PCB Fabrication

Detailed analysis of the three major categories of PCB boards

by:A-TECH      2021-03-14
Single-Sided Boards On the most basic PCB boards, the parts are concentrated on one side, and the wires are concentrated on the other side (when there are chip components and the wires are on the same side, the plug-in device is on the other side). Because the wires only appear on one side, this kind of PCB is called a single-sided (Single-sided). Because single-sided boards have many strict restrictions on the design of the circuit (because there is only one side, the wiring cannot cross and must be around a separate path), only early circuits use this type of board. Double-Sided Boards (Double-Sided Boards) This type of circuit board has wiring on both sides, but to use two-sided wires, there must be a proper circuit connection between the two sides. The 'bridge' between such circuits is called a via. A via is a small hole filled or coated with metal on the PCB, which can be connected with the wires on both sides. Because the area of u200bu200bthe double-sided board is twice as large as that of the single-sided board, the double-sided board solves the difficulty of interlacing wiring in the single-sided board (it can be conducted to the other side through the hole), and it is more suitable for use in more complicated circuits than the single-sided board. Multi-Layer Boards In order to increase the area that can be wired, multi-layer boards use more single or double-sided wiring boards. Use one double-sided as the inner layer, two single-sided as the outer layer or two double-sided as the inner layer and two single-sided as the outer layer of the printed circuit board. The positioning system and the insulating bonding material alternately together and the conductive pattern Printed circuit boards that are interconnected according to design requirements become four-layer and six-layer printed circuit boards, also known as multilayer printed circuit boards.
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