Product Detail

Product Datasheet

What's Aluminum PCB?

Aluminum PCB means the core (base) material for PCB is the metal, not the normal FR4/CEM1-3, etc. and currently the most common metal used for PCB manufacturer are Aluminum, Copper and steel alloy. Aluminum has good heat transferring and dissipation ability, but yet relatively cheaper; copper has even better performance but relatively more expensive, and steel can be divided into normal steel and stainless steel. It more rigid than both aluminum and copper, but thermal conductivity is lower than them too. People will choose their own base/core material according to their different application.

Generally speaking, aluminum is the most economic option considering thermal conductivity, rigidness, and cost. Therefore, the base/core material of normal Metal Core PCB are made of aluminum. In our company, if not special request, or notes, the metal core refer will be aluminum, then MCPCB will means Aluminum Core PCB.

Aluminum PCBs are used instead of traditional FR4 or CEM3 PCBs because of the ability to efficiently dissipate heat away from the components. This is achieved by using a Thermally Conductive Dielectric Layer.

The advantages to use Aluminum PCB

1.heat dissipation

Some LEDs dissipate between 2-5W of heat and failures occur when the heat from a LED is not properly removed; a LED's light output is reduced as well as degradation when the heat remains stagnant in the LED package. The purpose of a MCPCB is to efficiently remove the heat from all topical IC's (not just LEDs). The aluminum base and thermally conductive dielectric layer act as bridges between the IC's and heat sink. One single heat sink is mounted directly to the aluminum base eliminating the need for multiple heat sinks on top of the surface mounted components.

2. thermal expansion

Thermal expansion and contraction is the common nature of the substance, different CTE is different in thermal expansion. As its own characterics, aluminum and copper have unique advance than normal FR4, thermal conductivity can be 0.83.0 W/c.K.

3. dimensional stability

It is clear that the size of the metal{{0}}based printed circuit board more stable than insulating materials. The size change of 2.5 3.0 percent when Aluminum PCB and aluminum sandwich panels was heated from 30 degree to 140 150 degree .

LED PCBs are metal core PCBs, which use metal as the base material, such as aluminum, iron or copper. In most cases, the LED PCB is an aluminum PCB. Aluminum is mainly used to make LED light Aluminum PCB Board PCBs because it is cheap and lightweight compared to other metals.

Led Aluminum PCB Board consists of three layers. These layers are copper layers, dielectric layers and aluminum base layers. The topmost layer is the copper layer, which makes the electrical connections in the PCB. This layer is standard in all types of PCBs. To protect this layer, a surface treatment is used. Copper provides excellent electrical conductivity and completes the circuit.

The next layer is the dielectric layer, which is very important in metal core PCBs. This dielectric layer acts as an insulator and prevents current flow in the base aluminum layer. This layer has excellent thermal conductivity, which is conducive to heat dissipation.

The last layer of the PCB is the base layer, which is made of aluminum. This layer makes the board unique and gives it a separate identity. Due to the base layer, the PCB is more durable than FR-4. It can withstand wear and high temperatures. In addition, its cooling effect is excellent. It is lighter than copper and iron.

If you have any Aluminum PCB Board demands, please feel free to contact us.

http://ja.betonpcb.com/