Comparison of HDI high-precision and ordinary pca PCB circuit boards

Comparison of HDI high-precision and ordinary pca PCB circuit boards

PCB circuit board (printed circuit board), called printed circuit board in Chinese, or printed circuit board, occupies an important electronic component in the electronics industry. It is the electrical and signal connection and propagation carrier of electronic components. The support of the device. It is made by electronic printing, so it is called "printed" circuit board.

Due to the consistency of the printed board, it can avoid errors in manual wiring after electronic equipment adopts it, and can also ensure the quality of electronic equipment, because it can also realize the automatic assembly, placement, welding, and inspection of electronic components. This can reduce production costs, further increase labor productivity, and facilitate maintenance.

HDI (High Density Interconnector) is a high-precision PCB circuit board, which is a circuit board with a relatively high line distribution density. The high-precision (HDI) circuit board is represented by the inner and outer layers. The inner layer is patterned. After the blackening treatment, the prepreg is added according to the predetermined design to add layers, and then the copper foil is added to the back and the opposite sides for pressure bonding. Using drilling, metallization in the hole and other processes, the internal connections of the individual layers are realized. The more the number of laminations, the higher the technical grade of the panel. This is the lamination method used by HDI high-precision boards.

Ordinary PCB circuit boards generally adopt the traditionally developed laminating process. When the density of the PCB board increases beyond eight layers, it is manufactured with HDI high-precision boards, and the cost is lower than that. High-precision PCB boards are conducive to the use of technologically advanced industries and institutions, because their signal accuracy and electrical performance are higher than ordinary traditional PCB boards. In addition, the high-precision HDI board has an excellent improvement effect on electrostatic discharge, heat conduction, radio frequency interference and geomagnetic wave interference.