What is aluminum base pcb?

An aluminum base PCB (printed circuit board) is a type of PCB that has an aluminum base instead of the traditional fiberglass or epoxy base.
The aluminum base provides better thermal conductivity and heat dissipation, making it ideal for applications that require high power and high temperature.

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

What Is aluminum base pcb?

Aluminum base PCBs are commonly used in LED lighting, power supplies, automotive electronics, and other high-performance electronic devices.

The aluminum base is typically coated with a layer of dielectric material to insulate the circuit from the metal base. The circuit is then printed on top of the dielectric layer using standard PCB manufacturing techniques.

Types of aluminum base pcb

There are several types of aluminum substrates used in the manufacturing of aluminum base PCBs. Some of the most common types include:

  1. Standard Aluminum Substrate:
    This is the most commonly used type of aluminum substrate in PCB manufacturing. It has a thermal conductivity of around 1.0-1.5 W/mK and is suitable for most applications.
  2. High Thermal Conductivity Aluminum Substrate:
    This type of substrate has a thermal conductivity of around 2.0-3.0 W/mK and is used in applications that require high power and high temperature.
  3. Insulated Metal Substrate:
    This type of substrate has a layer of insulation material between the aluminum base and the circuit layer. It is used in applications where electrical isolation is required.
  4. Copper-Clad Aluminum Substrate:
    This type of substrate has a layer of copper on top of the aluminum base, providing better electrical conductivity.
    It is used in applications where high-frequency performance is required.
  5. Hybrid Aluminum Substrate:
    This type of substrate combines the benefits of aluminum and copper substrates.
    It has a layer of copper on top of the aluminum base, providing both high thermal conductivity and high electrical conductivity.
    It is used in applications that require both high power and high-frequency performance.

  1. North America:
    The United States and Canada are home to many aluminum substrate manufacturers, including Alcoa, Novelis, Aleris, and Kaiser Aluminum.
  2. Europe:
    Major aluminum substrate manufacturers in Europe include Constellium, Norsk Hydro, and Granges.
  3. Asia:
    China is a major producer of aluminum substrates, with companies like China Hongqiao Group Limited and China Zhongwang Holdings Limited.
    Other Asian countries with significant aluminum substrate manufacturing capabilities include Japan (Kobe Steel and UACJ Corporation) and India (Hindalco Industries).
  4. Middle East:
    Aluminium Bahrain (Alba) and Emirates Global Aluminium (EGA) are two major aluminum substrate manufacturers in the Middle East.

Overall, aluminum substrate manufacturers can be found in many different countries around the world, with production facilities located in areas with access to raw materials and transportation infrastructure.

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 base pcb

Aluminum substrate is used in a variety of applications, including:

  1. Printed circuit boards (PCBs): Aluminum substrate PCBs are used in high-power LED lighting, automotive electronics, and power supplies.
  2. Heat sinks: Aluminum substrate is used as a base material for heat sinks in electronic devices to dissipate heat generated by the components.
  3. Solar panels: Aluminum substrate is used as a base material for solar panels to provide a stable platform for the photovoltaic cells.
  4. Automotive components: Aluminum substrate is used in automotive components such as engine parts, transmission parts, and suspension systems due to its lightweight and corrosion-resistant properties.
  5. Aerospace components: Aluminum substrate is used in aerospace components such as aircraft frames, wings, and landing gear due to its lightweight and high strength-to-weight ratio.
  6. Building materials: Aluminum substrate is used in building materials such as roofing, siding, and gutters due to its durability and resistance to corrosion.

– 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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