what is Aluminum PCB？

Aluminum PCB, also known as aluminum base PCB or metal core PCB, is a kind of printed circuit board which uses a layer of aluminum as the base material instead of the usual FR4 material. This makes it an excellent choice for applications that require a high level of heat dissipation.Aluminum PCBs can be used in a variety of industries and applications including LED lighting, automotive, power supply, and consumer electronics. They are ideal for applications that require high thermal conductivity, thermal management, and electrical insulation.

The construction of an aluminum PCB consists of a thin layer of thermally conductive dielectric material, which is bonded to a thick layer of aluminum. The copper circuit layer is then bonded to the aluminum layer, creating a thermal path from the copper layer to the aluminum layer, which effectively dissipates heat from the electronic components. One of the key advantages of aluminum PCBs is that they can handle a higher power density compared to traditional PCBs. This is due to the excellent thermal conductivity of aluminum, which allows it to dissipate heat quickly and efficiently. As a result, applications that produce a large amount of heat, such as high-power LED lighting, can be optimized for long-term reliability by using aluminum PCBs. Another advantage of aluminum PCBs is their mechanical strength. The aluminum substrate is much stronger than the traditional FR4 substrate, which means that aluminum PCBs are better able to withstand harsh environments. The thermal expansion coefficient of the aluminum substrate also ensures that the PCB can withstand a greater range of temperatures without warping or cracking.

There are several factors to consider when selecting the right aluminum PCB for your application. The following are some of the key factors to consider:

Heat Dissipation - The ability to dissipate heat quickly and efficiently is one of the key advantages of aluminum PCBs. When selecting an aluminum PCB, it is important to determine the amount of heat that will be generated by the electronic components and select a substrate that can dissipate that heat effectively.

Thickness - The thickness of an aluminum PCB can vary depending on the specific application. For example, a PCB for a high-power LED light may require a thicker substrate to handle the high thermal loads. In general, a thickness of 1.6mm to 2mm is considered typical for aluminum PCBs.

Layout - The layout of the aluminum PCB is important to consider when selecting.