WHAT IS Aluminum PCB with FR4?

Aluminum PCB with FR4 is a type of printed circuit board that combines the benefits of both aluminum and FR4 materials.

The base of the board is made of aluminum, which provides excellent heat dissipation properties.

The aluminum layer is then coated with a layer of FR4, which is a type of fiberglass material that provides electrical insulation and mechanical stability.

Andwin provide thermal pad metal core PCB for customer, email us now for you PCB quote,
Email is : mcpcb@andwinmcpcb.com

What Is Aluminum PCB with FR4?

The combination of aluminum and FR4 makes these PCBs ideal for applications that require high power and high thermal dissipation, such as LED lighting, power supplies, and motor control. The aluminum layer helps to dissipate heat away from the components, while the FR4 layer provides electrical insulation and mechanical stability.

Aluminum PCBs with FR4 are also more durable and resistant to mechanical stress than traditional FR4 PCBs, making them ideal for applications that require high reliability and long-term performance. They are also more cost-effective than other types of high-power PCBs, making them a popular choice for a wide range of applications.

The difference between aluminum PCB and FR4


Aluminum PCB and FR4 PCB are two types of printed circuit boards that have different properties and applications.

Aluminum PCBs are made of a thin layer of aluminum that is laminated onto a non-conductive substrate, such as ceramic or fiberglass. The aluminum layer acts as a heat sink, dissipating heat away from the components on the board. This makes aluminum PCBs ideal for high-power applications, such as LED lighting, power supplies, and motor control.

FR4 PCBs, on the other hand, are made of a woven fiberglass core that is coated with a layer of epoxy resin. This makes FR4 PCBs strong, durable, and resistant to moisture and chemicals. FR4 PCBs are commonly used in consumer electronics, such as smartphones, laptops, and TVs.

In summary, the main difference between aluminum PCB and FR4 PCB is their composition and properties. Aluminum PCBs are designed for high-power applications and have a thin layer of aluminum that acts as a heat sink, while FR4 PCBs are designed for consumer electronics and have a woven fiberglass core that is coated with epoxy resin for strength and durability.

Aluminum PCB and FR4 connection

Aluminum PCB and FR4 are two different types of printed circuit boards (PCBs) that are commonly used in electronic devices. Aluminum PCBs are made of a metal core (usually aluminum) with a layer of copper on top, while FR4 PCBs are made of a fiberglass substrate with a layer of copper on top.

Connecting an aluminum PCB and an FR4 PCB can be done in several ways, depending on the specific requirements of the application. One common method is to use a connector or adapter that is specifically designed for this purpose. These connectors typically have pins or sockets that can be soldered onto the PCBs, allowing them to be connected together.

Another option is to use a wire or cable to connect the two PCBs. This can be done by soldering wires directly to the PCBs or by using a connector that has wires attached to it. The wires can then be connected to the appropriate pins or sockets on each PCB.

It is important to ensure that the connection between the two PCBs is secure and reliable, as any loose or faulty connections can lead to problems with the electronic device. Proper insulation and shielding may also be necessary to prevent interference or other issues.

This arrangement is made so that the heat can dissipate through the metal core and transmit to the chassis.

Most of the LED or analog devices are populated with considerably larger boards.
The surface of the boards finishes by dissipating the heat.

While using the MCPCBs, it is obliged to take proper caution because it is constructed with some complex and complicated metal layers laminated with FR4 based on glass material. 

The chemistry for lamination differs while the board is fabricated.
If the board is bonded properly then there might be voids below the lamination and caution is necessary.

The dissipated fixture of heat is anticipated from the metal core which is needed to be defined and designed carefully.

Applications Of Aluminum PCB with FR4

The technology of the metal core PCB is ideal for its applications that generate immense heat and have difficulty being cool down using conventional fans or other cooling methods.

MCPCBs play an integral role to achieve a high illumination with fewer requirements than LEDs require.
The fabrication process of metal core PCB is helpful for the applications
Since the MCPCBs are most often used in LED technologies for producing a certain illumination the light-emitting diodes releases the heat in applications like:

– General lighting
– Automotive systems
– Industrial, telecom, power supplies, and high voltage regulators types of power converters
– Photovoltaic
– Street safety lightings and streetlights
– Backlight applications

Military and aerospace are another two other sectors appropriate to utilize the benefits of metal core PCBs in their applications.

These sectors are quite sensitive and need to endure frequent thermal cycling, limits of temperature and humidity, along with repeated mechanical shocks.

The MCPCB deals according to the operational requirements only if better structural veracity and thermal conductivity enabling withstanding greater shocks.

The higher the conductivity of thermal, the better it is for the temperature distribution throughout the boards as it ensures a uniform for thermal cycling.

It also stops forming hot spots before near to the active components.
Other than these, MCPCB works great in solar panels and motion control applications.

The combination of a metal core with HDI PCB technology can create an advanced circuit technology including microwave RF PCB, flex PCB, and rigid-flex PCBs.

As the demand for PCBs is high due to the remarkable benefits, the metal core PCB is the most widely used one among all the others.

It ensures high circuitry density, thermal management, and enhanced reliability for enhanced performance.

Thermal conductivity of 2 Layers thermal Pad MPCB

Thermal pad area is 385 W/m.k

Capability of Metal core PCB

Metal core PCB Capability
ItemTechnical specification
Board thicknessMaximum (mm)3.05.0
Panel sizeMaximum (mm)600×1170/
Layer countAluminum PCB1-8L10 L
Copper PCB1-8L10 L
Iron PCB1/
ceramics PCB1-2/
Thermal ConductivityAluminum PCB(w/m.k)0.8 to 12
Copper PCB(w/m.k)2.0-378/
ceramics PCB(w/m.k)24
DrillingMinimum drill diameter (mm)1.00.8
2 Layer ALPCB Via0.3/
MaterialChao Shun(CCAF)(China)Yes/
Hua Dian(China)Yes/
Chin Shi(TaiWan)Yes/
ITEQ(Tai Wan)Yes/
Other brand per customerYes/
Final finishingHASL Lead FreeYes/
Immersion SilverYes/
Immersion Tin/YES

2 Layers direct thermal path copper core pcb application

2 Layers direct thermal path copper core pcb are designed to dissipate heat generated by high-power LEDs,
which helps to increase the lifespan of the LED and improve its performance.
The aluminium base acts as a heat sink, which absorbs and dissipates the heat generated by the LED.

The 2 Layers direct thermal path copper core pcb is made by laminating a thin layer of copper onto an copper substrate.
The copper layer is then etched to create the circuit pattern.
2 Layers direct thermal path copper core pcb for LED lighting applications are available in various sizes and thicknesses, depending on the specific requirements of the application.
They are also available in single-sided, double-sided, and multi-layered configurations.

About Andwin MCPCB

Andwin Ciurcuits MCPCB davision  set up on Feb. 2006.
Focus on  providing metal core PCB for customer
In LED field and power supply field.
We can meet all your MCPCB manufacturing needs,
From single-sided Aluminum to 
complex multilayered metal clad substrate PCBs
And from prototype through production.

The following is a list of the services and products 

We offer:
• Metal Core PCB
• Thermal PAD MCPCB
• Aluminum PCB
• Copper based PCB
• Double sided Aluminum PCB

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