PCB manufacturing is divided into three categories

2019-11-07 23:23:32 聚鼎电路科技 327

Single-sided pcb board: In the most basic PCB design, the parts are concentrated on one side, and the wires are concentrated on the other side (when the chip component is on the same side as the wire, the plug-in device is on the other side). Since the wire only appears on one side, this PCB is called a single panel. Because single-panel has many strict restrictions on the design line, since there is only one side, the wiring can not cross and must follow the original path, so only the early circuit used this kind of board.

       Double-sided pcb board: This type of pcb board has wiring on both sides, but to use the two-sided wire, it is necessary to have proper circuit connection between the two sides. The "bridge" between such circuits is called a via. The via hole is a small hole filled or coated with metal on the PCB, which can be connected to the wires on both sides. The double-panel area is twice as large as the single-panel. The double-panel solves the difficulty of wiring interleaving in a single panel, and can be conducted through the hole to the other side. It is more suitable for circuits that are more complicated than single-panel.

        Multi-layer pcb board: In order to increase the area that can be wired, the multi-layer pcb board uses more single or double-sided wiring boards. Using a double-sided inner layer, two single-sided outer layers or two double-sided inner layers, and two single-sided outer layers of the PCB, through the positioning system and the insulating bonding material alternately and conductive patterns, The PCB board interconnected according to the design requirements becomes: four-layer board, six-layer board, also called multi-layer PCB circuit board.

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