is a kind of PCBs, which usually refers to aluminum PCB, Only the material of circuit board is aluminum alloy, which is mainly used in LED lamps and lanterns. In the past, the material of our general circuit board was glass fiber, but because of the high heating of LED, the circuit board for LED lamps is generally aluminum substrate, which can conduct heat fast.
Compared with the traditional FR4, the aluminum substrate can carry higher current with the same thickness and line width. The withstand voltage of the aluminum substrate can reach 3000V, especially 5000v. The thermal conductivity commonly used are 1W, 2W and 3W,main features are as follow
Surface mount technology (SMT) is used to deal with thermal diffusion effectively in circuit design;
Reduce the operating temperature of the product, improve the power density and reliability of the product,
It can prolong the service life of products, reduce the volume of products and reduce the cost of hardware and assembly;
Replace fragile ceramic substrate for better mechanical durability.
Aluminum based copper clad laminate is a kind of metal circuit board material, which is composed of copper foil, thermal insulation layer and metal substrate
Cireuitl.Layer Circuit layer: equivalent to common PCB copper clad laminate, circuit copper foil thickness LOZ to 10oz.
Dielctric layer: insulation layer is a layer of low thermal resistance thermal insulation material. Thickness: 0.003 "to 0.006" inch is the core technology of aluminum based copper clad laminate, which has obtained UL certification.
Baselayer: it is a metal substrate, usually aluminum or optional copper. Aluminum based copper clad laminates and traditional epoxy glass cloth laminates.
Compared with other materials,Led PCB material has incomparable advantages. Suitable for SMT technology of power module surface mounting. Without radiator, the volume is greatly reduced, the heat dissipation effect is excellent, and the insulation and mechanical properties are good