PCBTok is Your Outstanding Aluminum PCB Producer
PCBTok welcomes your concepts concerning Aluminum PCB; we can produce it according to your needs. We’d be delighted to build this for you!
- Prototype PCB turnaround time of 24 hours.
- Enough raw materials on hand to support your orders.
- Complete customer satisfaction is guaranteed.
- Always available to assist you with your customized PCBs.
- Monitor your local working hours and quote on time.
Aluminum PCB by PCBTok is High-Calibre
By selecting PCBTok as your Aluminum PCB manufacturer, you can be assured of a high-quality, low-cost product. We value you and want to provide you with the best product and service possible.
At PCBTok, we have all of the raw materials you’d like to use in your board; you name it, we have it.
We take your needs into account; please contact us! Place your order right away!
PCBTok is well-known for its expertise in Aluminum PCB. We can provide you with the necessary knowledge you need to fulfill your desired ideas in mind.
Aluminum PCB By Feature
Aluminum PCB By Types (5)
Aluminum PCB By Surface Finish (5)
Aluminum PCB Benefits
PCBTok can offer 24h online support for you. When you have any PCB-related questions, please feel free to get in touch.
PCBTok can build your PCB prototypes quickly. We also provide 24 hour production for quick-turn PCBs at our facility.
We often ship goods by international forwarders such as UPS, DHL, and FedEx. If they are urgent, we use priority express service.
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.
PCBTok Aluminum PCB Properties
The following specifications are available from our Aluminum PCB manufacturing capacity:
- The thickness of the board varies from 0.4 to 3.2 mm.
- 0.5 to 4 ounces copper finish.
- It has a Lead-Free HASL/HASL surface finish on it.
- It has 1W/2W (MK) as its thermal conductivity.
- It can be white or black for the PCBs silkscreen.
PCBTok can fulfill your purchase in 2 to 3 days, depending on the wait time. If you have an immediate request, please feel free to contact us. If necessary, we can expedite your item.
Aluminum PCB Production Process
PCBTok’s Aluminum PCB is made with advanced techniques and is fully certified by ISO and UL. Standard management is performed both automatically and manually, and a simpler production strategy is utilized to maximize productivity.
Aluminum PCB can be flexible, rigid, or rigid-flexible, and it can handle significant wiring density because it’s small and light; leaving you with a lot of selections. There are also sophisticated components that are RoHS-compliant that you can choose from.
Aluminum PCB from PCBTok guarantees that your PCB concepts are optimized.
Advantages of Aluminum PCB Use
Generally, Aluminum PCBs compared to thermal glass PCBs, are far too conductive.
Inexpensive to Produce – This can be easily mined and refined even with the varieties of climates we have. Thus, costs and manufacturing products are considerably cheaper than others.
Ecologically Friendly – This PCB is recyclable, making it environmentally friendly, and is also acknowledged as a non-toxic substance.
Durability Wise – It has a strong foundation, thus it has outstanding durability and strength.
Select a long-lasting Aluminum PCB. In the long run, this will save you a huge amount of money.
Take PCBTok’s Excellent Aluminum PCB
Our Aluminum PCB is no exception to PCBTok’s high-quality components. You will save quite a buck for this in the future.
As a reputable source for global brands from the United States, Canada, and Europe, we make multiple kinds of PCBs for different industrial usage.
If you require a sophisticated industrial circuit board, we can definitely provide you with that.
If you request assistance with your PCB concept in mind, we have enthusiastic professionals on staff.
Enquire today and give us a call!
PCBTok Aluminum PCB Fabrication
Our Aluminum PCB is made with the latest cutting-edge manufacturing methods; following international guidelines.
We aim to provide you with the finest service possible, and we want to ensure that your item is marketable when it arrives.
See it for yourself today; experience our very own Aluminum PCB at PCBTok!
To attain your desired specifications, PCBTok can provide many types of Aluminum PCBs for you.
We will send you enough Aluminum PCB to fulfill your commercial or private PCB applications.
If you want a high-quality Aluminum PCB at a reasonable price that you plan to use in a variety of applications, PCBTok is the perfect option for you.
Enquire today, and give us a call!
OEM & ODM Aluminum PCB Applications
Aluminum PCB Production Details As Following Up
|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|
|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)
|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|
|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)|
|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|
|1OZ: 4.8/5mil||1OZ: 4.5/5mil|
|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|
|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.|
|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)|
|Board thickness tolerance||4layers:+/-0.13mm(5mil)||4layers:+/-0.10mm(4mil)|
|8-12 layers:+/-0.20mm (8mil)||8-12 layers:+/-0.15mm (6mil)|
|26||Impedance control||±5ohm(＜50ohm), ±10%(≥50ohm)|
PCBTok offers flexible shipping methods for our customers, you may choose from one of the methods below.
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.
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.
TNT has 56,000 employees in 61 countries.
It takes 4-9 business days to deliver the packages to the hands
of our customers.
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.
“They have provided me with the greatest and fantastic service I deserve, and they have promised to deliver the best product without sacrificing its quality. They are straightforward in providing their people with the best service and products they can offer, as demonstrated by their website; they can stand and live with it. They are always striving to provide me with the best and are considerate of my needs. I strongly advise you to try PCBTok; I guarantee you will not be disappointed. It’s been a pleasure doing business with you, PCBTok; until the next transaction!”Tom Price, Electronics Engineer and Entrepreneur from Washington, USA
“As a designer, builder, and expert in PCB construction, I can say that their service and product is one of a kind. Some are fantastic, while others are dreadful. For nearly two years, PCBTok has been my go-to PCB manufacturer and supplier. And, I must say, they have never let me down; they always give me the best product and service. This Chinese manufacturer comes highly recommended!”Jean Redlinghuys, Electronics Expert from Victoria, Australia
“I am generally pleased with the quality of service provided by PCBTokk, and I have never had any issues with the price they offer given that they provide you with something that you truly deserve. I already had some ideas and plans in mind, and they didn’t hesitate to put them into action. Also, they always keep me up to date on the status of my order; it’s a pleasure to do business with them. PCBTok is the manufacturer for you if you want someone who will value you as a person and your concerns!”Lory Gilmore, Electronics Entrepreneur from Montana, USA.
Aluminum PCB: The Completed FAQ Guide
What exactly is an aluminum PCB? A printed circuit board (PCB) made of aluminum conductive dielectric material laminated between a metal base and copper foil is known as an aluminum PCB. Aluminum PCBs, which were invented in the 1970s, are extremely useful for LED and other types of electronic applications. Aluminum printed circuit boards have the same layout as copper-based printed circuit boards, including solder masks, silkscreen, and copper layers. They can also be single-sided or double-sided, as copper-clad PCBs are.
You can find all the answers to Aluminum PCB in this FAQ guide.
Double-Sided Aluminum PCB
Copper foil is typically applied to a PCB during the manufacturing process. Because the copper foil thickness exceeds 3 oz, proper etching parameters are required. This compensates for variations in trace width caused by the manufacturing process.
Furthermore, the copper foil thickness of an aluminum PCB must be adjusted in accordance with the design and tolerance requirements. During the manufacturing process, the manufacturer must keep these factors in mind.
The thermal conductivity of a material is an important consideration for PCB. This is determined by how much heat can be transferred through an SQM surface area in one hour. The value is given in kW/M. H. A material with high thermal conductivity is typically used for heat dissipation, while a material with a lower thermal conductivity is typically used for thermal insulation.
Aluminum PCB is commonly found in LED converters and power electronics, but it is also found in automotive and radio frequency applications. The majority of the thermal structure of the board is made up of a single layer of aluminum.
Because it has holes that must be filled with dielectric, a more complex aluminum PCB is also known as a through-hole PCB. Using a standard aluminum PCB reduces the board’s cost and performance while improving the quality of its components.
When weighing the benefits and drawbacks of aluminum PCB technology versus other printed circuit boards, aluminum PCBs come out on top. The benefits of aluminum PCBs include their high thermal expansion properties, which help extend product life, and their power density.
Aluminum PCBs are lightweight and ideal for powering LED lamps. Aluminum PCBs, in addition to being lightweight, can be used for high-power devices such as LED lamps and DC/AC converters.
When looking for a high-quality PCB, you should think about aluminum. Because aluminum is a good heat-transfer material, aluminum-based boards are a good choice for power components and surface-mount technology.
Aluminum PCBs are highly resistant to corrosion in addition to having excellent heat-transfer properties. Avoid storing your aluminum PCB in direct sunlight, as this can cause it to yellow or even blacken. Aluminum PCBs should also be used within 48 hours of opening the vacuum package to avoid moisture and yellowing.
Aluminum’s properties allow it to be highly flexible and lightweight. Polyolefin and glass fiber pre-preg is used to make both high-frequency and universal aluminum PCBs. A high-temperature-conductive polyimide dielectric material was used to fill the through-holes.
Aluminum boards, which provide high-frequency electrical insulation, are also suitable for power supply applications. The material also aids in the reduction of package size.
Aluminum printed circuit boards have layouts that are similar to other printed circuit boards. They consist of a metal core substrate, copper, and aluminum layers. The dielectric layer is critical for insulating circuits and providing a conductive path. Aluminum PCBs are also widely used in portable electronics, wearable electronics, and medical equipment.
LED Lighting PCB
These PCBs are also commonly used in computers, mobile phones, and other devices because they enable manufacturers to design a product with fewer components and save money.
There are numerous benefits to using an aluminum PCB. It’s light, easy to mine, and good for the environment. Aluminum is a strong, long-lasting metal that dissipates heat and thus protects vital components.
Furthermore, mining aluminum is less expensive than mining other metals. This is why aluminum is a popular material for PCBs. The following are just a few of the benefits of using an aluminum PCB.
The aluminum core of the PCB is coated with thermally conductive dielectric materials. The dielectric layer is sandwiched between the circuitry layers, and the aluminum is backfilled with thermal bonding materials.
To maintain electrical insulation, the laminated assembly is then thru-drilled and plated through holes are used. When it comes to thermal resistance, an aluminum PCB with a copper core is a good choice.
Durability is one of the benefits of using aluminum PCBs. Unlike ceramic or fiberglass-based PCBs, they are not easily broken. Aluminum is also good at dissipating heat, making it ideal for cooling devices. Because of its thin layers and thermal insulation, it can be folded into any shape and still retain its shape.
Batches of Aluminum PCB
Aluminum PCBs are also less expensive because they require fewer components. This is excellent news for the environment.
Aluminum is a less expensive metal than copper. This makes it an excellent choice for PCBs for smaller, less expensive electronic devices. Aluminum PCBs help manufacturing companies cut costs because they are lightweight.
This material is extremely durable, which means fewer manufacturing errors. Furthermore, it is widely available, so there is no scarcity. Aluminum has no high demand-low supply issues.
An Aluminum PCB is made up of two layers: a substrate and a dielectric layer. The aluminum substrate provides a strong and rigid foundation for the components that are mounted above it.
A thin film of aluminum acts as a thermal conductor in the dielectric layer. It also gives the PCB flexibility. Aluminum-based printed circuit boards (PCBs) are used in power electronics and have excellent thermal conductivity.
Aluminum PCB is widely used in electronic regulators, automotive ignition, and radio frequency (RF) applications. They’re also ideal for amplifiers, such as power, audio, and balanced models.
Furthermore, aluminum PCB is frequently used in LED applications. A single-layer material is commonly used in the construction of an aluminum PCB. Other structures are available as well. Aluminum-based printed circuit boards are more durable than other materials, making them ideal for a wide range of applications.
The Structure of Aluminum PCB
Aluminum printed circuit boards (PCBs) are essential components of electronic circuits, and they must be properly assembled for the board to function. Aluminum PCBs of various designs will be produced by various aluminum PCB manufacturing processes.
The first step is to cut cavities in the sheet to house the circuit components. The aluminum is then coated with an insulator to make it non-conductive. Various methods are used to prepare the cavity in the sheet. Laser cutting, chemical machining, and mechanical machining are a few examples.
The aluminum PCB is made up of three layers: a circuit layer, an insulating layer, and a metal base layer. Typically, the circuit layer is the copper foil that is etched to form the printed circuit. The copper foil should be between 35 and 280 micrometers thick to achieve the desired current carrying capacity.
A special polymer with a ceramic-filled core serves as the thermal insulation layer. This material has a low thermal resistance and a high viscoelastic performance.
Aluminum PCB is commonly used in electronic design. It is ideal for power supply applications due to its high thermal conductivity and rigidity. In addition, this material is less expensive than copper or other thermal materials. Its adaptability expands design options.
There are numerous benefits to using aluminum as a PCB substrate. Here are a few of these benefits. Some of the most common applications for aluminum PCBs are listed below.
The electronics industry is one of the most common applications for aluminum-backed PCBs. Aluminum-backed PCBs provide increased durability and lower failure rates. They also have lower thermal expansion and mechanical stability. These materials are typically used in high-volume applications.
Application of Aluminum PCB
Aluminum printed circuit boards have a distinct layered system composed of an aluminum-based printed circuit foil with a thickness ranging from one to five ounces.
While aluminum-based PCBs can be used in a variety of electrical applications, they are most commonly found in automotive electronics. PCBs made of aluminum are ideal for ignition and power supply controllers. Audio and video amplifiers, as well as operational and balanced amplifiers, use them.
Finally, aluminum-based PCBs are widely used in LED lighting applications. There are numerous other benefits to using aluminum-based PCBs that make them an excellent choice for electronic design.
Copper thickness must be carefully monitored when producing aluminum-backed PCBs. A thick copper foil makes proper solder mask printing impossible. As a result, after etching, the trace width will be out of tolerance.
As a result, controlling etching factors is critical to ensuring the highest quality aluminum PCB production. Despite the benefits of aluminum-backed PCBs, this material is costly.
Aluminum printed circuit boards are made up of multiple layers of thermally conductive dielectrics. They are light and highly conductive, and they can be folded into any shape while retaining their original shape and size.
Aluminum PCBs are used in a variety of industries, including automotive, LED, and power converter manufacturers. Single-layer aluminum PCBs are the most common, but multilayer PCBs are also available.
They can be manufactured in a variety of ways, and the process is quite simple. The sheet is first prepared for cavities that will house the circuit components. The sheet is then coated with an insulating material after it has been prepared. This process uses a laser, chemical machining, or mechanical machining to prevent electricity from passing through the aluminum. The aluminum PCB is then assembled after the cavities have been prepared.
When the aluminum PCB is finished, it must be properly stored. While aluminum PCBs are light enough to store, they are susceptible to humidity, yellowing, and blackening.
They should be stored in a dry, cool environment. Make certain that the warehouse is well-ventilated. It is not recommended that these PCBs be stored in a refrigerator because the temperature of the aluminum can drop dangerously low.
Etching is another process used to create the aluminum PCB. This procedure is critical because the copper foil used for aluminum PCBs is thicker than that used for standard PCBs. The trace width can become out of tolerance after etching. T
his compensation must be designed before the PCB is etched. You must consider the type of etching process required for your aluminum PCB as well as the benefits.
Power converters, LEDs, and radio frequency (RF) devices are the most common aluminum PCB users. Although single-layer PCBs are the most common, there are other configurations.
The way aluminum PCBs dissipate heat is crucial to their performance. Aluminum PCBs have low thermal conductivity, which can cause electrical components to fail.
The Performance of Aluminum PCBs
Aluminum printed circuit boards (PCBs) are best known for their excellent thermal and electrical insulation properties, but they are also flexible enough to support a wide range of industrial applications.
As a result, they are a popular choice for LED lighting applications. Aluminum PCBs’ flexibility ensures greater stability. Even with complex designs, multi-layer aluminum PCBs are made with multiple layers of dielectric materials and exhibit excellent heat dissipation.
The base insulation layer on an aluminum PCB is typically 500V. Individual customers’ voltage requirements, however, can be much higher, ranging from 3500V to 4000V. An anti-static glove and a voltage tester can be used to determine the exact resistance of the aluminum PCB to electricity.
They should not be stored in a damp or humid environment. Aluminum printed circuit boards should be used within 48 hours of being vacuum packaged.
Thermal conductivity is another important feature of aluminum PCBs. Unlike standard FR4 boards, these boards dissipate heat quickly and effectively.
While FR4 PCBs have a thermal resistance of approximately 20degC/W, aluminum PCBs have an incredible thermal conductivity of 1degC/W to 2degC/W! Because aluminum PCBs are so light, they can be used in applications where thermal conductivity is critical.