The most difficult problem for LED manufacturers is LED heat dissipation problem, but we can use aluminum plates, because aluminum PCB owns the high thermal conductivity. Aluminum plate is a unique metal-based CCL, with good thermal conductivity, electrical insulation properties and machinability. We should try to be close to the aluminum base PCB design, reducing the thermal resistance potting segment generated.
The characteristics of the aluminum panel:
1. The surface mount technology (SMT);
2. In the circuit design of eucalyptus is extremely effective treatment for thermal diffusion;
3. Lower operating temperature, improve the power density and reliability, prolong the service life of products;
4. Reduce the size of our product, reduce the hardware cost and assembly;
5. Replace the brittle ceramic substrates, better mechanical endurance.
The structure of aluminum PCB board:
Aluminum base copper-clad r.p. panel is a kind of metal circuit board materials, consist of copper foil, thermal insulation layer and metal substrate, its structure in three layers:
Circuit Layer: equivalent to ordinary PCB copper clad, line thickness of copper foil l oz to 10 oz. Insulation Layer is a Layer of low thermal resistance thermal insulation materials. Thickness: 0.003 "to 0.006" inch is the core of the aluminum base copper clad meter technique, has the UL certification. Base Layer at the grass-roots level, is a metal substrate, typically aluminum or copper can be selected. Aluminum base copper-clad R.P. panel and traditional epoxy glass cloth laminated sheet, etc.
High performance aluminum plate using a thermal insulation layer is of such technology, it has very good thermal conductivity and high strength electrical insulation properties; metal substrate is aluminum plate support member, is required to have high thermal conductivity, typically aluminum can also be used copper (including copper can provide better thermal conductivity), suitable for drilling, punching and cutting other conventional machining. PCB material has advantages compared to other materials incomparable. SMT surface mount power components for public art. No radiator, much smaller, excellent heat dissipation, good insulation properties and mechanical properties.
The use of aluminum plate:
1. Audio equipment: input, output amplifier, balanced amplifiers, audio amplifiers, preamplifiers, power amplifiers, etc.
2. Power Supply: switching regulator(DC/AC converter,SW regulator and the like).
3. Communication electronic equipment: high-frequency amplifier circuit transmitters(filtering appliances).
4. Office automation equipment: motor drives.
5. Automotive: Electronic ignition regulator(power controller).
6. Computer: CPU board(floppy disk drive power devices).
7. Power Modules: Inverters(solid relay rectifier bridges).