Green Oil Electronic Double Sided Rigid PCB Board Customized Product Design

Double-sided carbon oil process

Double-sided PCB, also known as double-sided printed circuit board, is a printed circuit board (PCB) with two-sided circuit connections. In this kind of PCB, the electronic components and circuit layout can be arranged on both sides of the PCB respectively, and the electrical connection of the circuits on both sides is achieved through vias (Vias). This structure greatly increases the functional density of the circuit board, allowing it to implement more circuit connections in a relatively small area.

The main challenges in double-sided PCB manufacturing

1. Interlayer Alignment Precision

• Double-sided PCBs require precise alignment between the top and bottom layers to ensure the accuracy of via connections. Even minor misalignment can lead to open circuits or short circuits.
• The manufacturing process, including lamination and drilling, is highly sensitive to temperature and pressure changes, which can easily affect the alignment of the two layers.

2. Solder Mask Coating Uniformity

• Applying solder mask on both sides demands consistent thickness and coverage. Uneven coating may cause poor insulation or difficulty in soldering components later.
• The curing process for the solder mask on both sides needs strict parameter control; improper curing can lead to peeling or cracking of the mask layer.

3. Double-Sided Assembly Complexity

• During component mounting, the weight and heat of components on one side may affect the stability of the other side, increasing the risk of component displacement or solder joint failure.
• Testing for double-sided PCBs is more complex than for single-sided ones, as it requires verifying the functionality of both layers and the integrity of interlayer vias, which raises testing costs and difficulty.

Manufacturing process:

• Design and layout:Firstly, the PCB design is carried out through circuit design software, with wiring and component placement on both sides, and the position type of vias are planned at the same time.
• Drilling and electroplating: Drilling is carried out according to the design requirements, and electroplating is performed after drilling to form a via the circuits on both sides.
• Etching: Remove the excess copper foil to form the desired circuit pattern.
• Assembly and welding: After the components are installed, welding treatment is carried out, which can be done using surface-mount technology (SMT) or through technology (THT).

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Green Oil Electronic Double Sided Rigid PCB Board Customized Product Design Images