What is aluminum clad pcb specifications?

Aluminum clad PCBs (printed circuit boards) are a type of PCB that uses an aluminum substrate instead of the traditional FR-4 material. Here are some common specifications for aluminum clad PCBs:

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What Is aluminum clad pcb specifications?

  1. Substrate thickness:
    The thickness of the aluminum substrate can vary depending on the application. Common thicknesses include 0.8mm, 1.0mm, 1.2mm, and 1.5mm.
  2. Copper thickness:
    The copper thickness on an aluminum clad PCB can range from 1oz to 6oz. A thicker copper layer provides better heat dissipation and higher current carrying capacity.
  3. Dielectric layer:
    The dielectric layer is the insulating layer between the copper layer and the aluminum substrate. The dielectric layer is typically made of a thermally conductive material such as ceramic or epoxy resin.
  4. Surface finish:
    The surface finish of an aluminum clad PCB can be either HASL (hot air solder leveling), OSP (organic solderability preservatives), or ENIG (electroless nickel immersion gold).
  5. Solder mask:
    The solder mask is a protective layer that covers the copper traces and pads on the PCB. It is typically green in color, but can also be black, white, or other colors.
  6. Silkscreen:
    The silkscreen is the layer that contains the component designators, logos, and other markings on the PCB.
  7. Panel size:
    The panel size of an aluminum clad PCB can vary depending on the manufacturer’s capabilities. Common panel sizes include 18″x24″, 20″x24″, and 24″x24″.
  8. RoHS compliance:
    Aluminum clad PCBs can be manufactured to be RoHS compliant, which means they do not contain hazardous materials such as lead, mercury, and cadmium.

Specification content of aluminum composite panel

The specification content of aluminum composite panel (ACP) includes the following:

  1. Panel thickness:
    ACPs are available in different thicknesses ranging from 2mm to 6mm.
  2. Panel width:
    The width of ACPs can vary from 1000mm to 2000mm.
  3. Panel length:
    The length of ACPs can range from 2440mm to 6000mm.
  4. Aluminum skin thickness:
    The thickness of the aluminum skin used in ACPs can range from 0.12mm to 0.5mm.
  5. Coating type:
    ACPs can be coated with different types of coatings such as PVDF, polyester, and FEVE.
  6. Core material:
    The core material used in ACPs can be made of different materials such as polyethylene, fire-resistant mineral-filled core, and honeycomb core.
  7. Color:
    ACPs are available in a wide range of colors and finishes such as metallic, solid, and wood grain.
  8. Fire rating:
    ACPs can be rated for fire resistance based on their core material and coating type.
  9. Application:
    ACPs can be used for various applications such as building facades, signage, interior decoration, and cladding.
  10. Certification:
    ACPs can be certified by various organizations such as ASTM, EN, and ISO for their quality and performance.

Aluminum substrate manufacturers are located all over the world. Some of the major locations for aluminum substrate manufacturing include:

  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.

Multilayer metal core pcb

Multilayer MCPCB could layout more circuit, the MCPCB smaller much.

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

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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