- Dec 04, 2017 -
Process and material selection of LED aluminium PCB
The aluminium PCB is composed of the circuit layer eagle pcb(copper foil), thermal insulation layer and metal base layer. The circuit layer requires a large capacity of carrying capacity, therefore, thicker copper foil should be used, and the thickness is generally 35 mu m~280 mum. Thermal insulation layer is the core technology of aluminum PCB eagle pcb, It is usually made of special polymer filled with special ceramics. It has small thermal resistance, good viscoelasticity and has ability to resist heat aging and can withstand mechanical and thermal stress.The thermal insulation layer of high-performance aluminum PCB , such as IMS- H01, IMS-H02 and LED- 0601, is used in this technology.It has excellent thermal conductivity and high strength electrical insulation. The metal base layer is the supporting member of aluminum PCB eagle pcb, requiring high thermal conductivity, usually aluminum board, and copper board (which can provide better thermal conductivity), suitable for drilling, punching shear and cutting and other conventional mechanical processing. Process requirements include: gold plating, tin spray, osp antioxidant, sink gold, lead-free ROHS process, etc.
Features of base material and aluminum PCB eagle pcb: thin insulation layer, small thermal resistance; Nonmagnetic; Good heat dissipation; High mechanical strength product standard thickness: 0.8, 1.0, 1.2, 1.5, 2.0, 2.5, 3.0 mm copper foil thickness: 1.8 um um um um um 140 105 70 35 features: high heat dissipation, electromagnetic shielding, high mechanical strength, excellent processing performance. Purpose: LED special power mixing IC (HIC).
The aluminum PCB eagle pcb is the heat conduction of the LED and the device, the heat dissipation is mainly by the area, the heat conduction can choose the plate of high thermal conductivity, such as the American begs plate; Slow conduction or domestic general heat dissipation material. LED general use voltage is not very high, choose 1mil thickness insulation layer is more than 2000V.
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Xing Da Electric Technology Co.,Ltd