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Double-sided circuit boards are mainly designed to solve the complex design of the circuit and the area of the board, both sides of the board are installed components, double or multi-layer alignment.
As for the application of which areas, as long as there are circuit board electrical appliances can be used, but because the single and double panels, single and multi-storey cost is different, Double PCB the more the surface and the higher the cost of the layer. So the designer will generally meet the requirements of the assembly, at the lowest cost.
Sided circuit board is a very important board in the PCB board, the market has double-sided circuit board metal base PCB board, Hi-Tg copper foil circuit board, flat winding double-sided circuit boards, high frequency PCB, hybrid dielectric base high-frequency double-sided circuit boards, it applies to a wide range of high-tech industries such as: telecommunications, power supply, computer, industrial control, digital products, Double PCB science and education equipment, medical equipment, automotive, aerospace defense.
Production method of double - sided circuit board.
Double-sided circuit boards are usually made of epoxy glass cloth with copper foil. It is mainly used for higher performance requirements of communications electronic equipment, Double PCB advanced instrumentation and electronic computers. Double-sided PCB circuit board production process is generally divided into process wire method, plugging method, masking method and a number of graphic plating an etching method.
Single, double-sided PCB circuit board production distinction.
Single-sided circuit board production process: drilling - silk screen line - electroplating etching - silk screen printing - silk screen text - spray tin - gong side - complete
Sided circuit board production process: drilling - electroplating copper - a copper - silk screen - electric two copper - etching - silk screen resistance welding - text - spray tin - gong side - to complete.
Duplex PCB board wiring considerations.
Wiring is the production of double-sided PCB circuit board an important part of the following look at the double-sided PCB circuit board what are the precautions.
1, the length of the trace as short as possible in order to minimize the lead inductance. Double PCB In the low-frequency circuit, because the circuit current flowing through the common ground impedance or ground plane, so to avoid the use of multi-point grounding.
2, the public ground should be arranged in the printed circuit board edge part. The circuit board should be as much as possible to retain the copper foil to do ground, can enhance the shielding capacity.
3, double board can use the ground plane, the purpose of the ground plane is to provide a low impedance ground.
4, multi-layer printed circuit board, Double PCB you can set the ground layer, ground layer designed to mesh. The spacing of the ground grid can not be too large, because one of the main functions of the ground is to provide a signal return path. If the grid spacing is too large, a larger signal loop area will be formed. The large loop area can cause radiation and sensitivity problems. In addition, the signal return to the actual loop area of small path, the other ground does not work.
5, the ground surface can make the radiation loop is small.
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