The difference between single -layer PCB and double -layer PCB board

If you are a PCB supply manufacturer, then you must know that PCB is divided into single layers, double layers and multi -layers. Large -scale PCB boards can reach more than 30 layers. Today, we mainly understand the difference between a single -layer PCB and double -layer PCB.

Single -layer PCB refers to a single -sided line board. The component is on one side and the wire is on the other side; the double -layer PCB can be cloth components and wiring on both sides. Because there is only one side of the single -to -beard, it is difficult to cross the cross, so the wiring is more difficult, and the double panel can be wiring on both sides. The wiring is difficult and it is more suitable for complex circuits. The production process of double panels is difficult to one -piece, mainly because the top layer and the bottom layer of the copper -covered plate must be connected and the wiring must be wiring.

 

The difference between single -layer PCB and double -layer PCB board

1. In terms of process: Single -layer PCB welding is concentrated on one side, and the other side is placed on the other side; both sides can be welded on both sides.

2. In terms of material: The single -layer PCB has copper foil only on one side, while the double -panels have copper foil willed on both sides, and the copper foil on both sides is connected through the perfunction.

3. In the production process:

1) Single -layer PCB production process:

Open → Drilling Positioning → Silk Printing Circuit → Eclipse → Silk Printing Text, CITC → Demonstration of Mold Cutting → Circuit Inspection Test → Packaging Shipment

2) The production process of dual -layer PCB:

Open → drilling → sinking copper → graphic transfer → graphic plating → etching → retreating tin → blocking → silk print → mold cutting shape → check test → packaging delivery

Although there are some differences between one -panel and double panels, their structures are the same, including pads, perforated, installation, plug -in, electronic components, wires, filling and electrical boundaries.

The working level is also the same. Whether it is a single -eyed or a double -panel, there are many types of working levels, such as signal layers, silk print layers, welded layers, tinycame layers, ground layers, etc. Generally, the circuit board has dozens of signal layers, which is used to put the signal -related components. The top layer is placed in components, the bottom layer is applied to copper, and the signal line is placed in the middle multi -layer. , Equipment model, company name, etc.; Welding layer is to prevent welds from flowing and prevent welds that do not need welded places, causing other components to be short -circuited. Welding; ground layer is to connect the copper film of the ground layer to the ground pins.

The cost of double -layer PCB is slightly higher than that of single -layer PCB, but they can Nana more circuit components in limited space content. Their wire layers are more than single -layer PCB, which can better isolate signals and power cords, thereby reducing interference and noise. Double -layer PCB usually uses copper -covered plates and copper film as a wire material, and covered with protective materials on both sides. The two -layer PCB components can be welded on both planes, so their component density can be higher and can achieve more complex circuit design. In short, the biggest difference between single -layer PCB and double -layer PCB is the number of wire layer and component welding. Their choice depends on actual needs and design requirements, and needs to choose suitable PCB types according to specific conditions.