PCB layout? This design has numerous advantages. For starters, it is more efficient. A conventional PCB has fewer components per inch. Furthermore, HDI’s reduced footprint makes it easier to handle and more adaptable.

HDI layouts are often simple to utilize, so there’s no need to be intimidated. Here are some pointers to help you with HDI PCB designs.

The technique of constructing circuit boards with fine pitch components and higher component density is known as high-density integration (HDI). High-density traces are made using the same procedures as standard PCBs, but with greater attention to detail.

The cost is also affected by the number of layers and stackup height. Furthermore, to avoid oxidation, HDI PCBs may necessitate laser drilling of vias.

HDI type II permits buried vias or blind holes but require at least one through-hole. Type III necessitates buried vias but is not a coreless structure. It also supports PTH holes and ground planes. It’s vital to realize that the more holes a PCB require, the more expensive it is. When selecting an HDI PCB layout, speak with your engineer or designer to ensure the layout is appropriate for your needs.

What exactly is the HDI PCB layout? HDI circuit boards are typically four layers thick, and the manufacturing process is identical to that of traditional PCBs. The sequential drilling of buried holes in each layer is required for this design approach.

In addition, HDI necessitates a mechanical through-hole and a single-blind hole in each layer. These holes can be formed by HDI PCB manufacturers using laser technology. They can be constructed with as few as two holes or as many as four layers.

There’s one video:

What Is HDI PCB Manufacturing?

You may be wondering, “What is HDI PCB manufacturing?” when looking for a company to create your next printed circuit board. After all, there are numerous steps involved in the development of this type of board.

There’s one standard HDI PCB manufacturing process flow:

Core board production→ Inspection→ Resin filling PTH holes→ Grinding→ Surface treatment→ Superimposing prepreg and RCC→ Laminating→ positioning, laser drilling→ Plating through holes→ Pattern transfer→ Developing→ Plating copper → Removing protective film→ Etching→AOI inspection→ Coating protective film selective plating→ CNC Routing→ Electrical testing→ Final inspection→ Packaging




The more layers there are on a PCB, the more expensive it is. As a result, HDI PCB manufacturers will provide you with higher quality, reduced costs, and shorter turnaround times.

The HDI method employs a 2-n-2 arrangement, which is more complicated than 2-n-stacking. Because the final HDI PCB design is more complex than typical PCBs, it is critical that the design team knows the device and layout requirements before the manufacturing process begins.

The main difference in manufacturing between HDI board and standard PCB is the laser drilling and plugging with resin. Others are almost the same.

How Many Types of HDI PCB Are There?

You’ve come to the right site if you’re seeking the greatest HDI PCB. Micro vias, via-in-pad technology, and adaptable routing are used on this type of PCB to deliver optimal performance and save costs. Because the board employs via-in-pad technology, all functionalities may be crammed into a single board, decreasing the number of components.

This sort of PCB is also exceptionally dependable, with stacked vias giving an extra layer of protection against harsh environments. It also has laser drilling, which makes smaller holes and enhances the board’s thermal qualities.

The cost of HDI PCBs might vary, and designers must consider their demands while selecting a layout. The final price is affected by the number of layers as well as the number of them.

Types of HDI PCB

Types of HDI PCB

The more layers you select, the more expensive the HDI PCB. A 2+N+2 layout is more expensive than a 1+N+1 layout, and adding layers considerably increases the cost. As a result, regardless of the complexity of your product, it is critical to select a layer count that is ideal for your purposes.

HDI PCBs serve two key functions: cost reduction and component reduction. Thinner lines and a tighter circular ring characterize a conventional HDI PCB. The laminated and mechanically drilled cores are available for the HDI Stackup. Creating a high-quality HDI PCB, the latter requires laser drilling. For smaller boards, however, an HDI PCB is not required.

How to Choose an HDI PCB Manufacturer in China?

When it comes to HDI PCB fabrication, you must select a manufacturer who will give you high-quality items. International certification is the first item to search for.

Because PCB products are primarily exported to other nations, the manufacturer must have all of the appropriate certifications. If a production company is registered, its inspection certificates will be displayed on its website.

To maintain precision and accuracy, HDI PCB production necessitates the use of specialized procedures and equipment. For HDI vias, for example, a laser is necessary and can only drill so far.

Multiple drilling operations or consecutive layer boding may be required for HDI boards. This might add time and money to the production process. As a result, it is critical to select a manufacturer that is capable of handling delicate details.

Make sure to conduct your research before purchasing HDI PCBs from China. You want to avoid scams and low-quality products, so buy from trusted companies.

They may be a little more expensive, but they will be worth it in the long term. Look for high-quality, safe products that are delivered on time. Then, double-check the price. Consider how much you’re willing to spend on your project before deciding on an HDI PCB maker.

How many layers will be required? The more layers there are, the greater the price.

HDI PCBs are often made up of many layers. The number of layers will be determined by the design’s intricacy and the overall performance of your product. A larger layer count may result in improved performance, but it also increases expenses and processing time.

How Many Layers Do You Produce the HDI Boards?

PCBTok can produce up to 30-layer HDI boards. If you have the Gerber files, please send them to us. We can offer you one reasonable price.

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