PCBTok’s Competently Constructed Alumina PCB

PCBTok’s Alumina PCB has a dedicated and thorough manufacturing process to ensure that it can competently perform during its designated operation and application.

  • Several options for layering (1 to 40 layers).
  • IPC Classes 2 and 3 have authorized all PCBs.
  • In the facility, we employ about 500 skilled employees.
  • We don’t set a minimum or maximum order quantity.
  • Our knowledgeable staffs are available to help you day or night.
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Excellently Made Alumina PCB Products by PCBTok

Our PCB products are carefully produced using the most advanced technologies and enhanced machinery to guarantee flawless PCB output.

We continuously strive to provide our consumers with the finest products that can withstand all sorts of demands and applications by constantly testing the item.

PCBTok’s primary mission is to offer our consumers outstanding services that they deserve; we always value the needs of our clients.

Choosing PCBTok is your best option in the market; we will satisfy all your needs.

We will continuously enhance our staff’s skills to ensure they will only provide you with the best possible products in the market for your specifications.

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Alumina PCB By Feature

Ceramic PCB

The Ceramic PCB we mainly deploy in this particular board is capable of operating at about 350°C, safe to integrate into high-density circuit tracing, and it has versatile packaging preventing moisture absorption.

Aluminum Oxide PCB

The Aluminum Oxide PCB we specifically utilize in this board has enhanced durability due to its incorporated rigid and robust materials. In addition, it restricts outgassing, and it has exceptional comprehensive strength.

Prototype PCB

The Prototype PCB we use in this particular board offers more accuracy in the final output of the design since it can enable you to detect errors at its early phase. Therefore, it can significantly reduce future repair costs.

DPC Ceramic PCB

The DPC Ceramic PCB we employ in this particular board has excellent electrical insulation. It has better thermal conductivity, and excellent thermal control and can operate in high-temperature conditions.

DBC Ceramic PCB

The DBC Ceramic PCB we mainly utilize in this specific board is perfectly ideal for high-power applications due to the direct bond of the copper and the substrate and if the application requires high copper thickness.

Copper Clad PCB

The Copper Clad PCB that we expressly incorporated in this particular board is its high conductivity; thus, it can carry the voltage throughout the entire board without experiencing any overheating issues.

Alumina PCB By Surface Treatment (5)

  • ENEPIG Finish

    The ENEPIG Finish that we deploy in this particular board offers a longer shelf-life of more than twelve months, depending on its exposed conditions. It has exceptional solder joint and gold wire bonding reliability.

  • OSP Finish

    The OSP Finish that we integrate into this specific board has its cost as its most significant advantage; it is relatively affordable considering its numerous benefits to your applications, including its flat pad surface.

  • ENIG Finish

    The ENIG Finish that we incorporate in this particular board can provide outstanding resistance to oxidation, exceptional electric performance, lead-free and halogen-free features, and high-temperature resistance.

  • Immersion Silver Finish

    The Immersion Silver Finish that we specifically integrate into this particular board is ideal for BGA and other small types of components. In addition, it offers a flat surface, good electrical properties, and better soldering.

  • Immersion Tin Finish

    The Immersion Tin Silver Finish that we integrate into this specific board can be reworked; thus, it can significantly reduce your future repair and replacement costs. But, they are not ideal for multiple reflow processes.

Alumina PCB By Copper Thickness (5)

  • 1 oz Copper Thickness

    The 1 oz Copper Thickness that we have for this particular board can offer high current carrying capacity; thus, they are ideal for applications that seek smooth signal transmission.

  • 2 oz Copper Thickness

    The 2 oz Copper Thickness we have for this particular board is widely deployed in the medical and automotive industry because of its enhanced high power capability and outstanding thermal management.

  • 3 oz Copper Thickness

    The 3 oz Copper Thickness that we integrate for this particular board can offer your applications exceptional thermal control since it can spread the heat throughout the board. In addition, it is easy to maintain.

  • 4 oz Copper Thickness

    The 4 oz Copper Thickness that we specifically have for this particular board has been widely preferred in applications wherein it requires high thermal endurance, high mechanical and electrical strength, and affordability.

  • 10 oz Copper Thickness

    The 10 oz Copper Thickness that we have for this specific board is becoming a popular option worldwide for this particular product because of its high functionality, outstanding heat dissipation, and high current conduction.

Benefits of Alumina PCB

Below are the primary advantages of utilizing this specific board:

  • It is regarded to have exceptional electrical insulation.
  • One of its characteristics is its extraordinary comprehensive strength.
  • It has a thermal expansion of around 22 to 24 W/mk.
  • In terms of its metal cost, it is relatively affordable.
  • It features exceptional gliding properties and low density.
  • In terms of high-frequency applications, it performs outstandingly.
  • It possesses hard enough materials that make its thermal conductivity moderate.
  • It features a High TG value at around 350°C to 1500°
Benefits of Alumina PCB
Primary Structure of Alumina PCB

Primary Structure of Alumina PCB

There are only three layers that compose this board; we have the following:

  • Copper Foil Layer – We only utilize a chemically oxidized layer to maximize the efficiency of its peel strength.
  • Dielectric Layer – In terms of its low thermal resistance, we deploy 50m to 200m. In addition, it has an anti-aging property.
  • Aluminum Base Layer – It acts as the foundation layer; hence, it should be thermally conductive and withstand drilling and cutting.
  • Aluminum Base Membrane – It is responsible for preventing the occurrence of damages that could happen between aluminum, scrape, and etch.

Disadvantages of an Alumina PCB

Despite the numerous benefits it can offer, it has some limitations. Here’s some of it:

  • Material – If you opt for the ceramic selection, it can be susceptible to brittleness, potentially leading to breakage.
  • Cost – It can be expensive to produce compared to the standard metallic PCB bases and FR4 base material.

However, these disadvantages can vary depending on the manufacturer’s capability. Moreover, we can provide you best affordable deals we have. Hence, we strongly suggest going for a manufacturer with extensive industry experience, such as PCBTok.

Disadvantages of an Alumina PCB

Manufacturing Premium Quality Alumina PCB is PCBTok’s Expertise

Manufacturing Premium Quality Alumina PCB is PCBTok’s Expertise
Manufacturing Premium Quality Alumina PCB is PCBTok’s Expertise

PCBTok is a highly competent worldwide manufacturer because we only produce high-quality products. In addition, we have more than a decade of experience in the industry; thus, we are capable of meeting all your specifications.

Furthermore, all of our personnel are highly trained and experienced. We are doing this to provide you with flawless and high-class Alumina PCB products.

All of our PCB products have undergone strict quality inspections and assurance. We are conducting this to solidify the performance of our items further. Additionally, we will always consider all your desired designs for your operation.

The satisfaction of our customers is what we consider success; hence, we are doing our best to fulfill all of your needs. Inquire today and grab our best deals.

Alumina PCB Fabrication

Considerations in Designing Alumina PCB

One of the crucial factors to consider in producing a quality Alumina PCB is necessarily looking out for its design specifications.

The first phase is the idea wherein the dimensions are discussed. Then, we have its diagram, wherein it has its component name, value, and rating.

We have a board block diagram as its third phase. Then, we have the component positioning phase, routing via first-pass, and the testing phase.

All of these mentioned phases are crucial in the final performance of your product; hence, we are performing all of these thoroughly.

Kindly message us for any inquiries you may have regarding this.

Testing Procedure of Alumina PCB

We want to provide our consumers with the best products; thus, we strictly perform quality inspections for our Alumina PCB.

PCBTok performs visual testing, in-circuit testing, automated optical inspection (AOI), and burn-in testing.

These are all the tests we conduct for this board; we are performing these tests on all our PCB products to ensure their performance.

Our dedication to providing our consumers with the best products has made us improve our testing protocols and upgrade our technologies.

Feel free to message us if you have any concerns about these tests.

OEM & ODM Alumina PCB Applications

Telecommunication Device

Due to the capability of this board to operate flawlessly in high-frequency situations, they are highly preferred by almost all telecommunication devices.

Solar Cell

One of the advantages of deploying this particular board in specific applications is its less water absorption rate; thus, they are ideal for solar cell devices.

Power Generation Equipment

Since this particular board is recognized for its high operating temperature that can withstand tremendous temperatures, they are utilized in power generation equipment.

Amplification Devices

Due to their superior capability and enhanced rigidity that can tolerate almost all concerns, they are widely deployed in amplification devices.

Automotive Peripherals

This particular board is recognized for its multilayer capability and outstanding thermal conductivity; hence, they are highly employed in automotive peripherals.

Alumina PCB Banner
PCBTok - China’s Exceedingly Qualified Alumina PCB Supplier

Our extensive experience producing quality Alumina PCB has gratified over a thousand customers worldwide.

We are continuing to provide them with only the finest products.

Alumina 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
  • “It was such an amazing experience dealing with PCBTok. They have the most accommodating and courteous staff who assisted me throughout the purchasing procedure without hassle. Also, all of my Alumina PCB products came securely packaged and well-functioning. I can honestly say that they are very professional and value their customer’s needs so much. I was lucky that I found PCBTok; all of the people, services, and PCB items are extraordinary. There aren’t enough words to say how thankful I am to them. I will surely put another batch of orders from them.”

    Kathryn Bennett, Design Engineer from Annapolis, Maryland
  • “One of the hardest things in building circuit board projects is selecting the right supplier for it because it can affect the overall performance of your expected output. Thus, choosing the manufacturer that can provide all of your desired specifications on a board is crucial. Thankfully, I found PCBTok as my producer of PCBs; all of my requirements for my project are met and of their highest quality. Also, I’m glad I made the right choice of ordering PCB products because they performed well, and I got promoted in my job because of their superb quality. I strongly suggest trying their products out, and I can guarantee that you’ll never go to regret it. I took the risk by purchasing from them, and now I am reaping the benefits of the project I just created for my company. Much thanks to PCBTok for being so accommodating with my needs.”

    Stanley Hughes, Project Engineer from Coventry, United Kingdom
  • “All the products I’ve acquired from PCBTok, specifically my hundred pieces of Alumina PCB, are error-free and perfectly working their designated purposes. It was specifically designed for particular operations, and I am delighted that all of them work up to my expectations. I can say that PCBTok is a professional PCB Manufacturer in China; not just the company itself but also the people that comprise them. They frequently update me on what’s been going on with my products to ensure they follow my specifications accordingly. Moreover, they are very transparent in terms of the procedure that my products went through; I can truly feel how they value me not just as their customer but as a person. Thank you very much, PCBTok; you are much appreciated.”

    Deborah Evans, Electronics Technologist from Waterloo, Canada
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