Rigid PCB (Printed Circuit Board) is the most common type of circuit board in electronic devices.

　　Rigid PCBs are typically made from copper-clad laminates (CCL) as the substrate and processed through a series of techniques. It has high mechanical strength and stability, and can work reliably in various harsh environmental conditions.

　　One of the main characteristics of a rigid PCB is its fixed shape and size. Once completed, the rigid PCB will not easily deform, making it very suitable for installing various electronic components and conducting complex circuit layouts. At the same time, the mechanical strength of rigid PCBs also enables them to withstand certain external impacts and vibrations, ensuring the stability and reliability of electronic devices during use.

　　In terms of electrical performance, rigid PCBs perform well. It can provide good conductivity and insulation performance, ensuring stable transmission of circuit signals. In addition, rigid PCBs can achieve good electromagnetic compatibility and signal integrity by designing different wiring and grounding layers.

　　The manufacturing process of rigid PCBs is relatively mature and the cost is relatively low. It can adopt various processing methods, such as etching, drilling, electroplating, etc., to achieve complex circuit patterns and high-precision dimensional requirements. At the same time, the production efficiency of rigid PCBs is also high, which can meet the needs of large-scale production.

　　Rigid PCBs are widely used in various electronic devices, such as computers, communication equipment, consumer electronics, industrial control, etc. The performance requirements for rigid PCBs vary in different application fields. For example, in high-performance computers and communication devices, high-speed, high-density rigid PCBs are required; In some industrial control and automotive electronics fields, it is necessary to use rigid PCBs with higher reliability and resistance to harsh environments.

　　In short, rigid PCBs have become one of the most commonly used types of circuit boards in electronic devices due to their fixed shape, good mechanical strength, excellent electrical performance, and mature manufacturing processes. With the continuous development of electronic technology, rigid PCBs will also continue to innovate and improve to meet the growing demand for electronic devices.