Led tower warning light pcb assembly
LED circuit board is the abbreviation of printed circuit board. Both LED aluminum substrate and fr-4 glass fiber circuit board belong to the same PCB. To say the difference, compare LED aluminum substrate and fr-4 glass fiber circuit board.
The main purpose of using aluminum substrate is that it has good heat dissipation. Since high-power LED has relatively high heat, most aluminum substrate is used in the production of LED lighting lamps.Fr-4 glass fiber circuit board is a traditional electronic circuit board, which is widely used due to its good insulation, corrosion resistance, compression resistance and multi-layer printing.
PCB PCBS (polychlorinated biphenyls) is North America in 1929 until the late 1929 s a business using a synthetic organic compounds, while Canada not the chemical processing production, but also has been widely used in electrical equipment insulation, heat exchangers, water systems and other special applications.
It took decades for the global environmental pollution of PCBS to be recognized. PCBS are mixtures of various chlorinated biphenyls, which are extremely harmful to human health.The Canadian government has taken steps to try to eliminate PCB, but the illegal import, processing and sale of PCB occurred in Canada in 1977, and the illegal release of PCB into the natural environment in 1985, and the Canadian constitution allows the owners of PCB equipment to continue using the PCB until the life of the equipment.It was only in 1988 that provincial governments began to regulate the storage, transport and destruction of PCBS.
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The product quality of LED aluminum substrate is mainly considered as the material model, hardness, surface and thickness of aluminum, and the suitable model size should be selected according to the product heat capacity.Fr-4 glass fiber circuit board is a relatively mature product. Most of the LED displays are fr-4 glass fiber circuit board.