Innovations in Rigid PCB Design and Fabrication

Rigid PCB (printed circuit board) is a key component in modern electronic equipment, the main advantage is its structural stability. Compared to flexible printed circuit boards, rigid PCBS are more physically stable, less prone to bending or twisting, and can accommodate more components and connections. Due to their rigid structure, rigid PCBS can support larger components and more complex circuit designs. This makes them useful in high-performance applications where large amounts of data and signals need to be processed, such as computers and communication equipment.

Electroless Nickel/Immersion Gold (ENIG) is a common surface treatment technique used in the manufacture of Rigid PCB. ENIG surface treatment involves electroplating a layer of nickel on the PCB surface and then plating a thin layer of gold. The nickel layer is mainly used to protect the PCB surface and prevent oxidation, while the gold layer provides good conductivity and weldability. The advantages of ENIG surface treatment include good weldability, long-term storage stability, and environmental resistance. Due to the presence of the gold layer, the ENIG treated PCB can provide stable welding performance, so that the components can be reliably welded to the PCB. The gold layer can also prevent the oxidation of the PCB during storage and improve the storage stability of the PCB. Finally, since both gold and nickel have good corrosion resistance, ENIG treated PCBS can maintain their performance under various environmental conditions.

Insulating materials play a vital role in Rigid PCBS, not only providing physical support for circuit components, but also preventing the unintended flow of current. The insulating material of rigid PCBS is usually made of materials such as fiberglass board (FR4) or paper-based phenolic resin board (FR2), which have good insulation properties and thermal stability and can maintain their performance under various environmental conditions. The choice of insulation material has a direct impact on the performance of rigid PCB, with excellent mechanical strength and thermal stability, suitable for applications requiring high frequency and high temperature environments. Paper-based phenolic resin boards have lower cost and good insulation properties, and are suitable for low cost and low power applications.

Immersion Silver is a common surface treatment technique used in the manufacture of Rigid PCB. Silver immersion surface treatment involves depositing a thin layer of silver on the PCB surface to provide good conductivity and weldability, environmental protection. The advantages of silver impregnated surface treatment are good weldability, low resistance and good electrical properties. Due to the presence of the silver layer, the silver impregnated PCB can provide stable welding performance, so that the components can be reliably welded to the PCB. The silver layer can also provide lower resistance, thereby improving the performance of the circuit.