PCB surface installation

　　1) Because the printed board has eliminated a large number of large -guided pores or buried holes interconnect technology, the wiring density on the printing board is increased, and the area of the printed board is reduced (generally one of the three -pointers for inserted installation), and at the same time It can also reduce the number of design layers and costs of the printed board.

　　2) Reduce weight and improve seismic performance, and adopts glue welded and new welding technology to improve product quality and reliability.

　　3) Due to the increased wiring density and shortening the length of the lead, the parasitic capacitance and parasitic inductance are reduced, which is more conducive to increasing the electrical parameter of the printed board.

　　4) It is easier to automate more than the installation installation, improves the installation speed and labor productivity, and reduces the assembly cost accordingly.

　　From the above surface safety technology, it can be seen that the improvement of circuit board technology is increased with the improvement of the packaging technology and surface installation technology of the chip. The surface adhesion rate of computer boards we are watching now is constantly rising. In fact, this kind of circuit board is re -used using the transmission network printing line graphics that cannot meet the technical requirements. Therefore, the ordinary high -precision line board, the line graphics and the welding graphics of the lines basically adopt the sensitivity line and the sensor green oil production process