Foshan foot sensor FPC flexible circuit board material

Now the high thermal conductivity is usually ceramic, copper, etc., but because considering the cost of doubt, most of the aluminum substrate on the market now, the corresponding thermal conductivity of aluminum substrate is the parameter we care about, the higher the thermal conductivity is one of the symbols of the better function.  Aluminum substrate is a common metal base copper-clad aluminum substrate, which has good thermal conductivity, electrical insulation and machining function.  The thermal conductivity of aluminum substrate usually has 1.0, 1.5, 2.0, the specific situation depends on the need for goods.  

The aluminum substrate of the flexible circuit board of the foot sensor is a metal copper-clad plate with good heat dissipation function. Generally, the single panel is composed of three layers, which are the circuit layer (copper foil), the insulation layer and the metal base.  Common in LED lighting products foot sensor FPC flexible circuit board.  There are positive and negative sides, the white side is welded LED pin, the other side is aluminum color, generally daub heat conduction paste and heat conduction part contact.  There are ceramic substrates and so on.  Advantages of aluminum substrate :1. More suitable for SMT process; 2.  3. The heat dissipation has been effectively dealt with, thus reducing the operating temperature of the module, prolonging the service life and improving the reliability.  Foot sensor FPC were reviewed at home and abroad in the future technology development trend of PCB manufacturing is basically consistent, namely to high density, high precision, small aperture, thin wire, fine pitch a foot sensor FPC flexible circuit boards, PCB in general is the copper base plate, it is divided into single-sided FPC flexible circuit board with double FPC flexible PCB board,  There are obvious differences in the materials used between the two. The main material of aluminum substrate is aluminum plate, while the main material of PCB board is copper.  Aluminum substrate because of its SPECIAL PP material.  Heat dissipation is better.  The price is also more expensive.  Both the comparison in terms of heat dissipation, aluminum plate in the cooling performance is more superior and PCB, its thermal performance is also different aluminum plate is a kind of PCB, aluminum plate price is more expensive, high reliability, multiple stratification, high-speed transmission, light weight, thin, on the production at the same time to improve productivity, reduce costs, reduce pollution,  Adapt to many varieties, small batch production direction development.  The technical development level of printed circuit is generally represented by the line width, aperture, and thickness/aperture ratio on the printed board.  

3. To begin welding all pins, add solder to the tip of the soldering iron and apply flux to all pins to keep them wet.  FPC The FPC touches the end of each pin of the chip with the tip of the soldering iron until the solder is seen flowing into pin 5.  Fill: Used for copper coating of ground wire network to reduce impedance.  6. 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 for (PrintedCircuitBoard) PCB, FPC flexible circuit board (FlexiblePrintedCircuitboard) [1] (FPC circuit board, also known as flexible PCB flexible circuit board based on polyimide or polyester film base material made of a kind of highly reliability,  Flexible printed circuit board.  During welding, the tip of the soldering iron should be kept parallel with the soldering pin to prevent the lap of the FPC flexible circuit board of the foot sensor due to excessive solder.  4. After soldering all the pins, wet them with flux to clean the solder.  Suck off excess solder where needed to eliminate any short circuits and lap joints.  Finally, use tweezers to check for soldering. When finished, remove flux from the circuit board, dip a bristles brush in alcohol and wipe it carefully in the direction of the pins until flux disappears.