Guangzhou lights FPC circuit board manufacturers wholesale

1.. Fill: Used for copper coating of ground wire network to reduce impedance. 2. Electrical boundary: used to determine the size of the circuit board, all components on the circuit board must not exceed this boundary. Circuit board names are: circuit board, PCB board, aluminum substrate, hf board, thick copper board, impedance board, PCB, ultra-thin circuit board, ultra-thin circuit board, printing (copper etching technology) circuit board and so on. The circuit board makes the circuit miniaturized and intuitive, which plays an important role in the batch production of fixed circuit and the optimization of electric appliance layout. Circuit boards may be called printed circuit boards or printed circuit boards, English name is (PrintedCircuitBoard) PCB, FPC PCB (FlexiblePrintedCircuitboard) [1] (FPC circuit board, also known as flexible PCB flexible circuit board is made of polyimide or polyester film as the backing material with a high reliability, Flexible printed circuit board. So far, there is no international standard for aluminum - based copper-clad plate. Our country by 704 factory is responsible for drafting the electronic industry military standard "flame retardant aluminum base copper clad laminate specification" car lamp FPC circuit board

1, the material of the product must be AL1060, must meet ROHS certification standards, must also be corrosion resistant. 2, the text and screen printing on the aluminum plate plate must be clear, the board must be clean and pollution-free. 3, the size of the thermal conductivity must meet the user's product performance requirements. 4, peeling strength (consistent with CCL IPC test method) 5, in accordance with the provisions of the product name specification version polarity mark and other words screen printing without error, no missing, no reprinting. The main technical requirements are: size requirements, including board size and deviation, thickness and deviation, verticality and warpage; Appearance, including cracks, scratches, burrs and delamination, aluminum oxide film requirements; Performance, including peel strength, surface resistivity, small breakdown voltage, dielectric constant, combustion and thermal resistance requirements. Headlights FPC PCB FPC PCB is also called the flexible circuit board, hereinafter referred to as "soft board, commonly known as FPC industry, is made of flexible insulating base material made of polyimide or polyester film (mainly) printed circuit board, has many advantages of rigid printed circuit board does not have such as it can free bending, coiling, fold, using light FPC circuit board

(1) Design of circuit schematic diagram -- the design of circuit schematic diagram is mainly to draw schematic diagram using ProtelDXP schematic editor. (2) generate reports - network statement that shows the links of all components in the circuit principle and relationship of the report, it is connected to circuit schematic design and circuit board design of bridge and link, through the network statements circuit schematic diagram, can quickly find the components, the relation between which provide convenience for the back of the PCB design. FPC can greatly reduce the size of electronic products, and meet the needs of electronic products to high-density, miniaturized, high reliability. Therefore, FPC has been widely used in aerospace, military, mobile communications, portable computers, computer peripherals, PDA, digital cameras and other fields or products.

The structure of FPC double layer soft board: when the circuit line is too complex, single layer board can not wire or need copper foil to ground shielding, you need to choose double layer board or even multi-layer board FPC circuit board aluminum PCB advantages: A. Heat dissipation is significantly better than that of standard FR-4 structures. B. The dielectric used is typically 5 to 10 times the thermal conductivity of conventional epoxy glass and 1/10 of the thickness. C. The heat transfer index is more efficient than traditional rigid PCBS. D. You can use copper weights lower than those shown on the IPC recommended chart. Application of aluminum substrate PCB :1. Audio equipment: input, output amplifier, balance amplifier, audio amplifier, preamplifier, power amplifier, etc. 2. Power supply equipment: switching voltage regulator, DC/AC converter, SW voltage regulator, etc. The most typical difference between laminates and single laminates is the addition of a perforation structure to connect the layers of copper foil. General substrate + transparent adhesive + copper foil the first processing process is to make holes. First in the base material and copper foil drilling, after cleaning coated with a certain thickness of copper, through the hole is ready. After that, the process is almost the same as the single-ply.