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what is mcpcb-mcpcb design

What is MCPCB?

The MCPCB (Metal Core PCB, thermal PCB) is a PCB made of metalcore and copper to laminate, which has good heat dissipation.

In general, the MCPCB board comprises three layers:

  • Copper Foil
  • Insulating Layer
  • Metal-clad Layer

Metal core printed circuit board (MCPCB) can minimize thermal resistance. This means they have excellent thermal conductivity compared with FR4.

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Types Of MCPCB Board

Classify by Layer Counts

Single-Sided MCPCB Board

A single-sided MCPCB board is the most common type. It has a simple process. It is used a lot in LED lighting. This is in contrast to other metal-core PCB boards. It consists of three parts: the copper foil, the insulating layer, and the metal-clad layer.

2 Layer MCPCB Board

2 Layer MCPCB board can layout components on both sides. The structure is complex. It has five parts: the circuit layer, the dielectric layer, the aluminum-clad layer, the dielectric layer, and the circuit layer. MCPCB fabrication involves more resin filling and plating processes. These require twice as many drillings.

Multilayer MCPCB Board

The high-performance power supply industry uses multilayer MCPCB boards. They are made of thermally conductive dielectrics. These structures have one or more layers of circuitry buried in a dielectric. Blind vias are used as thermal vias or signal paths.

Classify By Material

Aluminum PCB

Its core material is aluminum metal. Aluminum Core PCB usually has three layers. These are aluminum substrate, dielectric layer, and copper foil layer. It has good heat dissipation performance and is suitable for high-power applications such as LED lighting.

Flexible MCPCB Board

One of the latest developments in metal core PCB is flexible dielectrics. These materials provide excellent electrical insulation, flexibility, and thermal conductivity. When applied to a flexible MCPCB board, the product can be realized in various shapes and angles. It can bend without cracking. Cost savings on expensive fixtures, cables, and connectors.

Copper Core PCB

Copper Core PCB is copper metal core PCB. The copper core PCB dissipates heat well. It is good for high-frequency circuits. It is also good for cooling precise communication equipment and buildings.

Iron Core PCB

Iron Core PCB metal clad layer is iron. Iron is much harder than aluminum. This is true despite the manufacturing process and difficulty of the aluminum. It’s used in high-end motors, high-end product equipment, and motors.

Advantages Of MCPCB

1. Good Heat Dissipation

The Metal Core PCB (MCPCB) can cut thermal resistance. It has a smaller thermal resistance. Also, its thermal expansion coefficient is closer to that of copper foil.
It has excellent thermal conductivity and heat dissipation performance. This lowers the module's temperature and makes it last longer.

2. High Current Carrying

The MCPCB board can carry a higher current with the same thickness and line width.

3. Good Machinability

MCPCB board can replace ceramic substrate, better mechanical durability. At the same time, strong and tough materials can make large-area printed boards. They can also place components.

4. Good Electromagnetic Wave Shielding

To ensure electronic circuits work well, some components in products must block radiation and electromagnetic interference. The MCPCB(Metal Core PCB) can act as a shielding plate to shield electromagnetic waves.

5. Environmental friendly

The aluminum of MCPCB board material used as the raw material is non-toxic and recyclable. Comply with RoHs requirements.

6. Light weight

Aluminum of metal core PCB is amazingly lightweight. It has great strength and flexibility, which is very convenient.


 MCPCB Board Applications

MCPCB_Board_Application_metal_core_pcb_manufacturer_Audio Equipment

Audio Equipment

Input, output amplifiers, balanced amplifiers, audio amplifiers, preamplifiers, power amplifiers, etc.


Power Supply Equipment

Switching regulator, DC/AC converter, SW regulator, etc.


Communication Electronic Equipment

High-frequency amplifier, filter appliance, sending circuit, motor drives, etc.



Electronic regulator, igniter, power controller, etc.


Power Module

Converter, solid state relay, rectifier bridge, etc.


LED Lighting

With the promotion of energy-saving lamps, MCPCBused in LED lights have also begun to be used on a large scale.

Fabrication Capabilities

Item Technical Parameters Specification
Min Circuit Line Width/Space 4/4 mil Finished Copper Thickness 1 oz
Min MCPCB Pad Ring of Via 4 mil Distance between hole edge to ring outskirt
 Min MCPCB Pad Ring of PTH 6 mil Distance between hole edge to ring outskirt
 Min MCPCB Via Size 8 mil Board Thickness < 1.2 mm
 Min MCPCB Thickness of Double sided 0.5 mm Final Board Thickness
Min MCPCB Thickness of Multilayer 0.5 mm Final Board Thickness
Max MCPCB Thickness 5.0 mm Final Board Thickness
 Max MCPCB Dimension 1200×600 mm Single and Double Sided  PCB
 Space Between Line to Board Edge 10 mil Milling of Outline
 Max MCPCB Layers 8 Layer
MCPCB Solder Mask Color Green, Black, Blue, Red, White, Yellow
MCPCB Silkscreen Color White, Black, Yellow
MCPCB Surface Finishing HASL, ENIG, ENEPIG, ImAg, ImTin, OSP
Max Finishing Copper Thickness 10 oz
Dielectric Thickness 4 mil
MCPCB Material Aluminium 1100, 3003, 5052, 6061, Copper, Iron
Special Technology Blind&Buried MCPCB, T-Slot, Countersink hole

Metal Core PCB Manufacturing Process

CNC Drilling

NC drilling is the first step of Metal Core Printed Circuit Board (MCPCB) manufacturing. The drills are CNC-controlled, following the Gerber drilling file.

Solder Mask And Silkscreen Printing

Solder mask coating will protect the copper and trace from mechanical and environmental damage. After applying the solder mask, the panel gets added to with the legends. This is done through screen printing of identification ink in different colors.

Milling And V-CUT

The MCPCB board has been cycling in the final milling process, and the CNC machine follows the MCPCB outline gerber to mill and V-CUT.


Vacuum Package

All the good MCPCB boards will be small vacuum packaging and carton packaging. Then, it is shipped worldwide through UPS, DHL, and Fedex Express.

Why Choose Us?

King Sun is a leading MCPCB manufacturer. Our Metal Core PCB uses a reliable aluminum core with the following advantages:

  • Excellent thermal conductivity
  • Excellent insulating ability
  • Excellent dimensional stability
  • Excellent mechanical strength
  • Lower heat expansibility
  • Lower operating temperature
  • Increase power density
  • Reduce the number of interconnects
  • Extend the life of dies

We also make PCB prototypes with a very fast turnaround lead time:

Layer Count Standard Lead Time Quick Turn Around
1 Layer 4-5 DAY 24 Hours
2 Layer 7-8 DAY 96 Hours