Type of aluminum PCB｜The best solution for LED
and flexible printed circuit board
(PCB) design is not the same, you can choose them according to the purpose of the circuit board, a customization. So PCB substrate - based materials, glass fiber is a kind of common and aluminum PCB material is also a kind of applicable range is very wide. Aluminum PCB is composed of metal base copper clad laminate, with high performance, including excellent thermal conductivity and electrical insulation.
KingFung technology co., LTD. Is located in ShenZhen, China, is a leading supplier of all kinds of printed circuit boards, including used in automobile, LED lighting, consumer goods and healthcare industry metal or metal core aluminum PCB. The following is our view of the purpose and benefits of aluminium base PCB. For pricing and delivery time.
The aluminum PCB is a metal plate with three layers：
, also known as the metal base PCB and covered with a layer of copper foil circuit of metal base plate. They are made up of aluminum, magnesium and silicon aluminium (Al - Mg - Si) a combination of alloy plate. Aluminum PCB have excellent electrical insulation, good thermal potential and high processing performance, and several important aspects in PCB is unlike any other.
Base made up of aluminium alloy base.
Heat insulation layer is a vital part of the PCB. It contains ceramic polymer, has excellent viscoelasticity, good heat resistance, and protect the PCB from thermal and mechanical stress.
Circuit layer containing a copper foil mentioned earlier. Generally, PCB manufacturers use 1 to 5 ounces of copper foil. When current flows through the circuit, absorbs heat insulating dielectric layer. Transferring them to the aluminum layer, where heat dissipation.
For the most light output can increase the heat. Has higher heat resistance of PCB can prolong the service life of the product. Qualified manufacturers to provide excellent protection for you, to enhance the efficiency of the thermal diffusion part more reliable. In KingFung, we adhere to the highest standards of your project needs.
The type of aluminum PCB
The power converter and the LED company is by far the largest user of aluminum PCB. However, automobile and radio frequency (RF) companies also use this type of printed circuit boards. Single layer structure is very popular, because it is very simple, but there are other configurations are available.
Flexible aluminum. The flexible dielectric insulated metal substrate (IMS) is the latest development of the material. The material using polyimide resin and ceramic packing, excellent electrical insulation, flexibility and thermal conductivity. When used with flexible aluminum PCB can be distorted and Angle, avoid the fixtures, the use of cables and connectors. But please note that material is flexible, but the design of permanent bending and stay in place. They do not apply to applications need regular curved materials.
Mixed aluminum. Use this option, the non thermal material, and then heat fusion to the aluminum base material. The most common is, the use of double or four made of traditional FR - 4 layer PCB. Using the thermoelectric medium layer fusion to the aluminum substrate can heat, add rigidity and have the effect of heat insulation screen. Mixed aluminum PCB other advantages include:
Compared with the PCB made by all the thermal conductive materials, structure is more cheaper
Compared with the standard FR4 products, has better thermal performance
Eliminate costly radiator and related assembly steps
Wide range of USES, can be used in the rf applications, including PTFE surface can enhance loss characteristics
Hole is aluminum. In the highly complicated structure, single layer aluminum core can form the center of the multi-layer thermal structure. For this type of PCB, aluminum is the drilling in advance, and electricity medium backfilling holes before laminating process. Next, using adhesive materials will be hot material (or a component) laminated to the both sides of the aluminum. After laminating, in a similar way of multilayer PCB drilling was carried out on the component, and then make the plating in the hole through the aluminum clearance to provide electrical insulation.
Compared with other basic materials, metal core PCB has unique advantages:
Cheaper: aluminum content in the earth's crust is second only to oxygen and silicon, in the third place, is the most abundant metal elements content in the crust. In the metal species, second only to iron and steel, as the second kinds of metals.Aluminum can be found in the mines around the world, make it easy to get and refining, especially compared with other metals. This abundance of means aluminum much cheaper than other rare metals. Therefore, the use of aluminum manufacturing and cheaper, especially when involving the aluminum PCB.
Friendly to the environment. Aluminum is a kind of non-toxic, recyclable metal. From the manufacturer to the final consumers, the use of aluminum in PBC will help create a healthy earth.
Better heat transfer. Heat is the cause of electronic equipment seriously damaged. Aluminum conduction and transfer heat from the key components, to minimize the damage of the printed circuit board.
Very durable. Aluminum more durable than base material such as ceramic and glass fiber. It is very strong, can reduce the entire manufacturing process in the process of the processing and daily use and the possibility of accidental damage.
Legerity: given its durability, aluminum is very light. It increases the strength and elasticity of PCB, without extra weight.