Ordinary glass fiber PCBs have poor heat dissipation; ceramic PCBs are relatively stable, and are not easily deformed under high temperature and high humidity environments, but they are relatively expensive and are often used in high-end products.
If your product is not so high-end, such as a large-area and high-power LED light board, which is relatively cheap, but requires very good heat dissipation performance, are there PCB entry sheets with cheap material and good heat dissipation?
Aluminum PCB sheet is a metal-based copper clad laminate with good heat dissipation function. Generally, a single-sided panel consists of a three-layer structure, which are a circuit layer (copper foil), an insulating layer and a metal base layer. Generally speaking, considering the conditions of cost and technical performance, aluminum plate is an ideal choice, including 6061, 5052, 1060, etc.
It is widely used in power hybrid ICs, motor driver automation equipment, automotive power controllers, solid state relay power modules, indoor and outdoor LED energy-saving lighting electronic products.
Sine conventional PCB circuit board substrates such as FR4, CEN3, etc. are poor conductors of heat, with insulation between layers, the heat cannot be dissipated. Various electronic devices cannot be excluded from internal heat generation, resulting in high-speed failure of electronic components, and aluminum-based circuit boards can solve this heat dissipation problem.
The dimensions change of Aluminum PCB with temperature are much more stable than circuit boards of insulating materials. When heated from 30 degrees Celsius to 140-150 degrees Celsius, its dimensional change is 2.5% to 3.0%. In addition, the aluminum sheet has a shielding effect and can replace components such as radiators, saving cost.
Haomei Aluminum has three kinds of burr-free Aluminium Entry board for PCB: 1000, 5000 and 6000 series aluminium alloy. 1xxx series has the highest aluminum content, and the purity can reach more than 99.00%. 5xxx aluminum is more commonly used. Under the same area, the weight of aluminum-magnesium alloy is lower than that of other series.