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Aluminum PCB

Jarnistech > Aluminum PCB
3Wm/K LED Aluminum PCB Circuit Board

At JarnisTech, we are committed to providing high quality PCBs that not only meet but exceed our customers’ expectations. In the event that you’re in need of an Aluminum Base PCB board, we can be your best source. According to your requirements, we can supply printed circuit boards of IPC Class II or higher.

Boasting several years of practice in the aluminum PCB production sector, we have ascended to a premier status within the industry. We are committed to fabricating high-caliber aluminum PCBs, a goal we achieve by utilizing exceptional PCB raw materials.

Please contact us detailed talk about your Aluminum base PCB project. As you know that we can be shipping PCBs to our clients on time for every order. At the same time, our PCB products have also provide to Fortune 500 companies and startups alike.

What are the Aluminum PCBs?

A PCB made of aluminum has an identical layout to other PCBs, incorporating one or several layers of copper, silk screen, and solder mask. However, unique to these boards is the metal substrate in lieu of traditional fiberglass or plastic, this primarily constitutes of aluminum alloys. Essentially, the foundation is predominantly aluminum. The metal core can be solely aluminum or a fusion of both aluminum and fiberglass. Typically, Aluminum PCBs are typically single-sided, but they can also be double-sided too. However, the production of multi-layered aluminum PCBs poses a considerable challenge.

Aluminum boards make the most use when it comes to LED and power-converting electronics. The intense light created by LEDs generates large amounts of heat which aluminum directs away from the components. A PCB made of aluminum extends the life of an LED light source and offers greater stability. It is common to find aluminum substrates in stop lights and lighting for homes. They enable power converters to switch currents and control electronic components. In other industries, designers have also found use for aluminum PCBs, however they don’t use these as frequently.

Aluminum PCB Production Difficulties and Solutions

Copper Etching: Ideally, for the circuit layer, copper foil should be thick. In contrast, a higher standard, which is over 3oz, would require you to compensate for the etching’s width requirements. By failing to do so, will make the width intolerant to the etching. In light of this, it is imperative to carefully control the etching factors, compensation being one of the most important.

Solder Mask Printing: The thickness of the copper foil within this PCB design impedes solder mask printing on aluminum PCBs. Thus, printing becomes difficult when etched images have a vast difference between the trace surface and the baseboard because a thick layer of copper is present.

Using a quality solder mask oil can solve this problem quickly. Alternately, you can put with resin prior to the solder mask is applied.

Machine-Made: Making an IMS involves the drilling of mechanically, molds, and V-scoring, among other things, centered on the internal via or holes. To solve this, you can use the electric milling as well as a professional milling cutters for making products of a lower volume. In addition, alter the parameters for drilling to stop the production of burrs.

Structure of Aluminum PCB

Aluminum PCB Board Structure

Circuit Copper Layer: Circuit copper layer (usually with the electrolytic copper foil) is etched to create the circuit printed, which is used to implement connections and assembly of devices. In comparison to the conventional FR-4 which has similar thickness and same line width the aluminum substrate can hold a greater current.

Insulating Layer: As the aluminum substrate’s core technology, the insulating layer serves as a bonding, insulating, and heat conducting layer. In the structure of the power module, the aluminum substrate insulating layer provides the biggest thermal barrier. The greater its thermal conductivity in the insulation layer the more suited it is to distribute the heat produced in the operation of the device. Additionally, it helps less the temperature at which the module operates in order to increase the power load that the module is able to decrease its size, extend its time-to-life, and boost your power output.

Metal Substrate: What type of metal is utilized for the insulating substrate is determined by the complete analysis that includes the coefficient for thermal expansion as well as the thermal conductivity and strength the hardness, weight, urface state, condition and the price of the substrate.

In general, when considering factors like price as well as technical efficiency, aluminum plate is the best option. Aluminum plates that are available include 1060, 5052, 6061 and more. If you require higher standards for mechanical properties, thermal conductivity electrical properties and specific features, copper plates stainless iron plates, steel plates, and silicon steel plates may be utilized.

Aluminum PCB Application

Electrical Power: AC converter SW regulator/Switching regulator DC and so on.

Audio device: balanced amplifier, pre-amplifier, Input, output amplifier, audio amplifier,power amplifier and so on.

Power Modules: An inverter, solid state relays rectifier bridges and so on.

Office automation equipment: Motor drive, and so on.

Computer: power supply devices, CPU board, floppy disk drive, and so on.

● Electronic equipment for communication The High-frequency amplifier, filtering appliances, and the transmitter circuit

●  Automobile Electronic regulator and ignition power supply controller etc.

● Lighting and lamps: As the most popular way to promote energy-efficient lamps, a range of LED lights with vibrant energy savings are well-received by the marketplace and aluminum PCBs used in LED lighting also are beginning with large-scale applications.

LED Aluminum Nitride PCB Board

Types of Aluminum Printed Circuit Boards

LED as well as Power converter firms are by that they are the most frequent consumers of PCB made from aluminum. However the radio frequency (RF) and automotive companies also employ this kind of circuit boards. A single layer design is more commonly used because it’s simple however, there are other configurations offered.

Flexible Aluminum PCBs:

Flexible dielectrics are a new innovation within Insulated Metal Substrate (IMS) materials. They are made up of ceramic fillers as well as polyimide resins and offer higher energy insulation and thermal conductivity and flexibility. PCBs can be bent and formed when combined with flexible aluminum alloys to eliminate expensive fixtures, cables, and connectors. While the materials are flexible but they’re designed to be able to bend and remain permanently in place. Important reminder, they’re not meant for applications that require the materials to flex frequently.

Hybrid Aluminum PCBs:

In a hybrid aluminum PCB, a non-thermal material is managed and thermally fused to an aluminum base material. Typically, a two-layer or four-layer PCB constructed from straight FR-4 can be used.Fusing this layer to the aluminum base with thermal dielectrics dissolves the heat, acts as a heat shield, and increases flexibility. The other benefits of a hybrid PCB made of aluminum are:

● Superior thermal performance when compared to traditional FR-4 products.

● Cost-effective construction when in comparison to PCBs that are made of all thermally conductive materials.

● Streamlines related assembly steps and eliminates expensive heat sinks.

● Suitable to be used in RF-related applications, where the features lost can be improved by the PTFE surface layer.

● Superior thermal performance when compared with standard FR-4 products.

Aluminium Backed PCB

Through-hole Aluminum PCBs:

Complex constructions may feature a single layer of aluminum as the nucleus of a multi-sided thermal architecture. With regards to through-hole PCBs, initial steps involve pre-drilling the aluminum and filling the resultant hole with a dielectric substance prior to instigating the lamination process. The heat-tolerant materials, or assemblies, are then thermally bonded to each side of the aluminum. Post lamination, the assembly undergoes another drilling process to realize a multilayer PCB. Electrical insulation is ensured by placing through-holes, coated with a conductive layer, within the aluminum’s drilled holes.

Multilayer Aluminum PCBs:

A prevalent characteristic in the high-performance power supply market, multilayer IMS PCBs are fabricated from multiple dielectric layers that serve as heat conductors. They are designed with multiple circuitry layers embedded within the dielectric, outfitted with blind vias functioning either as signal or thermal vias. While they command a higher price and exhibit less efficient heat transfer compared to single-layer design, they provide an uncomplicated and effective approach to dispersing heat in more intricate designs.

Aluminum PCB Manufacturing Capabilities

SpecificationsAluminum PCB Capabilities
Layer1-12 Layers
Build Time1 Day To 4 Weeks
Aluminum PCB TypesSingle-sided, Double-sided, Aluminum flexible PCB, Single-layer, Double-layer, Multilayer
Quality LevelIPC-A-600 Class 3/2
Thermal Conductivity1W/mK to 9W/mK
Aluminum PCB Substrate Material3003 (pure aluminum)

5052 (Al-Mg alloy)

6061 (Al-Mg-Si alloy)

1100 (pure aluminum)

Dielectric Layer MaterialPolymer Filled With Ceramic
Copper Thickness1OZ to 8OZ (35μm to 280μm)
Manufacturing ConditionFull-line operation; Production Machines And Equipment Specialized For Aluminum PCBs
Surface FinishENIG, OSP, HASL(LF HASL), Immersion Tin, Immersion Silver, Immersion Gold

JarnisTech is an Experienced Aluminium PCB Maker

JarnisTech stands as one of the most reputable and extensive PCB manufacturers in China, with operations carried out over an expansive area exceeding 30,000 square meters. Our company’s principal area of expertise lies in producing high-quality Printed Circuit Boards at a competitive price-point, tailored meticulously to cater for specific client requirements.

JarnisTech has been producing aluminum PCBs for many years. Our complete aluminum circuit board manufacturing capabilities and Free DFM Check allow you to obtain premium aluminum PCBs on time and within budget. Our printed aluminum PCBs are extensively used in LED lighting as well as power equipment and automotive systems.

LED 2 Layer Aluminum PCB

Advantages of Aluminum PCBs

Generally speaking, a Printed Circuit Board (PCB) composed of aluminum exhibits greater conductivity compared to a PCB crafted from Fiberglass board. A standout feature of aluminum PCBs is their dielectric layer. This distinctive component effectively disseminates heat generated by the device, thereby safeguarding the circuit from any potential breakage.

Low Cost to Manufacture:

In comparison to brass, copper and other metallics, aluminum tends to be economical for the wallet. Therefore, it is the best choice to build any PCB. Production costs are the primary problem for manufacturers and aluminum can help keep costs at a minimum. Aluminum is also extremely durable that means there are fewer accidents during the production process. Additionally, aluminum is easily available , so you don’t face the supply-demand issue which can increase prices.

High Durability:

PCBs made of aluminum are recognized for their durability and strength. This allows they to provide an extra element of strength to the PCB design. A design that uses aluminum PCBs is unlikely to experience many breakages. If accidents occur in the process of manufacturing Aluminum PCBs are able to take the pressure well and aren’t damaged like ceramic-based PCBs or fiberglass. They also stand up to the harshest climates.

Heat Radiation:

In comparison to standard PCBs, the aluminum ejects plenty of heat. It’s an attractive alternative to PCBs that do not disperse heat efficiently. This makes aluminum the ideal choice for devices which require a lot of cooling as well as efficient dissipation of heat.


The escalating concerns of global warming and climate change have highlighted the need for innovative solutions that minimize harm to our planet.In fact, of the numerous PCB materials available aluminum is one of the most effective in regards to protecting the environment while making sure that the recycling meter is always high.


Ceramic bases and fiberglass are excellent options for PCB bases in terms of functionality; However, they are heavy. The lightness of aluminum, on the other hand, usually results in better chips because it is thin.


Aluminum PCBs are used in the fabrication of many different device and products. They aren’t just restricted to computers, but spread across many different areas. Amplifiers, power supply motor controllers, automobile parts are just some examples of the products that are made using aluminum PCBs.

LED Thermal Conductivity Aluminium PCB

Disadvantage of Aluminum PCBs

● High cost.

● The mainstream currently can only create single aluminum PCBs Double-sided Aluminum PCB and 4-layer aluminum PCB it’s difficult to make more than 6 layers of multilayer aluminum PCB.

● It will be easier to have question this product in both electrical strength and pressure.

Aluminum core PCB are a good thermal conductor however, ceramic PCB is better, if you’d like to learn more about the differences between ceramic PCB and FR4, please visit the site for more information.

Final Conclusion

Electrical manufacturers are more tend to choose aluminum PCBs because of their broad variety of applications. Additionally, they are often chosen due to their performance over printed circuit boards with fiberglass backing. The most important applications for this PCB include traffic light lighting, auto lighting LEDs, consumer items and power converters.

If you’re in search of an extremely durable material that effectively transfer heat from areas of high heat to prevent the risk of damage, aluminum base PCBs might be the best choice for you. For more information about aluminum PCBs, please contact JarnisTech. As a top PCB producer, we are able to help you manufacturing the top Aluminum Circuit boards.

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